Transient infrared laser exposure modulates calcium activity in cortical dendritic spines.
The 8 matches
- [1] § Results › Anatomical Variation in Calcium Response ↔ SpineGCaMPAnalysis.m, lines 89–229 · score 0.70 · unreactive soma, DS responding, Cohen, rank, ANOVA, phenotype
- [2] § Methods › Infrared Laser Exposure ↔ SpineGCaMPAnalysis.m, lines 515–548 · score 0.68 · pulse energy, pulse train, single pulse, SP, PT, temperatures
- [3] § Methods › Data Analysis › Signal feature extraction ↔ ExtendedImagingAnalysis.m, lines 60–140 · score 0.66 · low activity, high activity, mCardinal, fluorescence, spiking, actin
- [4] § Methods › Microscopy › Confocal imaging ↔ ExtendedImagingAnalysis.m, lines 60–140 · score 0.61 · low activity, high activity, mCardinal, sham, actin, Bonferroni
- [5] § Results › Anatomical Variation in Calcium Response ↔ SpineGCaMPAnalysis.m, lines 89–229 · score 0.57 · Reactive neurons, rank, SEM, unreactive, phenotypes, SPME
- [6] § Methods › Data Analysis › Image processing and signal measurement ↔ ActinDataExtraction.m, lines 1–111 · score 0.57 · affine, imregtform, imwarp, transform, Multimodal, segmentation
- [7] § Results › Concurrent Calcium and F-Actin Dynamics ↔ ExtendedImagingAnalysis.m, lines 199–267 · score 0.55 · individual neuron, mCardinal, reaction, Spearman, correlation, alpha
- [8] § Results › Infrared-Induced Calcium Activity Mediated Through Extracellular Entry ↔ SpineGCaMPAnalysis.m, lines 455–513 · score 0.53 · CaFree, AP5, CNQX, TRP, RR, Kruskal
Paper
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The authors' code
MATLAB · 705 lines · 28 KB · no license · 4 matches
- clc, clear, close all
- % Load Data
- load("Phys Temp.mat"), PhysTemp = ExpData;
- load("Room Temp.mat"), RoomTemp = ExpData.PulseTrain;
- RoomTemp = rmfield(RoomTemp,'Post');
- load("Pharmacology.mat"), Pharma = ExpData.PulseTrain;
- Pharma = rmfield(Pharma,'Post');
- clear ExpData
- DoseType = {'Single', 'Multi'};
- artifactpts = 31:5:51;
- Colors = [0 0 0;
- .5 .5 0;
- 0 .5 0;];
- yellow_lut = [linspace(0,1,256)', linspace(0,1,256)',zeros(256,1)];
- % Separate Room Temp experiments into experimental categories
- mask = contains({RoomTemp.Single.filename},'30A');
- RoomTemp.Subthreshold.Single = RoomTemp.Single(mask);
- RoomTemp.Subthreshold.Multi = RoomTemp.Multi(mask);
- RoomTemp.Threshold.Single = RoomTemp.Single(~mask);
- RoomTemp.Threshold.Multi = RoomTemp.Multi(~mask);
- % Good ol Peak counting. This is the way. [labels,locs height,prom,width]
- % Soma = [loction, height, prominance, width ]
- % Dendrites = [DendriteLabel, loction, height, prominance, width, bAP]
- % Spines = [SpineLabel, ParentDendrite, loction, height, prominance, width, bAP, Reactive, NeuronParent]
- PhysTemp.PulseTrain.Single = ExtractPks(PhysTemp.PulseTrain.Single,752,artifactpts(1));
- PhysTemp.PulseTrain.Multi = ExtractPks(PhysTemp.PulseTrain.Multi,900,artifactpts);
- PhysTemp.SinglePulse.Single = ExtractPks(PhysTemp.SinglePulse.Single,752,artifactpts(1));
- PhysTemp.SinglePulse.Multi = ExtractPks(PhysTemp.SinglePulse.Multi,900,artifactpts);
- RoomTemp.Subthreshold.Single = ExtractPks(RoomTemp.Subthreshold.Single,752,artifactpts(1));
- RoomTemp.Subthreshold.Multi = ExtractPks(RoomTemp.Subthreshold.Multi,900,artifactpts);
- RoomTemp.Threshold.Single = ExtractPks(RoomTemp.Threshold.Single,752,artifactpts(1));
- RoomTemp.Threshold.Multi = ExtractPks(RoomTemp.Threshold.Multi,900,artifactpts);
- Pharma.Single = ExtractPks(Pharma.Single,752,artifactpts(1));
- Pharma.Multi = ExtractPks(Pharma.Multi,899,artifactpts);
- % Append Data
- PhysTemp.PulseTrain = AppendData(PhysTemp.PulseTrain);clc
- PhysTemp.SinglePulse = AppendData(PhysTemp.SinglePulse);
- RoomTemp.Subthreshold = AppendData(RoomTemp.Subthreshold);
- RoomTemp.Threshold = AppendData(RoomTemp.Threshold);
- % Peak Stats
- PhysTemp.PulseTrain.SpinePkStats = SpinePeakStats(PhysTemp.PulseTrain);
- PhysTemp.SinglePulse.SpinePkStats = SpinePeakStats(PhysTemp.SinglePulse);
- RoomTemp.Subthreshold.SpinePkStats = SpinePeakStats(RoomTemp.Subthreshold);
- RoomTemp.Threshold.SpinePkStats = SpinePeakStats(RoomTemp.Threshold);
- Pharma.SpinepkStats = SpinePeakStats(Pharma);
- %% Panel 3A
- close all
- ExpTyp = PhysTemp.SinglePulse.Single;
- neuron = 4;
- figure('Theme','light');
- subplot(8,1,1:5),
- spines = RemoveDC(ExpTyp(neuron).Spines,200);
- t = (1:length(spines))/7.5;
- imagesc(spines'), colormap("hot"),
- axpos = get(gca,"Position");
- c =colorbar; c.Label.String = '\DeltaF/F'; c.Location = 'manual';
- c.Position = [axpos(1)+axpos(3)+.01 axpos(2) .02 axpos(4)];
- xline(30*7.5,'LineWidth',2,LineStyle="--",Alpha=1,Color='w')
- set(gca, 'XTick', [], 'YTick', [],'FontSize',24)
- ylabel('Denditic Spines')
- subplot(8,1,6)
- mask = ~ExpTyp(neuron).SpinePks(:,end-2);
- xline(ExpTyp(neuron).SpinePks(mask,3),'Color','r','LineWidth',2,Alpha=1 );
- xline(ExpTyp(neuron).SomaPks(:,1),'LineWidth',2,Alpha=1 );
- xlim([t(1) t(end)]), xline(30,'LineWidth',2,LineStyle="--",Alpha=1 )
- set(gca, 'XTick', [], 'YTick', [])
- subplot(8,1,7:8)
- soma = RemoveDC(ExpTyp(neuron).Soma,200);
- plot(t,soma,'Color','k','LineWidth',2),
- xlim([t(1) t(end)]), xline(30,'LineWidth',2,LineStyle="--",Alpha=1 )
- set(gca, 'FontSize',24)
- ylabel('\DeltaF/F'), xlabel('time (sec)')
- %% Figure 3 comparing Soma, and Spine Responses
- close all
- SomaLabels = []; SomaMean =[]; SomaPhenotype= []; SpineLabels =[];
- SpineMean =[]; SpinePhenotype= []; SpikePercentage = [];
- duration = 75;
- % Mean Plot responses
- for i = 1:4
- if i ==1, PulseType = PhysTemp.PulseTrain; ExposureType = PulseType.SingleAppened;
- stimpt = round(30*7.5); thresh = stimpt+duration;
- ReactiveFraction = PulseType.SpinePkStats.SingleRespondingFraction(:,2);
- elseif i ==2, PulseType = PhysTemp.SinglePulse; ExposureType = PulseType.SingleAppened;
- ReactiveFraction = PulseType.SpinePkStats.SingleRespondingFraction(:,2);
- elseif i ==3, PulseType = PhysTemp.PulseTrain; ExposureType = PulseType.MultiAppened;
- stimpt = round(50*7.5); thresh = stimpt+duration;
- ReactiveFraction = PulseType.SpinePkStats.MultiRespondingFraction(:,2);
- else, PulseType = PhysTemp.SinglePulse; ExposureType = PulseType.MultiAppened;
- ReactiveFraction = PulseType.SpinePkStats.MultiRespondingFraction(:,2);
- end
- soma = RemoveDC(ExposureType.Soma,225);
- spines = RemoveDC(ExposureType.Spines,225);
- SomaMean = [SomaMean; mean(soma(stimpt:thresh,:))'];
- SpineMean = [SpineMean; mean(spines(stimpt:thresh,:))'];
- mask = median(sum(soma(stimpt:thresh,:))')<sum(soma(stimpt:thresh,:))'; % Reactive neurons are above the median of the AUC
- SomaLabels = [SomaLabels; ones(size(mask))*i];
- SomaPhenotype = logical([SomaPhenotype; mask]);
- SpikePercentage = [SpikePercentage; ReactiveFraction];
- pv = ranksum(ReactiveFraction(mask),ReactiveFraction(~mask));
- % Panel C
- mask = (PulseType.Labels.Structure=='Spine') & ismember(PulseType.Labels.NeuronID,find(mask));
- temp = (PulseType.Labels.Structure=='Soma') | (PulseType.Labels.Structure=='Dendrite');
- mask(temp) = [];
- SpineLabels = [SpineLabels; ones(size(mask))*i];
- SpinePhenotype = logical([SpinePhenotype; mask]);
- end
- % 3B
- Labels = SomaLabels+SomaPhenotype*4;
- TickLabels = {'PTSE_(_-_)' 'SPSE_(_-_)' 'PTME_(_-_)' 'SPME_(_-_)'...
- 'PTSE_(_+_)' 'SPSE_(_+_)' 'PTME_(_+_)' 'SPME_(_+_)'};
- Colors = [repmat([.5 .5 .5],[4 1]); repmat([1 .5 .5],[4 1])];
- f1 = figure(Theme='light');
- boxchart(Labels, SomaMean,'GroupByColor',Labels,'ColorGroupLayout',...
- 'overlaid', 'BoxEdgeColor','k','MarkerSize',10, 'MarkerStyle',...
- '.','MarkerColor','k','BoxFaceAlpha', 1);
- ax = gca; ax.FontSize = 24; ax.TickDir = 'none';
- colororder(Colors), ylabel('\DeltaF/F'),
- set(gca, 'XTick', 1:max(Labels), 'XTickLabels', TickLabels)
- ax = gca; ax.FontSize = 24; ax.TickDir = 'none'; theme('light')
- % Anderson-Darling normality test
- for i = 1:max(Labels)
- data = SomaMean(Labels==i);
- isnormal(i) = adtest(data);
- end, isnormal
- % P Vals and heat map
- dFSoma = PairwiseTest(SomaMean,Labels,TickLabels,'rank');
- mask = dFSoma.P_Value<0.05;
- figure(f1), hold on
- sigstar(dFSoma.Pairs(mask), dFSoma.P_Value(mask)); hold off;
- legend('Reactive Soma', 'Unreactive Soma')
- for i = 5:8
- mask = Labels==i;
- M = mean(SomaMean(mask))*100;
- sem = std(SomaMean(mask))/sqrt(sum(mask))*100;
- sprintf('%s: %.2f+/-%.2f', TickLabels{i}, M, sem)
- end
- % Panel 3C
- Labels = SpineLabels+SpinePhenotype*4;
- figure('Theme','light');
- swarmchart(SpineLabels(~SpinePhenotype),SpineMean(~SpinePhenotype),5,'black','filled'), hold on
- swarmchart(SpineLabels(SpinePhenotype),SpineMean(SpinePhenotype),5,'red','filled'), hold off
- set(gca, 'XTick', 1:4, 'XTickLabels', {'PTSE' 'SPSE' 'PTME' 'SPME'})
- ylabel("\DeltaF/F")
- ax = gca; ax.FontSize = 30; ax.TickDir = 'none';
- legend('Unreactive (-)','Reactive (+)',"Location", "northwest",...
- "Color",'none','EdgeColor','none');
- % Kolmgrov-smirnov normality test & effect size
- for i = 1:max(SpineLabels)
- spines = SpineLabels==i;
- isnormal(i) = kstest(SpineMean(spines));
- x = spines & SpinePhenotype;
- x = SpineMean(x);
- y = spines & ~SpinePhenotype;
- y = SpineMean(y);
- meanEffectSize(x,y,"Effect","cohen")
- d(i,1) = ans.Effect;
- CI = abs(ans.ConfidenceIntervals-ans.Effect);
- d(i,2) = mean(CI);
- end, isnormal
- [~,~,stats] =anova1(SpineMean,Labels,"off");
- c = multcompare(stats,'Display','off','CriticalValueType','bonferroni');
- pvVal = orderpvalues(c);
- plotheatmap(TickLabels, pvVal);
- title('ANOVA P-Values')
- dFSpines = PairwiseTest(SpineMean,Labels,TickLabels,'ttest');
- for i = 5:8
- mask = Labels==i;
- M = mean(SpineMean(mask))*100;
- sem = std(SpineMean(mask))/sqrt(sum(mask))*100;
- sprintf('%s: %.2f+/-%.2f', TickLabels{i}, M, sem)
- end
- % 3D Spiking activity striated by soma phenotype
- close all
- f1 = figure(Theme='light');
- Labels = SomaLabels+SomaPhenotype*4;
- boxchart(Labels, SpikePercentage*100,'GroupByColor',Labels,'ColorGroupLayout',...
- 'overlaid', 'BoxEdgeColor','k','MarkerSize',10, 'MarkerStyle',...
- '.','MarkerColor','k','BoxFaceAlpha', .5),
- colororder(Colors), ylabel('% DS Responding/Neuron'), ylim([0 100])
- set(gca, 'XTick', 1:max(Labels), 'XTickLabels', TickLabels,'FontSize',24)
- PhenoSpike = PairwiseTest(SpikePercentage,Labels,TickLabels,'rank');
- % Anderson-Darling normality test
- for i = 1:max(Labels)
- data = SpikePercentage(Labels==i);
- isnormal(i) = adtest(data);
- end, isnormal
- mask = PhenoSpike.P_Value<0.05;
- figure(f1), hold on
- sigstar(PhenoSpike.Pairs(mask), PhenoSpike.P_Value(mask)); hold off; % Add significance markers
- %% Figure 4
- close all
- % 4B Distances from Soma for each experimental protocol
- Distances = horzcat([PhysTemp.PulseTrain.Single.SpineDistance],...
- [PhysTemp.PulseTrain.Multi.SpineDistance],...
- [PhysTemp.SinglePulse.Single.SpineDistance],...
- [PhysTemp.SinglePulse.Multi.SpineDistance]);
- % Labels for all Spines
- Labels = horzcat(ones(1,length([PhysTemp.PulseTrain.Single.SpineEventMask])),...
- ones(1,length([PhysTemp.PulseTrain.Multi.SpineEventMask]))*2,...
- ones(1,length([PhysTemp.SinglePulse.Single.SpineEventMask]))*3,...
- ones(1,length([PhysTemp.SinglePulse.Multi.SpineEventMask]))*4);
- % Mask of activated spines
- mask = logical(horzcat([PhysTemp.PulseTrain.Single.SpineEventMask],...
- [PhysTemp.PulseTrain.Multi.SpineEventMask],...
- [PhysTemp.SinglePulse.Single.SpineEventMask],...
- [PhysTemp.SinglePulse.Multi.SpineEventMask]));
- figure('Theme','light');
- set(gcf, 'Units', 'inches', 'Position', [5, 5, 5.5, 4]);
- swarmchart(Labels(~mask),Distances(~mask),10,'black','filled'), hold on
- swarmchart(Labels(mask),Distances(mask)',10,'red','filled'), hold off
- set(gca, 'XTick', 1:4, 'XTickLabels', {'PTSE' 'PTME' 'SPSE' 'SPME'})
- ylabel("Distance (\mum)")
- legend('Unreactive','Reactive',"Location", "northwest",...
- "Color",'none','EdgeColor','none');
- ax = gca; ax.FontSize = 24; ax.TickDir = 'none';
- for i = 1:4
- imask = Labels == i;
- [r(i)] = corr(Distances(imask)', mask(imask)', 'Type', 'Pearson');
- end
- Labels = Labels+mask*4;
- TickLabels = {'PTSE (-)' 'PTME (-)' 'SPSE (-)' 'SPME (-)'...
- 'PTSE (+)' 'PTME (+)' 'SPSE (+)' 'SPME (+)'};
- [~,~,stats] = anova1(Distances, Labels,"off");
- c = multcompare(stats,'Display','off');
- p = orderpvalues(c);
- plotheatmap(TickLabels, p)
- title('ANOVA Bonferroni Post-Hoc P-Values')
- % Figure 4 C & D
- PTSS = PhysTemp.PulseTrain.SpinePkStats.Post_Single;
- PTMS = PhysTemp.PulseTrain.SpinePkStats.Post_Multi;
- SPSS = PhysTemp.SinglePulse.SpinePkStats.Post_Single;
- SPMS = PhysTemp.SinglePulse.SpinePkStats.Post_Multi;
- PkStats = vertcat(PTSS, PTMS, SPSS, SPMS);
- Labels = [ones(length(PTSS),1); ones(length(PTMS),1)*2; ...
- ones(length(SPSS),1)*3; ones(length(SPMS),1)*4];
- IRPks = horzcat(PkStats, Labels);
- PTSS = PhysTemp.PulseTrain.SpinePkStats.Single_bAP;
- PTMS = PhysTemp.PulseTrain.SpinePkStats.Multi_bAP;
- SPSS = PhysTemp.SinglePulse.SpinePkStats.Single_bAP;
- SPMS = PhysTemp.SinglePulse.SpinePkStats.Multi_bAP;
- PkStats = vertcat(PTSS, PTMS, SPSS, SPMS);
- Labels = [ones(length(PTSS),1); ones(length(PTMS),1)*2; ...
- ones(length(SPSS),1)*3; ones(length(SPMS),1)*4];
- bAPPks = horzcat(PkStats, Labels);
- mask = bAPPks(:,3)>30 & bAPPks(:,7)==1;
- post_bAPPks = bAPPks(mask,:);
- pre_bAPPks = bAPPks(~mask,:);
- figure('Theme','light'); set(gcf, 'Units', 'inches', 'Position', [5, 5, 5.5, 4]);
- swarmchart(IRPks(:,end),IRPks(:,4),5,'red','filled'), hold on
- swarmchart(post_bAPPks(:,end),post_bAPPks(:,4),5,'black','filled'), hold off
- set(gca, 'XTick', 1:4, 'XTickLabels', {'PTSE' 'PTME' 'SPSE' 'SPME'})
- ylabel("\DeltaF/F (A.U.)")
- ax = gca; ax.FontSize = 24; ax.TickDir = 'none';
- legend('ICS','bAP',"Location", "best",...
- "Color",'none','EdgeColor','none');
- TickLabels = {'PTSE bAP' 'PTME bAP' 'SPSE bAP' 'SPME bAP'...
- 'PTSE ICS' 'PTME ICS' 'SPSE ICS' 'SPME ICS'};
- Data = [post_bAPPks(:,4); IRPks(:,4)];
- Labels = [post_bAPPks(:,end); IRPks(:,end)+4];
- for i = 1:max(Labels)
- neurons = Labels==i;
- tempstruct(i) = datastatsJake(Data(neurons));
- isnormal(i) = jbtest(Data(neurons));
- end, dFstats = struct2table(tempstruct); clear tempstruct
- dFstats.Labels = TickLabels'; isnormal
- [~,~,stats] = anova1(Data, Labels,"off");
- c = multcompare(stats,'CriticalValueType','bonferroni','Display','off');
- p = orderpvalues(c);
- plotheatmap(TickLabels, p);
- title('Kruskal-Wallis P-Values')
- disp(dFstats)
- figure('Theme','light'); set(gcf, 'Units', 'inches', 'Position', [5, 5, 5.5, 4]);
- swarmchart(IRPks(:,end),IRPks(:,5),5,'red','filled'), hold on
- swarmchart(post_bAPPks(:,end),post_bAPPks(:,5),5,'black','filled'), hold off
- set(gca, 'XTick', 1:4, 'XTickLabels', {'PTSE' 'PTME' 'SPSE' 'SPME'})
- ylabel("FWHM (Sec)")
- legend('ICS','bAP',"Location", "best",...
- "Color",'none','EdgeColor','none');
- ax = gca; ax.FontSize = 24; ax.TickDir = 'none';
- Data = [post_bAPPks(:,5); IRPks(:,5)];
- Labels = [post_bAPPks(:,end); IRPks(:,end)+4];
- for i = 1:max(Labels)
- neurons = Labels==i;
- tempstruct(i) = datastatsJake(Data(neurons));
- isnormal(i) = jbtest(Data(neurons));
- end, FWHMstats = struct2table(tempstruct); clear tempstruct
- FWHMstats.Labels = TickLabels'; isnormal
- [~,~,stats] = anova1(Data, Labels,"off");
- c = multcompare(stats,'CriticalValueType','bonferroni','Display','off');
- p = orderpvalues(c);
- plotheatmap(TickLabels, p);
- disp(FWHMstats)
- % Figure 4E
- PkCount = horzcat(PhysTemp.PulseTrain.SpinePkStats.SingleRespondingFraction,...
- PhysTemp.PulseTrain.SpinePkStats.MultiRespondingFraction,...
- PhysTemp.SinglePulse.SpinePkStats.SingleRespondingFraction,...
- PhysTemp.SinglePulse.SpinePkStats.MultiRespondingFraction);
- PkCount(:,[3 7]) = [];
- [j,k] = size(PkCount);
- PTPkCount = reshape(PkCount, [j*k 1])*100;
- PTLabels = reshape(repmat(1:k,[j 1]), size(PTPkCount));
- PTLabels(PTLabels==4) = 1; PTLabels(PTLabels==5) = 4; PTLabels(PTLabels==6) = 5;
- Colors = [0.5, 0.5, 0.5; % Gray
- 1, 0, 0; % Bright Red
- 0.8, 0, 0; % Darker Red
- 1, 0.6, 0; % Light Orange
- 0.8, 0.4, 0;]; % Darker Orange
- figure('Theme','light'); set(gcf, 'Units', 'inches', 'Position', [1, 1, 7, 6]);
- boxchart(PTLabels, PTPkCount,'GroupByColor',PTLabels,'ColorGroupLayout',...
- 'overlaid', 'BoxEdgeColor','k','MarkerSize',10, 'MarkerStyle',...
- '.','MarkerColor','k','BoxFaceAlpha', 1)
- %violinplot(PTLabels, PTPkCount,'GroupByColor',PTLabels,'ColorGroupLayout',...
- % 'overlaid','FaceAlpha', 1,'EdgeColor','k','DensityScale','count')
- colororder(Colors)
- %b = gbar(PkCount, Labels)
- ylabel("% DS Responding/Neuron"), ylim([0 100]), xlim([0.5 max(PTLabels)+0.5])
- set(gca, 'XTick', 1:5, 'XTickLabels', {'Pre Stim' 'PTSE_3_0' 'PTME_3_0' 'SPSE_3_0' 'SPME_3_0'})
- ax = gca; ax.FontSize = 24; ax.TickDir = 'none';
- [~,~,stats] = kruskalwallis(PTPkCount, PTLabels,'off');
- c = multcompare(stats,'Display','off',CriticalValueType='dunn-sidak');
- pairs = num2cell(c(:, 1:2),2); mask = c(:,6)<0.05;
- sigstar(pairs(mask), c(mask,6)); hold off; % Add significance markers
- p = orderpvalues(c);
- plotheatmap({'Pre Stim' 'PTSE' 'PTME' 'SPSE' 'SPME'}, p);
- title('Kruskal-Wallis P-Values')
- for i = 1:max(PTLabels)
- neurons = PTLabels==i;
- tempstruct(i) = datastatsJake(PTPkCount(neurons));
- isnormal(i) = adtest(PTPkCount(neurons));
- end, RespFraction = struct2table(tempstruct); clear tempstruct
- isnormal
- RespFraction.Labels = {'Pre Stim' 'PTSE' 'PTME' 'SPSE' 'SPME'}';
- disp(RespFraction)
- % Figure 4F Room Temperature Data
- PkCount = horzcat(RoomTemp.Subthreshold.SpinePkStats.SingleRespondingFraction,...
- RoomTemp.Subthreshold.SpinePkStats.MultiRespondingFraction,...
- RoomTemp.Threshold.SpinePkStats.SingleRespondingFraction,...
- RoomTemp.Threshold.SpinePkStats.MultiRespondingFraction);
- PkCount(:,[3, 5, 7]) = []; % pre exposure indexes for later time points
- [j,k] = size(PkCount);
- RTPkCount = reshape(PkCount, [j*k 1])*100;
- RTLabels = reshape(repmat(1:k,[j 1]), size(RTPkCount));
- titles = {'Pre Stim' 'PTSE_S_u_b' 'PTME_S_u_b' 'SPSE_T_h_r_e_s_h' 'SPME_T_h_r_e_s_h'};
- Colors = [0.5, 0.5, 0.5; % Gray
- 1, 0, 0; % Bright Red
- 0.8, 0, 0; % Darker Red
- 0.5, 0.8, 1;
- .1, .3, 1;];
- figure('Theme','light'); set(gcf, 'Units', 'inches', 'Position', [1, 1, 7, 6]);
- boxchart(RTLabels, RTPkCount,'GroupByColor',RTLabels,'ColorGroupLayout',...
- 'overlaid', 'BoxEdgeColor','k','MarkerSize',10, 'MarkerStyle',...
- '.','MarkerColor','k','BoxFaceAlpha', 1)
- colororder(Colors)
- ylabel("% DS Responding/Neuron"), ylim([0 100])
- set(gca, 'XTick', 1:5, 'XTickLabels',titles)
- ax = gca; ax.FontSize = 24; ax.TickDir = 'none';
- [~,~,stats] = kruskalwallis(RTPkCount, RTLabels,'off');
- c = multcompare(stats,'Display','off',CriticalValueType='dunn-sidak');
- pairs = num2cell(c(:, 1:2),2); mask = c(:,6)<0.05;
- sigstar(pairs(mask), c(mask,6)); hold off; % Add significance markers
- p = orderpvalues(c);
- plotheatmap(titles, p)
- title('Kruskal-Wallis P-Values')
- for i = 1:max(PTLabels)
- neurons = PTLabels==i;
- tempstruct(i) = datastatsJake(RTPkCount(neurons));
- isnormal(i) = adtest(RTPkCount(neurons));
- end, RTRespFraction = struct2table(tempstruct); clear tempstruct
- RTRespFraction.Labels = titles';
- disp(RTRespFraction), isnormal
- %% Figure 6 Physiological Mechanism
- close all
- PharmaGroups ={'Control','CaFree','AP5', 'CNQX', 'RR','Gd','TRP'};
- CountLabels = []; PkCount = []; spines = Pharma.Multi;
- Locs = []; LocLabels = [];
- Colors = orderedcolors("gem");
- Colors([2, 5], :) = Colors([5, 2], :);
- ex = [3 1 1 1 1 1 1 1 1];
- for i = 1:length(PharmaGroups)
- mask = contains({Pharma.Multi.filename},PharmaGroups{i});
- temp = spines(mask);
- TempLocs = vertcat(temp.SpinePks);
- TempLocs = TempLocs(~TempLocs(:,6),3); % Time of firing that is not an AP
- Locs = [Locs; TempLocs(TempLocs>30)];
- LocLabels = [LocLabels; ones(numel(TempLocs(TempLocs>30)),1)*i];
- PkCount = [PkCount; Pharma.SpinepkStats.MultiRespondingFraction(mask,2)*100];
- CountLabels = [CountLabels; ones(sum(mask),1)*i];
- figure('Theme','light'); set(gcf, 'Units', 'inches', 'Position', [1, 1, 6, 2]);
- histogram(TempLocs,24,'Normalization','countdensity',...
- 'FaceColor', Colors(i,:), 'FaceAlpha', 1), %hold on
- ylim([0 15]), xlim([0 120]),
- xlabel('Time (sec)'), ylabel('Counts/5 Sec')
- xline(artifactpts-1)
- set(gca, "FontSize", 20)
- legend(PharmaGroups{i},"Location", "best",...
- "Color",'none','EdgeColor','none');
- end
- for i = 1:max(CountLabels)
- neurons = CountLabels==i;
- tempstruct(i) = datastatsJake(PkCount(neurons));
- isnormal(i) = adtest(PkCount(neurons));
- end, PRespFraction = struct2table(tempstruct); clear tempstruct
- PRespFraction.Labels = PharmaGroups';
- disp(PRespFraction),
- figure('Theme','light');
- set(gcf, 'Units', 'inches', 'Position', [1, 1, 7, 6]);
- boxchart(CountLabels, PkCount,'GroupByColor',CountLabels,'ColorGroupLayout','overlaid', ...
- 'BoxEdgeColor','k','MarkerSize',10, 'MarkerStyle',...
- '.','MarkerColor','k','BoxFaceAlpha', 1)
- colororder(Colors)
- ylabel("% DS Responding/Neuron"), ylim([0 119])
- set(gca, 'XTick', 1:i, 'XTickLabels',PharmaGroups)
- set(gca, 'YTick', 0:20:100)%, 'XTickLabels',PharmaGroups)
- ax = gca; ax.FontSize = 24; ax.TickDir = 'none';
- [~,~,stats] = kruskalwallis(PkCount, CountLabels,'off');
- c = multcompare(stats,'Display','off',CriticalValueType='bonferroni');
- pairs = num2cell(c(:, 1:2),2); mask = c(:,end)<0.05;
- sigstar(pairs(mask), c(mask,6)); hold off; % Add significance markers
- p = orderpvalues(c);
- plotheatmap(PharmaGroups, p);
- %% Energy Calculations
- [Area,~] = SpotSizeCalc(0.22,1.33,1.33,400,200,0);
- PTAmps = [ 28 28 30 28 27 28 28 28 28 27.5 30 30 30 30 30];
- z = 0.02; %cm
- lambda = [1860 1880]; alpha = [14.19 31.08]; % Hale & Querry 1973 (1/cm)
- alpha = linterp(lambda, alpha, 1875);
- % Pulse Train
- %m = (121.9-88.7)/(37-28); b = 121.9-m*37;
- X = [28 37];
- Y = [88.7 121.9];
- Period = 0.01;
- %PT_Energy = mean(linterp(X,Y,PTAmps)*Period*100);
- PT_Energy = 3.52*.25*100 % 7/10 CW measurement I=28.7A
- PT_H = PT_Energy*exp(-alpha*z)*1e5/Area;
- % Single Pulse
- SPAmps = [ 25 25 25 25 24 24 24 23.5 25 25 23 24 24 23 23.5];
- X = [23 35];
- Y = [233.9 256.7];
- Period = 0.1; %seconds
- SP_Energy = mean(linterp(X,Y,SPAmps)*Period)
- SP_Energy = 2.92*8; % 7/10 CW measurement I=24.2A
- SP_H = SP_Energy*exp(-alpha*z)*1e5/Area;
- rho = .9932; % density of water at 37C
- cp = 4.18; % isobaric specific heat kJ/(kg*K) from engineering toolbox
- mean((alpha*SP_H*2)./(rho*cp))+30 % Temperature conversions
- % Pulse train energy at 37C: 91.28 +/- 4.17 mJ
- % Single 8 ms pulse energy at 37C: 27.02 +/- 0.83 mJ
- % Pulse train energy at ~18C: 121.9 mJ
- %% Functions
- function [ExperimentType] = AppendData(ExperimentType)
- ExperimentType.SingleAppened.Soma = [];
- ExperimentType.SingleAppened.Dendrites = [];
- ExperimentType.SingleAppened.Spines = [];
- ExperimentType.MultiAppened.Soma = [];
- ExperimentType.MultiAppened.Dendrites = [];
- ExperimentType.MultiAppened.Spines = [];
- temp = 0; DendriteParent = []; SpineNeuronParent = [];SpineParent =[];
- for N = 1:length(ExperimentType.Single)
- time = 752;
- ExperimentType.SingleAppened.Soma = [ExperimentType.SingleAppened.Soma ExperimentType.Single(N).Soma(1:time,1)];
- ExperimentType.SingleAppened.Dendrites = [ExperimentType.SingleAppened.Dendrites ExperimentType.Single(N).Dendrites(1:time,:)];
- ExperimentType.SingleAppened.Spines = [ExperimentType.SingleAppened.Spines ExperimentType.Single(N).Spines(1:time,:)];
- time = 900;
- ExperimentType.MultiAppened.Soma = [ExperimentType.MultiAppened.Soma ExperimentType.Multi(N).Soma(1:time,1)];
- ExperimentType.MultiAppened.Dendrites = [ExperimentType.MultiAppened.Dendrites ExperimentType.Multi(N).Dendrites(1:time,:)];
- ExperimentType.MultiAppened.Spines = [ExperimentType.MultiAppened.Spines ExperimentType.Multi(N).Spines(1:time,:) ];
- sz = size(ExperimentType.Single(N).Dendrites,2);
- DendriteParent = [DendriteParent; ones(sz,1)*N];
- sz = size(ExperimentType.Single(N).SpineParent,2);
- SpineNeuronParent = [SpineNeuronParent; ones(sz,1)*N];
- SpineParent = [SpineParent ExperimentType.Single(N).SpineParent+temp];
- temp = max(SpineParent);
- end
- NeuronID = [(1:N)'; DendriteParent; SpineNeuronParent];
- DendriteID = [nan(N,1); (1:length(DendriteParent))'; SpineParent'];
- Structure = categorical([repelem("Soma", N),...
- repelem("Dendrite", length(DendriteParent)),...
- repelem("Spine", length(SpineParent))])';
- ExperimentType.Labels = table(NeuronID, DendriteID, Structure);
- end
- function [Traces, trough] = RemoveDC(Traces,Frame)
- smoothed = smoothdata(Traces,1,"movmean",30);
- trough = min(smoothed(Frame-100:Frame,:),[],1);
- Traces = (Traces-trough)./trough;
- end
- function ExpTyp = ExtractPks(ExpTyp,Frames,artifactpts)
- for N = 1:length(ExpTyp)
- % Soma
- Soma = ExpTyp(N).Soma(1:Frames);
- Fs = length(Soma)/ExpTyp(N).ndinfo.duration; % sampling Fq
- time = (1:length(Soma))/Fs;
- frame = round(30*Fs);
- Soma = RemoveDC(Soma,frame);
- [Somalocs, ~, height, width] = FindDerivativePks(Soma,artifactpts, Fs, 1);
- ExpTyp(N).SomaPks = [Somalocs, height, width];
- % Spines
- Spines = ExpTyp(N).Spines(1:Frames,:);
- Spines = RemoveDC(Spines,frame);
- [spinelocs, spinelabel, pkheight, FWHM, bAPlabel] ...
- = FindDerivativePks(Spines,artifactpts, Fs, 3, Somalocs);
- SomaLabel = ones(numel(spinelabel),1)*N;
- SpineParent = ExpTyp(N).SpineParent(spinelabel)';
- UniqueSpines = unique(spinelabel.*~bAPlabel);
- ActiveSpine = ismember(spinelabel, UniqueSpines);
- SpinePks = [spinelabel, SpineParent, spinelocs, pkheight, FWHM, bAPlabel, ActiveSpine, SomaLabel];
- SpineEventMask = zeros(size(Spines,2),1);
- SpineEventMask(UniqueSpines(2:end)) = 1;
- ExpTyp(N).SpinePks = SpinePks;
- ExpTyp(N).SpineEventMask = SpineEventMask';
- ExpTyp(N).NumberSpineEvent = sum(~bAPlabel);% number of independent spine events
- end
- end
- function [SPkS] = SpinePeakStats(ExpTyp)
- timethresh = 30; % Seconds
- % Single
- if ~isempty(ExpTyp.Single)
- PksSpine = vertcat(ExpTyp.Single.SpinePks);
- ICS = ~logical(PksSpine(:,end-2)); % not bAP events
- ActiveSpines = logical(PksSpine(:,end-1)); % Active Spines only
- timemask = PksSpine(:,3)>timethresh; % After Stimulation
- for N = 1:max(PksSpine(:,end))
- NeuronMask = PksSpine(:,end)==N;
- TotalSpines = size(ExpTyp.Single(N).Spines,2);
- postmask = ICS & ActiveSpines & NeuronMask & timemask;
- premask = ICS & ActiveSpines & NeuronMask & ~timemask;
- SpikeFreq(N, 1) = numel(PksSpine(premask,1))/30;
- SpikeFreq(N, 2) = numel(PksSpine(postmask,1))/70;
- RespondingFraction(N, 1) = numel(unique(PksSpine(premask,1)))/TotalSpines;
- RespondingFraction(N, 2) = numel(unique(PksSpine(postmask,1)))/TotalSpines;
- end
- SPkS.SingleSpikeFreq = SpikeFreq;
- SPkS.SingleRespondingFraction = RespondingFraction;
- clear SpikeFreq RespondingFraction,
- % Peaks before the stimulus that are not AP
- mask = ICS & ~timemask;
- SPkS.Pre_Spine = PksSpine(mask,:);
- % Peaks after the stimulus that are not AP
- mask = ICS & timemask;
- SPkS.Post_Single = PksSpine(mask,:);
- SPkS.Single_bAP = PksSpine(~ICS,:);
- end
- % Multi
- if ~isempty(ExpTyp.Multi)
- PksSpine = vertcat(ExpTyp.Multi.SpinePks);
- ICS = ~logical(PksSpine(:,end-2)); % not bAP events
- ActiveSpines = logical(PksSpine(:,end-1)); % Active Spines only
- timemask = PksSpine(:,3)>timethresh; % After Stimulation
- for N = 1:max(PksSpine(:,end))
- NeuronMask = PksSpine(:,end)==N;
- TotalSpines = size(ExpTyp.Multi(N).Spines,2);
- postmask = ICS & ActiveSpines & NeuronMask & timemask;
- premask = ICS & ActiveSpines & NeuronMask & ~timemask;
- SpikeFreq(N, 1) = numel(PksSpine(premask,1))/30;
- SpikeFreq(N, 2) = numel(PksSpine(postmask,1))/90;
- RespondingFraction(N, 1) = numel(unique(PksSpine(premask,1)))/TotalSpines;
- RespondingFraction(N, 2) = numel(unique(PksSpine(postmask,1)))/TotalSpines;
- end
- SPkS.MultiSpikeFreq = SpikeFreq;
- SPkS.MultiRespondingFraction = RespondingFraction;
- % Peaks after the stimulus that are not AP
- mask = ICS & timemask;
- SPkS.Post_Multi = PksSpine(mask,:);
- SPkS.Multi_bAP = PksSpine(~ICS,:);
- end
- end
SpineGCaMPAnalysis.m at commit e3c56b3, no license · at the source
Overview
- Vanderbilt University, Vanderbilt Biophotonics Center, Nashville, Tennessee, United States
- Vanderbilt University, Department of Biomedical Engineering, Nashville, Tennessee, United States
- Air Force Research Laboratory, Bioeffects Division, JBSA Fort Sam Houston, Texas, United States
- University of Texas Health San Antonio, San Antonio, Texas, United States
- Department of Neurological Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, United States
Abstract
Significance: Infrared neural stimulation (INS) is an optical neuromodulation technique that elicits neural activity through photothermal temperature gradients. Photothermal gradients have been shown to alter neuronal excitability, but the effects on the dendritic spine (DS) structure and function have not been characterized.
Aim: We aim to determine whether INS induces calcium signaling in DS and whether this signaling alters filamentous actin (F-actin).
Approach: We used confocal imaging of cortical neurons expressing a genetically encoded calcium indicator (GCaMP)8f-Syn1 and mCardinal-LifeAct during laser exposure. Fluorescence signals were measured within regions of interest covering the DS. The resulting fluorescence measurements were baseline-normalized, and transient spiking activity in DS was quantified.
Results: Transient thermal gradients induce persistent calcium activity in a fraction of DS, independent of pulse duration but dependent on the absolute temperature and number of laser exposures. There is no relationship between the calcium activity and F-actin. Calcium signaling in DS was not mediated by ionotropic glutamate receptors but depended on extracellular entry.
Conclusions: These results indicate that transient thermal gradients elicit calcium activity in DS, but the induced activity does not alter F-actin, suggesting that transient thermal gradients may be a useful tool for studying calcium dynamics in DS without triggering traditional structural plasticity pathways.
Reproduced under the paper's license (CC BY), from the paper cited above.
Repository
Its files are read in the Code ↔ Paper reader above, with 8 matches between paragraphs and lines of code.
PanPandaPan615/Photothermal-Spine-Activity
e3c56b39cc7e8303501d6671dffdd249a8ade5ae, 6 February 2026Availability: 1 check, the latest on 27 September 2026: the link answers
- 27 September 2026: the link answers
7 files
- ActinDataExtraction.m, MATLAB, 134 lines, 1 match
- ExtendedImagingAnalysis.
m , MATLAB, 346 lines, 3 matches - FindDerivativePks.m, MATLAB, 128 lines
- SpineGCaMPAnalysis.m, MATLAB, 705 lines, 4 matches
- plotheatmap.m, MATLAB, 44 lines
- sigstar.m, MATLAB, 238 lines
- README.md, Text, 1 line
The paper's code and data availability statement is in the Data section.
Tracing map
Proposed by the machine: these links were found in the paper and verified at the source, without human review. The map will receive a Zenodo DOI once one of the paper's authors has validated it with their ORCID.
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Data
Datasets cited
- figshare:31286167, at figshare; found in “Code and Data Availability”
Code and Data Availability
The measured data supporting the findings of this article are publicly available at 10.6084/
Reproduced under the paper's license (CC BY), from the paper cited above.
Versions
The history of this record: each version stored by the harvester or made by a correction of its authors or of the maintainers of its code, and what changed in its facts. The texts of the paper (its abstract, its availability statements) are not part of it; versions that changed only those are not listed.
Version 2, 28 September 2026
- Funding: added Oak Ridge Institute for Science and Education; Air Force Office of Scientific Research: LRIR 22RHCOR012
Version 1, 27 September 2026: the first record
Recorded: type, language, journal, volume, issue, pages, dates, 10 authors, 5 keywords, 65 references.
Cite
This paper
Hardenburger, J., Grow, G., Rasiah, P., Gerges, M., Bixler, J., Oian, C., Millis, B., Valdez, C., Jansen, E. D., & Mahadevan-Jansen, A. (2026). Transient infrared laser exposure modulates calcium activity in cortical dendritic spines. Biophotonics discovery, 3(3), 035001. https://
BibTeX
@article{hardenburger202
author = {Hardenburger, Jacob and Grow, George and Rasiah, Pratheepa and Gerges, Mona and Bixler, Joel and Oian, Chad and Millis, Bryan and Valdez, Christopher and Jansen, E Duco and Mahadevan-Jansen, Anita},
title = {{Transient infrared laser exposure modulates calcium activity in cortical dendritic spines}},
journal = {Biophotonics discovery},
year = {2026},
month = jul,
volume = {3},
number = {3},
pages = {035001},
publisher = {Society of Photo-Optical Instrumentation Engineers},
issn = {3005-4745},
doi = {10.1117/
url = {https://
pmid = {42719458},
pmcid = {PMC13557455}
}
RIS
TY - JOUR
AU - Hardenburger, Jacob
AU - Grow, George
AU - Rasiah, Pratheepa
AU - Gerges, Mona
AU - Bixler, Joel
AU - Oian, Chad
AU - Millis, Bryan
AU - Valdez, Christopher
AU - Jansen, E Duco
AU - Mahadevan-Jansen, Anita
TI - Transient infrared laser exposure modulates calcium activity in cortical dendritic spines
T2 - Biophotonics discovery
J2 - Biophotonics Discov
PY - 2026
DA - 2026/
VL - 3
IS - 3
SP - 035001
SN - 3005-4745
PB - Society of Photo-Optical Instrumentation Engineers
DO - 10.1117/
UR - https://
LA - en
ER -
CSL-JSON
{
"id": "10.1117/
"type": "article-journal",
"title": "Transient infrared laser exposure modulates calcium activity in cortical dendritic spines",
"container-title": "Biophotonics discovery",
"author": [
{
"family": "Hardenburger",
"given": "Jacob"
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{
"family": "Grow",
"given": "George"
},
{
"family": "Rasiah",
"given": "Pratheepa"
},
{
"family": "Gerges",
"given": "Mona"
},
{
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"given": "Joel"
},
{
"family": "Oian",
"given": "Chad"
},
{
"family": "Millis",
"given": "Bryan"
},
{
"family": "Valdez",
"given": "Christopher"
},
{
"family": "Jansen",
"given": "E Duco"
},
{
"family": "Mahadevan-Jansen",
"given": "Anita"
}
],
"container-title-short":
"volume": "3",
"issue": "3",
"page": "035001",
"DOI": "10.1117/
"PMID": "42719458",
"PMCID": "PMC13557455",
"ISSN": "3005-4745",
"publisher": "Society of Photo-Optical Instrumentation Engineers",
"URL": "https://
"language": "en",
"issued": {
"date-parts": [
[
2026,
7,
1
]
]
}
}
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