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127 lines
3.7 KiB
Matlab
127 lines
3.7 KiB
Matlab
function V1_surround_suppression_iso_cent_contrast_temporal
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linear=0;
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noLGNsat=0;
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crop=0;
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iterations=180;
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grating_wavel=6;
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patch_diam=13;
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contrasts=[0.0125,0.025,0.05,0.1,0.2,0.4,1];
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node=1;
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surr_drift_rate=4;
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cent_drift_rate=4;
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[wFFon,wFFoff]=dim_conv_V1_filter_definitions;
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clf
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scount=0;
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for conts=[0,0.4];
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scount=scount+1;
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ccount=0;
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clear Ion Ioff;
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for contc=contrasts
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ccount=ccount+1;
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cent_phase=0;
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surr_phase=0;
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for t=1:iterations
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I=image_contextual_surround(patch_diam,0,patch_diam,grating_wavel,grating_wavel,0,cent_phase,surr_phase,contc,conts);
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[Ion(:,:,t),Ioff(:,:,t)]=preprocess_image(I,noLGNsat);
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cent_phase=cent_phase+cent_drift_rate;
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surr_phase=surr_phase+surr_drift_rate;
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end
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[a,b,z]=size(Ion);
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%plot original image
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maxsubplot(3,length(contrasts),ccount),
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imagesc(I(crop+1:a-crop,crop+1:b-crop,:),[0,0.5]);
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axis('equal','tight'), set(gca,'XTick',[],'YTick',[],'FontSize',11);
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drawnow;
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%initial response without competition
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[y,ron,roff,eon,eoff,Y]=dim_conv_on_and_off(wFFon,wFFoff,Ion,Ioff,1);
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y=mean(Y,4);
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maxsubplot(3,length(contrasts),ccount+length(contrasts)),
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imagesc(y(crop+1:a-crop,crop+1:b-crop,node),[0,0.05]),
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axis('equal','tight'), set(gca,'XTick',[],'YTick',[],'FontSize',11);
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drawnow;
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%perform competition
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if linear
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[y,Y]=linear_on_and_off(wFFon,wFFoff,Ion,Ioff,iterations);
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else
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[y,ron,roff,eon,eoff,Y]=dim_conv_on_and_off(wFFon,wFFoff,Ion,Ioff,iterations);
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end
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y=mean(Y,4);
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maxsubplot(3,length(contrasts),ccount+2*length(contrasts)),
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imagesc(y(crop+1:a-crop,crop+1:b-crop,node),[0,0.01]),
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axis('equal','tight'), set(gca,'XTick',[],'YTick',[],'FontSize',11);
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drawnow;
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%record neural response
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respComplex(1:iterations)=calc_resp_complex(Y,ceil(a/2),ceil(b/2),node+[0:8:31]);
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meanrespComplex(scount,ccount)=mean(respComplex,2);
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respSimple(1:iterations)=Y(ceil(a/2),ceil(b/2),node,:);
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meanrespSimple(scount,ccount)=mean(respSimple,2);
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end
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end
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figure(1),clf
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subplot(3,2,[4,6])
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semilogx(contrasts,meanrespSimple(1,:),'b-o','LineWidth',2,'MarkerSize',10,'MarkerFaceColor','b');
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hold on
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semilogx(contrasts,meanrespSimple(2,:),'r-o','LineWidth',4,'MarkerSize',10,'MarkerFaceColor','w');
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if linear
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axis([0.01,1,0,0.25])
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set(gca,'YTick',[0:0.1:0.25]);
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else
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axis([0.01,1,0,0.005])
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set(gca,'YTick',[0:0.001:0.005]);
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end
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set(gca,'FontSize',20);
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xlabel('Centre Contrast'),ylabel('Response')
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figure(2),clf
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subplot(3,2,[4,6])
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semilogx(contrasts,meanrespComplex(1,:),'b-o','LineWidth',2,'MarkerSize',10,'MarkerFaceColor','b');
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hold on
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semilogx(contrasts,meanrespComplex(2,:),'r-o','LineWidth',4,'MarkerSize',10,'MarkerFaceColor','w');
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if linear
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axis([0.01,1,0,0.25])
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set(gca,'YTick',[0:0.1:0.25]);
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else
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axis([0.01,1,0,0.1])
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set(gca,'YTick',[0:0.02:0.1]);
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end
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set(gca,'FontSize',20);
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xlabel('Centre Contrast'),ylabel('Response')
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figure(3),clf
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maxsubplot(3,2,4)
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image_diam=patch_diam*2;
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spacingh=(125-image_diam)/2;
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L=zeros(image_diam*2+2,2*spacingh+image_diam)+0.5;
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centv=ceil(image_diam/2)+1;
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for conts=[0,0.4];
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centh=ceil(image_diam/2)+2;
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for contc=contrasts([1,4,7])
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I=image_contextual_surround(patch_diam,0,patch_diam/2,grating_wavel,grating_wavel,0,0,0,contc,conts);
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[a,b]=size(I);
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L(centv-floor(a/2):centv+floor(a/2),centh-floor(a/2):centh+floor(a/2))=I';
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centh=centh+spacingh;
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end
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centv=centv+image_diam;
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end
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imagesc(L,[0,1]);
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axis('equal','off')
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ends=10;
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axis([-10,2*spacingh+image_diam+10,0,2*image_diam])
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cmap=colormap('gray');
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%cmap=1-cmap;
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%colormap(cmap);
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hold on
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plot(1+(image_diam+spacingh)/2+[0,spacingh],image_diam/2.*[1,1],'bo','LineWidth',2,'MarkerSize',10,'MarkerFaceColor','b');
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plot(1+(image_diam+spacingh)/2+[0,spacingh],3*image_diam/2.*[1,1],'ro','LineWidth',4,'MarkerSize',10,'MarkerFaceColor','w');
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