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93 lines
2.6 KiB
Matlab
93 lines
2.6 KiB
Matlab
function V1_cross_orient_orient_diam
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clear
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crop=15;
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grating_wavel=6;
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patch_diams=[7,13,19];
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iterations=12;
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contrast=0.25;
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phase=0;
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grating_angles=[-45:15:45];
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node=1;
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[wFFon,wFFoff]=dim_conv_V1_filter_definitions;
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clf
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j=0;
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for diam=patch_diams
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j=j+1;
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i=0;
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clear Ion Ioff
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for angle=grating_angles
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i=i+1;
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fprintf(1,'.%i.',i);
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%cross-orientation simulus
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I=image_cross_orientation_sine_circular(diam,20,grating_wavel,grating_wavel,...
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0,angle,phase,phase,contrast,contrast);
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[a,b]=size(I);
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[Ion,Ioff]=preprocess_image(I);
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%plot original image
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maxsubplot(3,length(grating_angles),i),
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imagesc(I(crop+1:a-crop,crop+1:b-crop),[0,1]);
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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(grating_angles),i+length(grating_angles)),
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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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%perform competition
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[y,ron,roff,eon,eoff,Y]=dim_conv_on_and_off(wFFon,wFFoff,Ion,Ioff,iterations);
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y=mean(Y,4);
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maxsubplot(3,length(grating_angles),i+2*length(grating_angles)),
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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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sc(j,i)=y(ceil(a/2),ceil(b/2),node);
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end
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end
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%for j=1:3, sc(j,:)=sc(j,:)./max(sc(j,:)); end
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figure(1),clf
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subplot(3,2,[4,6])
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plot(grating_angles,sc(1,:),'g-d','LineWidth',4,'MarkerSize',12,'MarkerFaceColor','w');
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hold on
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plot(grating_angles,sc(2,:),'r-o','LineWidth',4,'MarkerSize',12,'MarkerFaceColor','w');
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plot(grating_angles,sc(3,:),'b-s','LineWidth',4,'MarkerSize',12,'MarkerFaceColor','w');
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axis([-45,45,0,0.022])
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set(gca,'XTick',[-45,0,45],'YTick',[0:0.01:0.02],'FontSize',20,'Box','off');
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xlabel('Mask Orientation (degrees)'),ylabel('Response')
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figure(2),clf
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maxsubplot(5,2,8)
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patch_diam=13;
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maxdiam=patch_diam;
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spacingh=25;
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L=zeros(maxdiam+2,2*spacingh+maxdiam+2)+0.5;
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centv=ceil(maxdiam/2)+1;
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centh=ceil(maxdiam/2)+1;
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gal=length(grating_angles);
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for angle=grating_angles([1,ceil(gal/2),gal])
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phase=0;
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I=image_cross_orientation_sine_circular(patch_diam,0,grating_wavel,grating_wavel,...
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0,angle,phase,phase,contrast,contrast);
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%cross-orientation simulus
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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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imagesc(L);
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axis('equal','off')
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axis([-0,80,0,maxdiam+2])
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hold on
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cmap=colormap('gray');
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%cmap=1-cmap;
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%colormap(cmap);
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