photon. =nbsp; - on/off axis 3. Stimuli and =ontrols =nbsp; -Dark =nbsp; &n=sp; Continuous =nbsp; &n=sp; Recorded Eye =nbsp; &n=sp; &nbs=; Shuttered =nbsp; &n=sp; &nbs=; Hooded -Light Stimuli =nbsp; &n=sp; Ganzfield =nbsp; &n=sp; &nbs=; White =nbsp; &n=sp; &nbs=; Monochromatic =nbsp;