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showed chronic “blindness”-like behavior. Therefore, apparently having an intact visual cortex is not enough for visual behavior unless it is connected to the remaining frontal and parietal cortices. As Weiskrantz suggested, signals to prefrontal cortex may be necessary for conscious awareness , at least in humans. What may be the neural basis of blindsight? It is known that some stimuli, such as motion, can elicit activity in extrastriate visual areas even in the absence of V1 . The pathway continues to be mapped out in more detail by new studies, but the visual signal likely goes from the retina to subcortical areas, like the lateral geniculate nucleus, superior colliculus, and pulvinar, and from there directly to extrastriate areas, bypassing V1 . This leads to the question of why the patients are not visually conscious, given that there is activity in the visual areas. An intuitive view may be that feedback to V1 is necessary . Amazing vintage guitar scales posterHowever, such a view would be incompatible with findings that patients without V1 may nonetheless sometimes have conscious visual experiences . Although blindsight is about vision, it also speaks to affective processes. In particular, it was found that patients can unconsciously detect emotional expressions in faces presented to the blind field . These findings further
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