Unformatted text preview: he striate cortex will lead to blindness! Scotoma: damage to the primary visual cortex that can cause blindness in
the corresponding area of the visual field.
Blindsight: the ability of patients to respond to stimuli in their scotomas
even though they have no conscious awareness of the stimuli.
If damaged in V1 causes cortical blindness; just as blind as if your eyes were removed. This are called scotomas (blindness) usually occurs in stroke
patients, and will cause blindness in particular ﬁelds (for ex. if in right, blindness in left visual ﬁeld). Visual Pathway!
Visual Capacity in the Hemianopic Field
Following a Restricted Occipital Ablation!
Weiskrantz, Warrington, Sanders, &
Marshall ! Hypothesis: !
That secondary pathways from LGN to
extrastriate regions bypass V1 can lead to
unconscious processing of stimuli.!
Blightsight people have a scotoma in their visual ﬁeld and have no cognitive knowledge of their vision, but still respond to certain aspects of
vision. Basically shown a light in a particular part of the visual ﬁeld and in...
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- Fall '11
- Lateral geniculate nucleus, visual cortex