occipital lobe Flashcards
staining of this cortical area has discovered blobs and interblobs
- -> colour perceptions =
- -> form and motion perceptions=
primary visual cortex
- blobs
- interblobs
you need to make sense of these 3 things to understand the world
colour, motion and form
the primary visual cortex receives input from the?
lateral geniculate nucleus (LGN)
the ? sends output to all other occipital areas
primary visual cotrtex
staining of this visual areas has discovered stripes
- -> thin stripes =
- -> thick and pale stripes =
secondary visual cortex
- colour perception
- form and motion perceptions
what visual stream is involved in visual guidance of moving for grasping (knowing where we are in space)
dorsal stream
what visual stream has neurons that take part in converting visual info into coordinates (where to move hand when grabbing something)
dorsal stream
what visual stream is involved in object perception (know what an object is)
ventral stream (inferior temporal cortex)
what visual stream is involved in biological and body movements (facial expressions, social gestures, recognition of movement)
ventral stream (superior temporal cortex)
V4 damage leads to
loss of colour cognition
- cannot see, imagine, recall or think about colour
V5 damage leads to
erases a persons ability to see objects in motion (can only see them when they are at rest)
V3 damage and larger legion of V4 damage results in
deficit in form perception
people are cortically blind when they have lesions to ?
V1
2 forms of visual processing
- visual space
- visual attention
egocentric space is which type of visual processing and is necessary for what and is in what lobe
visual space
- objects relative to self
- necessary for controlling action towards objects
- parietal lobe
