Cortical Vision Flashcards
Which visual pathway is part of our cortical visual system?
The retinogeniculostriate pathway
Which part of the visual cortex lies beyond the striate?
Extrastriate
What is the extrastriate cortex used for?
Higher-order visual processing
What can be described as the region of space in which visually sensitive cells respond to stimuli?
Receptive field
Which type of neurophysiological assessment can be used to trace the activity of a single neuron?
Single-cell recording
Area MT of macaque monkeys is called what in humans?
V5
What was the main finding of Maunsell & Van Essen’s (1983) research on area MT:
a) neurons are selective for motion detection
b) stimuli must move in a certain direction to activate the neuron
c) neurons in the MT/V5 are disorganised compared to other parts of the cortical visual system
A) neurons are selective for motion detection
Maunsell & Van Essen (1983) found that stimuli moving across the receptive field in directions other than left-downwards elicited the ___ activity: most or least
Least
What neuroimaging tool did Zeki et al. (1991) use to demonstrate the specialisation of function in the human V1?
Positron emission topography (PET) scans
Zeki et al. (1991) found that which part of the extrastriate visual cortex specialises in colour processing?
V4
Area V4 is located along the ____ stream: dorsal or ventral.
Ventral
Area V5 is located along the ____ stream: dorsal or ventral.
Dorsal
Name the two cortical visual pathways:
Dorsal, ventral
Neurons in area V5 are ___ selective: motion or colour.
Motion
Neurons in area V4 are ____ selective: motion or colour.
Colour
