PSY 200: Neuroscience - 2
25 Cards in this Set
| Front | Back |
|---|---|
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prefrontal cortex has to do with:
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attention
planning
interpersonal and emotional behaviors
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the two hemispheres are connected by ___
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the corpus callosum
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split brain
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severing of the corpus callosum so that the two hemispheres cannot communicate
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would you know if you were talking to someone with a split brain?
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essentially not
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right hemisphere focuses on
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taking in the global (like seeing the "L" made out of 's'
gestures
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left hemisphere focuses on:
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taking in the local (seeing the 's' that make up the "L")
speech
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it's less clear to identify hemisphere specialization in ___
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lef-handers and women
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____ photoreceptors respond to light
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126 million
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___ retinal ganglion cells carrying messages to the brain
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1 million
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lots of neural convergence: many photoreceptors signal the same ____
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ganglion cell
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ganglion
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a nerve cell cluster or a group of nerve cell bodies located in the peripheral nervous system.
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retinal ganglion cell's receptive field
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the group of photoreceptors that connect to that cell
or
the region in space that the cell "sees"
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retinal ganglion cells are wired in a ___ and called ___
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center vs. surround way
lateral inhibition
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why have lateral inhibition?
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makes the system preferentially respond to edges/changes
creates efficiency
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cells in V1 like ___
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oriented edges or bars of light
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specificity coding
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a single cell (grandmother cell) signals a single perceptual property
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___ has a cell tuned to just one object
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specificity coding
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distributed coding
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it is the pattern of activity across a number of cells that is important for perception
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we use ___ coding
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distributed
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distributed coding creates ___
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efficiency
allows for fine discrimination along a dimension (ex. orientation) using only few 'detector' neurons
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____ is a form of distributed coding
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color vision
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___ contains many wavelengths
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whit light (the light from the sun)
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color matching
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subject can match any color by adjusting the intensity of three primary lights
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3 cone types:
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short wave length light: s-cone - blue
m-cone : green
l-cone: red
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we can see so many colors because of ____
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distributed coding
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PSY 200: Visual Imagery