Sensation and Perception 1 - 4

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Can you name the Sensation and Perception Ch. 1-4?

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2mm thick layer on the surface of the brain
changes shape to adjust the eye's focus for objects at differing distances
area in the retina in which light alters the firing rates of a cell
band of energy in the electromagnetic spectrum visible to the human naked eye
the point where the observer reliably marks the difference between standard and comparator stimuli
theory stating that detection of a stimulus depends on both the participant's sensitivity to the stimulus and their response criterion
processing based on incoming data
cells that respond best to corners and angles
concatenated column made up of the 3 columns in the striate
automatic response that makes the 2 pupils the same size
stimulus adjusted until observer can barely detect a stimulus
neurons in this cortex respond preferentially to specific forms
representation of a particular object in the environment by the firing of relatively small number of neurons
hole bounded by the iris
shift from cone vision to rod vision that causes enhanced perception of short wavelengths during dark adaptation
area activated by bodies and parts of bodies
inability to recognize objects as wholes, only parts of them.
2 components that make up rhodopsin
which LGN layers receive signals from the contralateral eye?
ability to see fine detail
impinging on receptors results in an internalized schema of the stimulus
illusion made up of 9 black boxes with white lines between. Explained by lateral inhibition
proportion of the stimulus for the observer to notice a change 50% of the time
excititory and inhibitory areas are arranged side by side. This cell responds best to bars of a particular orientation
the hypothesis that an area’s appearance is influenced in part by the surroundings that the area appears to belong to. This principal has been used to explain White’s Illusion
the stimulus that a person is attending to at a given point in time
process where the lens varies its focus to bring the focus point forward so a near object falls on the retina
normal eye
fixed number of stimuli chosen with different intensities and presented at random
what does the complex cortical cell respond best to?
the competition between the center and surround regions of a centre surround receptive field, caused by the fact that one is excitatory and the other is inhibitory. Stimulation the
an observer's sensitivity to light at each wavelength accross the visible spectrum
QuestionAnswer
made up of only cones. More detailed vision
column in the striate cortex where all neurons are grouped have their receptive field at the same place as on the retina
2 muscles that control the pupil size
disorder where the eyeball is too short (specific)
rapid increase of positive charge in a nerve fibre that traveles down the fiber. Also called the nerve impulse.
type of neuron important for perception specialized to respond to environmental stimuli
area activated by indoor/outdoor rooms, contains info about spatial layout
pathway from v1 to the temporal lobe. responsible for identifying an obj.
smallest amount of difference a person can detect
located in the fusiform gyrus on the underside of the brain. Face recognition
a cell that responds only to a specific stimulus
group of neurons with similar selective responses
eyeball is too short. Near objects don't focus
how many layers does the LGN have?
longest wavelength on the electromagnetic spectrum
remove/destruct tissue from the nerves system
visual pigment molecules in rods
inhibition that's transmitted across the retina
in vision, bringing objects located at different distances into focus by changing the shape of the lens.
specialized cell for achromatic vision and scotopic vision
pathway from the v1 to the parietal lobe. The Action pathway
action potential with the absence of a stimuli
once a response is triggered it travels all the way down the axon without decreasing in size
disorder where the cornea or lens bends too much
distance between peaks of electromagnetic waves
small area where the optic never leaves the back of the eye. No visual receptors in they area.
part of a neuron that conducts nerve impulses over distances. Aka nerve fibre.
range of visible light
6 cells in the retina
interval between one action potential occuring and the next is being generated
genetic disorder causing the degradation of the retin
area involved in controlling eye movements and other visual behaviors
QuestionAnswer
What is a property of the optic nerve cell (ganglion cell)
which LGN layers receive signals from the ipsilateral eye?
shortest wavelength on the electromagnetic spectrum
gathers and concentrates light to form objects on the retina.
-70mV
representation of a particular object in the environment by patterns of firing groups of neurons specialized to recognize a specific stimulus
difference in electrical charge between the inside and outside of a cell
column in the striate cortex that contain cells that respond best to a particular orient. Adjacent columns have only slight variation
minimum amount of stimulus needed to perceive it
knowledge based processing
neuron becoming more positive. preparing for action potential
all the thins in our environment we could potentially perceive
column in the striate cortex where neurons are grouped based on what eye they respond better to
 
A conscious sensory experience
the difference in intensity at which the bars can barely be seen
map in which each point on the LGN corresponds to the point on the retina
the nucleus in the thalamas that receives inputs from the optic nerve and cortex, and in turn sends fibers to the cortex
a neuron that transmits signals laterally in the retina. Cells synapse with bipolar cells and ganglion cells.
located in the occipital lobe. Also known as the primary visual receiving area
eye chart
to measure absolute threshold. The Experimenter presents stimuli in ascending/descending order
eyeball too long. Far objects don't focus
transform one kind of energy into another
condition marked by the destruction of foveal receptors creates a blind spot. common in old people
physiological effect of selective adaptation on neurons
difference in spectral sensitivity is due to what?
representation of a particular object in the environment by the firing of neurons tuned to respond specifically to that object
disorder which makes the someone unable to recognize faces
specialized cell for coloured vision, detailed vision, and photopic vision
example of a feature detector
response of proportion of neurons can be shaped by experience

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