Sensation and Perception 1 - 4

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

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

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