Sensation and Perception 1 - 4

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

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

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