Sensation and Perception 1 - 4

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

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

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