Science / Sensation and Perception 1 - 4

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

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

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