| A | B |
|---|
| naive realism | view that perception accurately portrrays all objects and events in the world |
| subjective idealism | view that the world is entirely the product of the mind |
| sensory transduction | the process occuring within the sensory reeptors by which energy is converted into neural signals |
| stimulus | pattern of physical energyy set up by an object or event in the environment |
| materialism | view that ascribes all mental experiences to neural events |
| dualism | view that mental events need not be associated with neural events |
| receptive field | area of the retina in which the activity of a neuron can be influenced (region of visual space) |
| convergence | ability of the eyes to turn inward, toward each other |
| acuity | measure of resolution |
| image | spatial distribution of light energy produced by the action of some optical system |
| refraction | the bending of light by an optical element such as a lens |
| afterimage | visual sensation that persists after exposure to some intese stimulus |
| conjunctive | movements of the eye in which both eyes move in the same direction |
| vergence | eye movements in which eyes move in opposite directions |
| pupil | aperture in the eye formed by two sets of concentric bands of muscle |
| accomodation | variation in the eye's optical power caused by temp. changes in the shape of the lens |
| retinal image | distribution of light falling on the retina |
| emmeptropia | eye whose focal point in the absece of accommodation, coincides exactly with the retina (perfect vision) |
| myopia | abnormally long eye, retinal image is blurred because focal point lies in front of the retina (near sighted) |
| hyperopia | abnormally short eyeball, image is blurred because focal point is behind the retina ( far sighted) |
| synapse | gap between adjacent nerve cells |
| single cell recording | use of microelectrode to record the neural activity of individual nerve cells as they respond to stimulation |
| orientation selectivity | cisual corical cells who respond best to contours of a particular orientation; which decreases aas the orientation deviates increasingly from the preferred value |
| retinal ganglion cells | collector cells responsible for the last stage of visual procesing; form the optic nerve |
| action potentials | brief electrical disharges ; generated by axons |
| optic nerve | bundle of axons of retinal ganglion cells that carries visual infol from the eye to the brain |
| optic chiasm | point of 3wwhich neverve fibers from the two eyes are rerouted to higher visual centers, |
