receptive field


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receptive field

that part of the retina of which the photoreceptors (rods and cones) pertain to a single optic nerve fiber. The response of a neuron to stimulation of its receptive field depends on the type of neuron and the part of the field that is illuminated; an "on-center" neuron is stimulated by light falling at the center of its receptive field and inhibited by light falling at the periphery; an "off-center" neuron reacts in exactly the opposite fashion; that is, it is inhibited by light falling at the center of its receptive field. In either case, the net response depends on a complex switching action in the retina. When an entire receptive field is equally illuminated, the response of receptors at the center of the field predominates.

receptive field

A description of the effective stimuli of a given neuron. For sensory receptor neurons, the receptive field is the type of effective stimulation (e.g., light, sound, mechanical pressure) and the range of sensitive locations (e.g., center of visual field, left auditory field, tip of right thumb).
See also: field

receptive field

an area of the body surface over which a single sensory receptor, or its afferent nerve fiber, is capable of sensing stimuli. In some body area, e.g. face, ears, front paws, the sensitive areas are small; over the back they are larger.
References in periodicals archive ?
In order to compute eye gaze patterns related to a user's interest, a statistical learning algorithm has been incorporated to compute a visual receptive field so as to estimate interest [10][2].
Learning principles of RFWR are alternative and powerful methods to accomplish incremental constructive learning based on local receptive fields, and its application on AWJ cutting process might be very interesting and useful.
The only strategy that can lead to unambiguous results is electrophysiological recording from units in the receptive fields.
Vernon Mountcastle, a neurophysiologist at Johns Hopkins University in Baltimore, told SCIENCE NEWS there have been many past attempts to replace the receptive field model with another theory, "but this is the first one that is partly successful.
Some chapter topics are brain vesicular monoamine transporters and apoptosis, semantically mediated integration of cognition, control of cortical synaptic receptive fields by neuromodulation and patterned sensory input, links between Down syndrome and Alzheimer's, and mind wandering in the default state.
Receptive fields of cells in striate cortex of very young, visually inexperienced kittens.
The theory of expanding receptive fields perhaps best explains how a local injury gets translated into a generalized syndrome like fibromyalgia.