- المجال: Education
- Number of terms: 1674
- Number of blossaries: 1
- Company Profile:
The University of Illinois at Chicago (UIC) is a public university located on three urban campuses in Chicago. UIC ranks in the top 50 US institutions with strong research programs. The university boasts one of the largest medical schools in the US and operates Illinois’ major public medical center ...
A light sensitive neuron. Photoreceptors interact with light which produces changes in their electrical properties which are communicated to other neurons. They constitute the first stage in the physiological process which underlies vision. The human retina, like the retina of most vertebrates, contains two broad classes of photo-receptors, rods and cones.
Industry:Physics
An area of the occipital lobe that performs the first stage of cortical visual processing. It receives inputs from the retina via the dLGN and sends outputs to other areas of the visual cortex. Also referred to as V1, striate cortex, and area 17.
Industry:Physics
A decrease in the potential difference across the cell membrane of a neuron. Most neurons depolarize in response to stimulation.
Industry:Physics
One of the two main classes of photoreceptor found in the vertebrate eye. Rods are very sensitive to light but fail to produce a usable signal at high light levels. They mediate night vision and have little effect on color vision in daylight.
Industry:Physics
The thesis that perceptual systems respond in such a way so as to make the ratio between the minimum perceptible change in a physical magnitude and the absolute value of that magnitude a constant. For example, Weber's law predicts that smallest detectable intensity difference between two lights will be larger on a bright background than a dim one. This conclusion is approximately true for high light levels.
Industry:Physics
A neuron that is excited (or inhibited) by stimuli in the center of its receptive field and inhibited (or excited) by stimuli in the periphery of its receptive field.
Industry:Physics
Neurons found in the retina that make widespread synaptic contacts with other retinal neurons and that are thought to play a role in generating the receptive field properties of other retinal neurons, including ganglion cells.
Industry:Physics
Two color stimuli that can be additively mixed to produce an achromatic color (see additive mixture).
Industry:Physics
A standard illuminant that is an approximation to average daylight. Like all illuminants, illuminant C is specified by its spectral power distribution.
Industry:Physics
A midbrain structure that plays a major role in relaying information from the various sensory receptors to other brain areas.
Industry:Physics
