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after-effect, perceptual

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after-image

after-image  

A sensory experience, especially a visual image, that persists after the stimulus has ceased, also called a primary afterimage, or one that appears after a primary afterimage. The first in the ...
attention

attention  

Sustained concentration on a specific stimulus, sensation, idea, thought, or activity, enabling one to use information-processing systems with limited capacity to handle vast amounts of information ...
calibrate

calibrate  

V.1 (often be calibrated) mark (a gauge or instrument) with a standard scale of readings.2 correlate the readings of (an instrument) with those of a standard in order to check the instrument's ...
channels, neural

channels, neural  

One normally thinks of a channel as a physically existing and easily seen structure, such as a river course. Nerve fibres are, similarly, easily seen courses along which neural signals ...
filling-in

filling-in  

The action of the visual system or other perceptual system, when responding to a stimulus with gaps or missing information, of guessing the missing information by assuming that it is the same as the ...
hallucination

hallucination  

n. a false perception of something that is not really there. Hallucinations may be visual, auditory, tactile, gustatory (of taste), or olfactory (of smell). They may be provoked by mental illness ...
illusion

illusion  

(i-loo-zhŏn)a false perception due to misinterpretation of the stimuli arising from an object. Illusions can occur in normal people and may also occur in almost any psychiatric syndrome. Compare ...
motion-induced blindness

motion-induced blindness  

A tendency for a stationary or slowly moving stimulus to disappear from sight when viewed against a pattern of moving elements. In a standard demonstration of this phenomenon, three stationary or ...
synaesthesia

synaesthesia  

1 A sensory experience elicited by a stimulus in a different sensory modality, as when particular sounds evoke sensations of colour. See also chromaesthesia, photism (1).2 The experience of a ...

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