منابع مشابه
Visual adaptation: physiology, mechanisms, and functional benefits.
Recent sensory experience affects both perception and the response properties of visual neurons. Here I review a rapid form of experience-dependent plasticity that follows adaptation, the presentation of a particular stimulus or ensemble of stimuli for periods ranging from tens of milliseconds to minutes. Adaptation has a rich history in psychophysics, where it is often used as a tool for disse...
متن کاملCellular mechanisms of long-lasting adaptation in visual cortical neurons in vitro.
The cellular mechanisms of spike-frequency adaptation during prolonged discharges and of the slow afterhyperpolarization (AHP) that follows, as occur in vivo with contrast adaptation, were investigated with intracellular recordings of cortical neurons in slices of ferret primary visual cortex. Intracellular injection of 2 Hz sinusoidal or constant currents for 20 sec resulted in a slow (tau = 1...
متن کاملElective Mechanisms for Complex Visual Patterns Evealed by Adaptation
bstract—A great deal is known about the initial steps of isual processing. We know that humans have neural mechnisms selectively tuned to simple patterns of particular spaial frequencies and orientations. We also know that much ater in the visual pathway, in inferotemporal cortex, cells espond to extremely complex visual patterns such as imges of faces. Very little is known about intermediate l...
متن کاملCellular mechanisms that underlie bleaching and background adaptation
Experiments were performed on rod photoreceptors isolated from the eye of the larval tiger salamander to determine if the same or different mechanisms underlie the desensitization produced by dim background light (background adaptation) and that which persists in the steady state in darkness after a significant fraction of the photopigment is bleached (bleaching adaptation). We have examined ad...
متن کاملCellular Mechanisms That Underlie Bleaching and Background Adaptation
Experiments were performed on rod photoreceptors isolated from the eye of the larval tiger salamander to determine if the same or different mechanisms underlie the desensitization produced by dim background light (background adaptation) and that which persists in the steady state in darkness after a significant fraction of the photopigment is bleached (bleaching adaptation). We have examined ad...
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ژورنال
عنوان ژورنال: Journal of Vision
سال: 2010
ISSN: 1534-7362
DOI: 10.1167/6.13.1