Behavioral Influences on Cortical Neuronal Responses to Optic Flow
نویسندگان
چکیده
منابع مشابه
Behavioral influences on cortical neuronal responses to optic flow.
Optic flow selectively activates neurons in medial superior temporal (MST) cortex. We find that many MST neurons yield larger and more selective responses when the optic flow guides a subsequent eye movement. Smaller, less selective responses are seen when optic flow is preceded by a flashed precue that guides eye movements. Selectivity can decrease by a third (32%) after a flashed precue is pr...
متن کاملDevelopment of cortical responses to optic flow.
Humans discriminate approaching objects from receding ones shortly after birth, and optic flow associated with self-motion may activate distinctive brain networks, including the human MT+ complex. We sought evidence for evoked brain activity that distinguished radial motion from other optic flow patterns, such as translation or rotation by recording steady-state visual evoked potentials (ssVEPs...
متن کاملFunctional organization of parietal neuronal responses to optic-flow stimuli.
We analyzed the dissimilarity matrix of neuronal responses to moving visual stimuli using tree clustering and multidimensional scaling (MDS). Single-cell activity was recorded in area 7a while random dots moving coherently in eight different kinds of motion (right-, left-, up-, and downward, clockwise, counterclockwise, expansion, contraction) were presented to behaving monkeys with eyes fixate...
متن کاملCortical responses to optic flow and motion contrast across patterns and speeds
Motion provides animals with fast and robust cues for navigation and object detection. In the first case, stereotyped patterns of optic flow inform a moving observer about the direction and speed of its own movement. In the case of object detection, regional differences in motion allow for the segmentation of figures from their background, even in the absence of color or shading cues. Previous ...
متن کاملNeuronal responses to optic flow in the monkey parietal area PEc.
Area PEc, a high order association area, is located in the dorsocaudal portion of the superior parietal cortex. PEc neurons encode visual motion signals, especially the direction of stimulus motion. The present study tested if PEc neurons also process visual correlates of self-motion. The extracellular activity of single neurons in response to optic flow stimuli was recorded in two monkeys (Mac...
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ژورنال
عنوان ژورنال: Cerebral Cortex
سال: 2006
ISSN: 1047-3211,1460-2199
DOI: 10.1093/cercor/bhl083