منابع مشابه
Attentional modulation of adaptation in V4.
Adaptation and visual attention are two processes that alter neural responses to luminance contrast. Rapid contrast adaptation changes response size and dynamics at all stages of visual processing, while visual attention has been shown to modulate both contrast gain and response gain in macaque extrastriate visual cortex. Because attention aims to enhance behaviorally relevant sensory responses...
متن کاملLaminar Organization of Attentional Modulation in Macaque Visual Area V4
Attention is critical to perception, serving to select behaviorally relevant information for privileged processing. To understand the neural mechanisms of attention, we must discern how attentional modulation varies by cell type and across cortical layers. Here, we test whether attention acts non-selectively across cortical layers or whether it engages the laminar circuit in specific and select...
متن کاملAttentional modulation of adaptation to illusory lines.
Selective visual attention modulates neuronal activation in various cortical areas. This type of neuronal modulation could happen even in the early stages of visual processing where specific attributes of visual stimuli are processed. It has been shown that different forms of visual aftereffects, such as tilt aftereffect, motion aftereffect, and figural aftereffect, are modulated by attention. ...
متن کاملSpatial summation can explain the attentional modulation of neuronal responses to multiple stimuli in area V4.
Although many studies have shown that the activity of individual neurons in a variety of visual areas is modulated by attention, a fundamental question remains unresolved: can attention alter the visual representations of individual neurons? One set of studies, primarily relying on the attentional modulations observed when a single stimulus is presented within the receptive field of a neuron, s...
متن کاملAttentional Modulation of Cell-Class-Specific Gamma-Band Synchronization in Awake Monkey Area V4
Selective visual attention is subserved by selective neuronal synchronization, entailing precise orchestration among excitatory and inhibitory cells. We tentatively identified these as broad (BS) and narrow spiking (NS) cells and analyzed their synchronization to the local field potential in two macaque monkeys performing a selective visual attention task. Across cells, gamma phases scattered w...
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ژورنال
عنوان ژورنال: European Journal of Neuroscience
سال: 2009
ISSN: 0953-816X,1460-9568
DOI: 10.1111/j.1460-9568.2009.06803.x