Interactions within the Hand Representation in Primary Somatosensory Cortex of Primates
نویسندگان
چکیده
منابع مشابه
Thalamocortical connections of the primary somatosensory cortex
Although each subdivision of primary somatosensory cortex (SI) receives dense input from the thalamus, but the exact location and type of information that the fibers convey have not been identified yet. In the present study, the exact source of thalamocortical fibers to areas 2 and 3b was investigated using tract-tracing techniques. Following injection of tracer into area 3b, labeled neurons ...
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Primary somatosensory cortex hand representation dynamically modulated by motor output.
The brain's primary motor and primary somatosensory cortices are generally viewed as functionally distinct entities. Here we show by means of magnetoencephalography with a phantom-limb patient, that movement of the phantom hand leads to a change in the response of the primary somatosensory cortex to tactile stimulation. This change correlates with the described conscious perception and suggests...
متن کاملMultiple representations of the body within the primary somatosensory cortex of primates.
Microelectrode mapping experiments indicate that the classical primary somatosensory cortex of monkeys consists of as many as four separate body representations rather than just one. Two complete body surface representations occupy cortical fields 3b and 1. In addition, area 2 contains an orderly representation of predominantly "deep" body tissues. Area 3a may constitute a fourth representation.
متن کاملModular processing in the hand representation of primate primary somatosensory cortex coexists with widespread activation.
Neurons in the hand representation of primary somatosensory cortex (area 3b) are known to have discretely localized receptive fields; and these neurons form modules that can be visualized histologically as distinct digit and palm representations. Despite these indicators of the importance of local processing in area 3b, widespread interactions between stimuli presented to locations across the h...
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ژورنال
عنوان ژورنال: Journal of Neuroscience
سال: 2010
ISSN: 0270-6474,1529-2401
DOI: 10.1523/jneurosci.4765-09.2010