Neurophysiological correlates of hand preference in primary motor cortex of adult squirrel monkeys
نویسندگان
چکیده
منابع مشابه
Neurophysiological correlates of hand preference in primary motor cortex of adult squirrel monkeys.
Variability in the functional topography of area 4 was examined in adult squirrel monkeys. Conventional intracortical microstimulation techniques were used to derive detailed maps (250 microns interpenetration distances) of distal forelimb movement representations in both hemispheres of six monkeys. Spatial features of these representational maps were then compared to the hand preferred by the ...
متن کاملUse-dependent alterations of movement representations in primary motor cortex of adult squirrel monkeys.
This study was undertaken to document plastic changes in the functional topography of primary motor cortex (M1) that are generated in motor skill learning in the normal, intact primate. Intracortical microstimulation mapping techniques were used to derive detailed maps of the representation of movements in the distal forelimb zone of M1 of squirrel monkeys, before and after behavioral training ...
متن کاملDistal forelimb representations in primary motor cortex are redistributed after forelimb restriction: a longitudinal study in adult squirrel monkeys.
Primary motor cortex (M1) movement representations reflect acquired motor skills. Representations of muscles and joints used in a skilled task expand. However, it is unknown whether motor restriction in healthy individuals results in complementary reductions in M1 representations. With the use of intracortical microstimulation techniques in squirrel monkeys, detailed maps of movement representa...
متن کاملReorganization of primary motor cortex in adult macaque monkeys with long-standing amputations.
The organization of primary motor cortex (M1) of adult macaque monkeys was examined years after therapeutic amputation of part of a limb or digits. For each case, a large number of sites in M1 were electrically stimulated with a penetrating microelectrode, and the evoked movements and levels of current needed to evoke the movements were recorded. Results from four monkeys with the loss of a for...
متن کاملAn Additional Motor-Related Field in the Lateral Frontal Cortex of Squirrel Monkeys
Our earlier efforts to document the cortical connections of the ventral premotor cortex (PMv) revealed dense connections with a field rostral and lateral to PMv, an area we called the frontal rostral field (FR). Here, we present data collected in FR using electrophysiological and anatomical methods. Results show that FR contains an isolated motor representation of the forelimb that can be diffe...
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ژورنال
عنوان ژورنال: The Journal of Neuroscience
سال: 1992
ISSN: 0270-6474,1529-2401
DOI: 10.1523/jneurosci.12-08-02918.1992