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Definition
| sensory-motor cortex. areas that are traditionally sensory tha contribute to motor control |
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| precentral gyrus. foot and lower leg on the medial surface of the hemisphere and the rest on the lateral surface |
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Term
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Definition
| load in direction of movement, equals less activity in corticospinal tract neurons. load in other direction equal more acitivity in cortico-spinal neurons. activity correlated with force needed to move. |
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Term
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Definition
| lesions = complex motor acts deficient but no paralysis...high electrical stimulation needed but complex movements accross several joints occur...neural activity associated with 'motor set' and contingent upon whether generated by a stimulus or internally...blood flow increases on mental movement alone |
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Definition
| weakness/paralysis of muscle groups when lesioned, low electrical threshold and movement in small muscle groups, neural activity correlated with muscle contractions and clear relation to force, blood flow increases upon actual movement only |
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Term
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Definition
| broadmann's areas 3, 1, 2 on postcentral gyrus |
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Term
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Definition
| when large numbers of neurons are activated at the same time, large currents flwo in extracellular space, this is that resulting potential |
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