Mechanisms Of Motor Control

Neurophysiologists have only begun to understand the mechanisms of the motor system, and this section should be considered a highly provisional account of these mechanisms. Most of the relevant information comes from studies of neuronal activity in awake, behaving monkeys.

In generating the plan for a simple reaching movement, the initial problem involves kinematics, figuring out the current location of the end effector (often the hand), the location of the target, and perhaps the path between them. Both the premotor cortex (PM) and the posterior parietal cortex (PPC) appear to have key roles in solving this problem. The general locations of these cortical regions are depicted in Fig. 2.

Breaking Bulimia

Breaking Bulimia

We have all been there: turning to the refrigerator if feeling lonely or bored or indulging in seconds or thirds if strained. But if you suffer from bulimia, the from time to time urge to overeat is more like an obsession.

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