Skeletomotor Functions

Lesions in the anterior cingulate cortex can cause contralateral motor neglect. Stimulation of the CMAs evoke skeletomotor movements, although with lower probability and a higher stimulation threshold than the primary motor cortex. The evoked movements are typically fast, brief, limited to a single joint, and demonstrate a topographical organization. Complementary to these findings, single-unit recordings have shown that neuronal activity in the CMAs precedes voluntary movements. Neurons in CMAr are more activated during self-paced than stimulus-triggered movements and may precede the movement by long lead times (0.5-2 sec). In contrast, activity in the caudal CMAs shows less specificity to self-paced movements and is characterized by shorter lead times preceding the movement. Findings have linked CMA activity, particularly in CMAr neurons, to reward-based response selection tasks. Different CMA neural populations are active during the learning of new reward contingencies and during the execution of familiar, well-learned responses.

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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