Abstract
Neural connections between lateral hypothalamus (LHA) and orbitofrontal cortex (OBF), between amygdala (AMG) and OBF, and between LHA and motor cortex (MC) were established by electrical stimulation and mass potential recording in monkey (Macaca mulatta). Neural unit activity variation in OBF, and MC was recorded during high fixed ratio (FR) bar press schedules for food. Activity variation patterns were correlated with LHA activity patterns seen in earlier experiments, with LHA-OBF, AMG-OBF, and LHA-MC connections, and with changes in FR schedules. OBF map of responses correlated with activity associated patterns and with OBF-LHA and OBF-AMG connections. The MC hand area map of responses showed regular pattern of organization and correlated both activity response patterns and MC-LHA connections. Results confirmed and extended previous similar experiments. These results have further clarified the functional correlations through which the various neural centers communicate to control feeding behavior.
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