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REVERBERATING CIRCUITS link the cerebellum (the fissured organ at right center of each picture) to the sensory nerves which connect tactile, visual, proprioceptive and auditory sense organs to the cerebrum. While part of the messages from these organs goes to the cerebrum, part detours through the cerebellum, then "reverberates" through the cerebrum to the cerebellum. It is thought that these circuits server a feedback function. Proprioceptive impulses from muscles (lower left) may reach more than one cerebral center. (Reprinted from Scientific American, Aug 1958)
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