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refers to one of four longitudinal cell columns in the periaqueductal gray, which surrounds the dorsal and lateral aspects of the cerebral aqueduct in the midbrain tegmentum. Revealed best by stain for nitiric oxide synthase (NADPH-diaphorase), it is found in the human, macaque, rat ( Carrive-2012 ), and mouse ( Franklin-2008 ). It stains heavily compared to the dorsomedial periaqueductal gray column medial to it and similarly to the heavily stained lateral periaqueductal gray column and ventrolateral periaqueductal gray column ventral to it.
Functionally all of the columns belong to the motor periaqueductal gray of the behavior control column in the cerebrospinal trunk ( Swanson-2004 ). For other components of the motor periaqueductal gray click below: Models Where It Appears > Functional CNS Model - Rat.
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