Brain regions and genes affecting limb-clasping responses.

Abstract excerpt

Adult rodents picked up by the tail and slowly descending towards a horizontal surface extend all four limbs in anticipation of contact. Mouse mutants with pathologies in various brain regions and the spinal cord display instead a flexion response, often characterized by paw-clasping and a bat-like posture. These phenotypes are observed in mice with lesions in cerebellum, basal ganglia, and neocortex, as well as...

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