gyrus

(redirected from orbital gyrus)
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gyrus

[′jī·rəs]
(anatomy)
One of the convolutions (ridges) on the surface of the cerebrum.
References in periodicals archive ?
Since all of the obsessive-compulsivesubjects were right-handed, says Baxter, it appears that activity in the dominant-hemisphere orbital gyrus is most affected.
Baxter and his colleagues propose that dominant-hemisphere activity in the orbital gyrus may increase beyond the capacity of the caudate nuclei to integrate the information relayed its way.
In these scans, it increases markedly in the left-hemisphere orbital gyrus and caudate nuclei of an obsessive-compulsive whose symptoms improved with drug treatment.