uncinate fasciculus


un·ci·form fas·cic·u·lus

, uncinate fasciculus [TA] a band of long association fibers reciprocally connecting the frontal and temporal lobes of the cerebrum, running caudally through the white matter of the frontal lobe, sharply curving anterolaterally under the stem of the sylvian fissure, and then fanning out to the cortex of the anterior half of the superior and middle temporal gyri. Synonym(s): fasciculus uncinatus [TA], arcuate fasciculus (2) , frontotemporal tract, hooked fasciculus, temporofrontal tract

un·ci·form fas·cic·u·lus

, uncinate fasciculus (ŭn'si-fōrm fă-sik'kyū-lŭs, ŭn'si-nāt) [TA] A band of long association fibers reciprocally connecting the frontal and temporal lobes of the cerebrum, running caudally through the white matter of the frontal lobe, sharply curving ventrally under the stem of the sylvian fissure, and then fanning out to the cortex of the anterior half of the superior and middle temporal gyri.

uncinate fasciculus

A compact, myelinated axon tract lying under the cerebral cortex. It is a long association tract that interconnects the frontal association cortex of the frontal lobe with the inferior temporal association cortex of the ipsilateral temporal lobe. See also: fasciculus