opercular part

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o·per·cu·lar part

one of the three small cortical convolutions together forming a cover for the insular region. Opercular convolutions are frontal, temporal, and parietal.
Synonym(s): pars opercularis [TA]
Farlex Partner Medical Dictionary © Farlex 2012
References in periodicals archive ?
However, sleep disturbance was associated with increased thickness in the right postcentral gyrus, pericalcarine, and pars opercularis, as well as increased volume of the hippocampus and amygdala.
11 patients undergoing MIT showed an increase in RH white matter volume and a correlation of behavioral improvement with changes in the right IFG pars opercularis [44].
We selected anatomical ROIs in bilateral frontal areas: inferior frontal gyrus (IFG) pars opercularis (Operc), pars triangularis (Tri), and pars orbitalis (Orb); precentral gyrus (PreC), insula, and supplementary motor area (SMA).
Traditionally, it has been accepted that speech production is controlled by the so-called Broca's area corresponding to Brodmann's area (BA) 44 (pars opercularis of the left inferior frontal gyrus) (e.g., Goldstein, 1948; Damasio & Geschwind, 1984; Head, 1926; Hecaen, 1972; Luria, 1947/1970).
In a surgical procedure which lasted two hours and a half, he resected 2.5 grams of cortex, excising both pars opercularis and pars triangularis of the inferior frontal gyrus of the left hemisphere.
The researchers found that an area of the brain known as the left pars opercularis - part of the Broca's area, a region of the brain involved in speech production but also in analysing and separating speech sounds - correlated with the amount of training in transcription that a phonetician had undergone.
(11) IFG oper r (inferior frontal gyrus, pars opercularis right)
Time-frequency analyses showed a left-lateralized inferior frontal gyrus (pars opercularis) response to words between 100-250 ms in the beta frequency band that was significantly stronger than the response to consonant strings or faces.
For participants with right hemisphere stroke, LI values were as follows: inferior frontal gyrus pars opercularis (LI = 0.33, SEM = 0.17), pars triangularis (LI = 0.16, SEM = 0.19), precentral gyrus (LI = 0.22, SEM = 0.09), and supramarginal gyrus (LI = 0.40, SE M = 0.08).

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