superior frontal gyrus


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Related to superior frontal gyrus: frontal sulcus, Middle frontal gyrus

su·pe·ri·or fron·tal gy·rus

[TA]
a broad convolution running in an anteroposterior direction on the medial edge of the convex surface and wrapping over onto the medial surface of each frontal lobe, where it becomes the medial frontal gyrus.

su·pe·ri·or fron·tal gyrus

(sŭ-pēr'ē-ŏr frŏnt'ăl jī'rŭs) [TA]
A broad convolution running in an anteroposterior direction on the medial edge of the convex surface and of each frontal lobe.

superior frontal gyrus

The superior-most gyrus of the three major longitudinal gyri of the lateral surface of the frontal lobe of each cerebral hemisphere; it is part of the prefrontal cortex.
See also: gyrus
References in periodicals archive ?
Consistent with previous studies, these regions included the bilateral temporal pole: the middle temporal gyrus; the left superior frontal gyrus, orbital part; the right lateral dorsolateral frontal gyrus; the left thalamus; the right putamen; the left lingual gyrus; the right cuneus; and the left posterior cingulate gyrus.
(2) Hoffman auditory hallucination score was negatively correlated with the DC of the bilateral putamen, but positively correlated with the DC of the left superior frontal gyrus in patient with AH group [Figure 2].{Table 4}{Figure 2}
In the dorsolateral region of the left superior frontal gyrus, in one cluster, the investigators also found significantly increased connectivity (cluster size 673 voxels; P = .0004) among the subjects with bipolar disorder, compared with controls.
Both groups recruited a left frontoparietal network including lateral prefrontal cortex (BA46), superior frontal gyrus (BAs 8 and 6), premotor and supplementary motor cortex (BA6) and parietal areas (BAs 7 and 40).
[55] More recently, researchers used the amplitude of low frequency fluctuations (ALFF) to evaluate resting-state brain functions and found that among individuals with schizophrenia the ALFF was elevated in the right corpus callosum, occipital lobes, left cerebellar lobe, superior frontal gyrus and precuneus, and the ALFF was decreased in the bilateral postcentral gyrus and left precuneus.
The activation was observed at the bilateral orbital frontal cortex, the bilateral or left superior frontal gyrus, and the right superior temporal gyrus (Tables 4-6, Figures 6-8).
Another study [53] investigating the association between angiotensin-converting enzyme (ACE) insertion/deletion polymorphisms and cognitive functioning among patients with LOD found that, compared to the I-allele, the D-allele was associated with significantly smaller volumes of white matter in the superior frontal gyrus and anterior cingulated gyrus, and with significantly larger volumes in the middle temporal gyrus and middle occipital gyrus.
DAN is thought to mediate goal-directed top-down processing [25] and primarily involves the middle and superior occipital gyrus, parietal gyrus, inferior, superior parietal gyrus, middle frontal gyrus, and superior frontal gyrus. Zhang et al.
All cortical regions were smaller in the ADHD adults, but only the frontal lobe and medial paralimbic areas were significantly smaller, he said, and noted that the most substantial volumetric differences were observed in the ACC and the superior frontal gyrus.
Increased GM volumes in the HG.R, bilateral superior temporal gyri (STG), left middle temporal gyrus (MTG.L), ITG.R, right posterior cingulate gyrus (PCC.R), right central sulcus, right superior frontal gyrus (SFG.R), and IFG.R in musicians compared with those in nonmusicians were also observed in another study [5].
[4] Luo and colleagues [5] reported that patients with OCD had a greater volume of white matter in the right precentral gyrus, the right postcentral gyrus, the bilateral precuneus, and the left middle occipital gyrus than control subjects; they also had a smaller volume of white matter in the bilateral superior frontal gyrus, the left postcentral gyrus, the left parahippocampal gyrus/ corpus callosum, and the right inferior parietal lobule.
And water pictures increased neural activity in the precuneus and left posterior cingulate gyrus in OCD patients, compared with controls, whereas controls showed more activity in the right cingulate gyrus and right superior frontal gyrus. This was indicative of "a more emotionally positive reaction in controls," she said.

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