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on early blind patients and observed gray matter atrophy in the left lateral calcarine cortices [1], which is similar to our findings.
In the past, the different direction of the occipital epileptic patterns was classically related to the spatial relationship with the calcarine sulcus.
Compared with the preoperative counterparts, the PA patients with improved visual results after the operation exhibited reduced ReHo in spots of the bilateral thalamus, globus pallidus, caudate nucleus, putamen nucleus, supplementary motor area, and left hippocampal formation, and increased ReHo in the bilateral cuneus gyrus, calcarine gyrus, right lingual gyrus, and fusiform gyrus [Figure 1].{Figure 1}
The axial planes were orthogonal to both the sagittal and the coronal planes and allowed the identification of the central sulcus, postcentral gyrus, sylvian sulcus, frontal and parietal operculum, calcarine fissure, and primary visual cortex (VI).
MRI revealed a linear hyperintense signal involving bilaterally the parietooccipital and calcarine sulci (Figure 1).
Kashiwagi, "Braille alexia during visual hallucination in a blind man with selective calcarine atrophy," Psychiatry and Clinical Neurosciences, vol.
The typical MRI lesions are symmetrical white matter vasogenic edema, usually located parieto-occipital region sparing calcarine and paramedian regions, which may show progression to cytotoxic edema, infarctions, hemorrhages, laminar necroses and glioses (2).
Finally, the real-face and face-pareidolia paradigms were presented to obtain functional data using a gradient echo sequence with predominantly T2 images with the following parameters: this sequence: voxel size: 3 x 3 x 3 mm3; TR = 2000 ms; TE = 40 ms; FA = 710; FOV = 192 x 192 mm2; phase direction: parallel to calcarine sulcus; and number of slices: 26.
Decreased gray matter volume in the left hippocampus and bilateral calcarine cortex in coal mine flood disaster survivors with recent onset PTSD.
The optic nerve passing optic canal ran from the eyeball to the optic chiasm; the optic tract ran from the optic chiasm to the lateral geniculate nucleus; the optic radiation ran from the lateral geniculate nucleus to the calcarine sulcus (Fig.
As for ReHo, increased ReHo was observed in the left cerebellum anterior lobe (CAL) and right calcarine, while it was decreased in the left dorsolateral superior frontal gyrus (SFG), the left precuneus/posterior cingulate cortex (PCu/PCC), the left triangular part of inferior frontal gyrus, the and middle frontal gyrus (IFGtri/MFG).
Weakened brain regions were mainly located in the occipital cortex, including the left calcarine sulcus (CAL.L), left middle occipital gyrus (MOG.L), parietal cortex left postcentral gyrus (PoCG.L), and right inferior parietal lobule (IPL.R).