The MRI revealed marked bilateral hyperintense lesions in medial thalami, and mild hyperintense lesions in the mammillary bodies
and periaqueductal region in FLAIR, T2 and DWI sequences (Fig.
Specifically, the optic tectum, the inner cellular layer of olfactory bulbs, the periventricular pretectal nucleus, and the mammillary bodies
Central incisural herniation affects the mammillary bodies
and the tuber cinereum differently.
Although our patient had some anatomic distortions, the location of the mammillary bodies
was such that we could position our ETV just posterior to the dorsum sella.
A high cross-correlation was found between prelimbic cortex and infralimbic cortex (r = -.97, p < .001), between mediodorsal thalamus and dentate gyrus of the ventral hippocampus (r = .85, p = .01), between the medial lateral area and the medial area of the mammillary bodies
(r = .96, p < .001), as well as between medial area of the mammillary bodies
and dentate gyrus of the ventral hippocampus (r = - .86, p = .01) (Figure 1, Solid and dotted lines represent, respectively, highly positive and negative pair-wise Pearson's correlations [r > .8, p [less than or equal to] .02]).
This study highlights the importance of axonal connectivity for cognitive processes and suggests that impaired memory processing may impact other brain areas such as the mammillary bodies
and septal nuclei via fornix connectivity.
Hypothalamus The ventral and medial portion of the diencephalons, which forming the walls of the third ventricle and lying between the optic chiasm (anterior limit) and mammillary bodies
Obstructive sleep apnea, a condition in which you stop breathing periodically throughout the night, may affect your memory by depriving one brain structure, the mammillary bodies
which assist in forming memories of a steady flow of oxygen.
The other study, published June 27 in Neuroscience Letters, found that sleep apnea (short interruptions of breathing during sleep) causes tissue loss in brain areas known as mammillary bodies
, which help store memory.
The authors believe that lack of oxygen associated with sleep apnea may cause brain cell death in the mammillary bodies
, leading to long-lasting brain memory impairments.
* MRI shows atrophied mammillary bodies
, fornix, and corpus callosum.