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Mammillary bodies, and their projections to the anterior thalamus via the mammillothalamic tract, are important for recollective memory. [7] According to studies of rats with mammillary body lesions, damage to the medial mammillary nucleus lead to spatial memory deficits.
The mammillary bodies directly or indirectly connect to the amygdala, hippocampus, and thalami as major structures in the limbic system. [6] The mammillothalamic tract carries signals from the mammillary bodies via the anterior thalamus to support spatial memory .
However, although the hypothalamus projects to both the mammillary bodies and the anterior nuclei of the thalamus, the anterior nuclei receive input from hippocampal cells deep to the pyramidal cells projecting to the mammillary bodies. [2] These nuclei are considered to be association nuclei, one of the three broader subdivisions of thalamic ...
The limbic system is involved in lower order emotional processing of input from sensory systems and consists of the amygdala, mammillary bodies, stria medullaris, central gray and dorsal and ventral nuclei of Gudden. [3]
The mammillary bodies are an important part of the Papez circuit. If there is damage, such as loss of neurons and/or myelination, to the mammillary bodies, the Papez circuit can be severely affected. There will be a disruption in the connecting parts of the system.
Mammillary nuclei (part of mammillary bodies) Posterior nucleus; Lateral area Posterior part of Lateral nucleus; Surface Median eminence; Mammillary bodies; Pituitary stalk (infundibulum) Optic chiasm; Subfornical organ; Periventricular nucleus; Tuber cinereum. Tuberal nucleus; Tuberomammillary nucleus; Tuberal region; Mammillary nucleus
The tuber cinereum is a convex mass of grey matter, [3]: 495 a ventral/inferior distention of the hypothalamus forming the floor of the third ventricle. [citation needed] The portion of the tuber cinerum at the base of the infundibulum (pituitary stalk) is the median eminence; [2] the infundibulum extends ventrally/inferiorly from the median eminence to become continuous with the infundibulum.
The bundles of fibers come together in the midline of the brain, forming the body of the fornix. The lower edge of the septum pellucidum (the membrane that separates the lateral ventricles) is attached to the upper face of the fornix body. The body of the fornix travels anteriorly and divides again near the anterior commissure. The left and ...