Limbic System – Hippocampus and Amygdala Prof. K. Sivapalan.

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Limbic System – Hippocampus and Amygdala Prof. K. Sivapalan

Hippocampus Hippocampus forms the floor of the lateral ventricles. It abuts the amygdaloid nucleus anteriorly It fuses with parahippocampus laterally which is the ventromedial portion of the temporal lobe. Hippocampus forms the floor of the lateral ventricles. It abuts the amygdaloid nucleus anteriorly It fuses with parahippocampus laterally which is the ventromedial portion of the temporal lobe. Hippocampus and Amygdala 2

Connections Connects with amygdala, hypothalamus, septum, and mammillary bodies. All sensory inputs stimulate hippocampus which sends impulse to other parts through fornix. Connects with amygdala, hypothalamus, septum, and mammillary bodies. All sensory inputs stimulate hippocampus which sends impulse to other parts through fornix. Hippocampus and Amygdala 3

Function of the Hippocampus. Hippocampus and Amygdala4

Amygdala It is located below the medial anterior pole of each temporal lobes. Connected to hypothalamus and the rest of the limbic system. One division of olfactory tract ends in amygdala. It is located below the medial anterior pole of each temporal lobes. Connected to hypothalamus and the rest of the limbic system. One division of olfactory tract ends in amygdala. Hippocampus and Amygdala 5

Connections Input from all parts of limbic cortex, temporal, parietal and occipital cortices, especially auditary and visual association areas. Output to all cortical areas, hippocampus, septum, thalamus, and especially to hypothalamus. Input from all parts of limbic cortex, temporal, parietal and occipital cortices, especially auditary and visual association areas. Output to all cortical areas, hippocampus, septum, thalamus, and especially to hypothalamus. Hippocampus and Amygdala 6

Autonomic Effects of Stimulation of Amygdala Hippocampus and Amygdala7

Other Effects of Stimulation of Amygdala Hippocampus and Amygdala8

Bilateral Ablation of Amygdala Hippocampus and Amygdala9

Correlation Between Neocortex and Limbic System. Hippocampus and Amygdala10

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