Thalamus: Afferent Projections

1. Thalamus
2. Thalamus: Afferent Projections

Shown in the figure below are afferent projections to thalamus sections. The anterior nuclei takes inputs from mammiliary body and relay them to cingulate gyrus (limbic lobe) which tract associated with emotion, memory, and motivation. The fornix from hippocampus via fimbra, sending collaterals to anterior thalamus, bifurcates into pre/postcommissural fibers which reaches at septal nuclei and mammillary body, respectively. The induseum griseum ("enveloping gray", supracallosal gyrus) connects septal nuclei to hippocampus.

Afferent to VL from cerebellum is linked to the primary somatosensory cortex. The basal ganglia sends its projections to premotor cortex via VA. The LP connects primary visual cortex(V1) to association visual cortex. The VPL sends information from oral and nasal cavities to S1, VPM from extremities and truck to S1. The DM receives fibers from hypothalamus and prefrontal cortex. The LD connects parietal cortex projections to cingulate gyrus as well as the projections within the cingulate gyrus.