The retinohypothalamic tracts leave the optic chiasm and project to the adjacent suprachiasmatic nuclei (SCN).
The suprachiasmatic nucleus (SCN) is a bilateral structure located in the anterior part of the hypothalamus.
It is the central pacemaker of the circadian timing system and regulates most circadian rhythms in the body.
The SCN receives input from specialized photosensitive ganglion cells in the retina via the retinohypothalamic tract.
Learn more about SCN here:
