The stría terminalis is a bundle of nerve fibres that originates from the almond nucleus (amygdala ) and initially runs backwards into the roof of the lower (temporal) horn of the lateral ventricle alongside the narrow tail of the caudal nucleus . The stria terminalis then folds around the posterior part of the visual mound (thalamus) - pulvinar - together with the tail nucleus, pulls away forward, forming a slightly more mm-thick clearly visible strand on the inside of the tail nucleus in the floor of the central part of the lateral ventricle. This is the central part of the final streak.
Once at the anterior transverse connection (commissura anterior), most of the threads cross and past the commissura anterior and end in the septal region, in the anterior part of the hypothalamus and in the lamina terminalis ( i.e. the front wall of the 3rd ventricle) so-called webbed nucleus (nucleus interstitialis laminae terminalis) . Some filaments connect to the commissura anterior and thus cross over to the amygdala on the opposite side. In this way, the amygdala nuclei of the two sides will be directly linked to each other. Both the septal region, the bed nucleus, and the amygdala of the opposite side transmit threads back into the stria terminalis.
After the filament exchange with the different nuclei, the stria turns around the anterior pole of the thalamus at the bottom of the ventricular interlude and then continues backwards, now under the name of the marrow streak of the visual mound (stria medullaris thalami), along the thalamus and away to the reins (habenula) and the pineal gland where the nerve fibers end.
Stria terminalis is usually included in the limbic system.