Terminology
- Aka: Stria terminalis
General
- C-shaped trajectory
- The stria terminalis is similar in form, function, and location as the fornix for the hippocampal pathway.
- Thus by way of analogy one can say that the stria terminalis is to the amygdala as the fornix is to the hippocampus.
- As with the fornix, some fibers enter anterior commissure cross to the contralateral side. Just as in the case of the two hippocampi communicating with each other through the anterior commissure, the two amygdala communicate with each other through the anterior commissure.
Connects
- Begins in the amygdaloid complex → runs backwards medial → caudate nucleus
- Terminates in the bed nucleus of the stria terminalis
- Located lateral to the column of the fornix and dorsal to the anterior commissure
- connects amygdaloid nucleus to:
- Septal area
- Hypothalamus
- Habenular nuclei, through the stria medullaris thalami
Location
- At the stria-thalamic sulcus
- Between the
- Thalamus
- Caudate nucleus
- A fibre tract that runs parallel and deep to the thalamostriate vein
Two parts (like the fornix)
- Precommissural branches
- Before the anterior commissure
- The precommissural branch goes to the septal area.
- This is exactly what the fornix does.
- Postcommissural branches
- After the anterior commissure.
- The postcommissural branch goes to the hypothalamus (lateral nucleus and ventral-medial nucleus of the hypothalamus)
- This is exactly what the fornix does (Mamillary bodies)
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