Anterior Commissure (Commissura anterior)
Educational content only — not medical advice.
Anatomy
The anterior commissure is a compact bundle of myelinated nerve fibers crossing the median plane in the upper anterior wall of the third ventricle, immediately rostral to the columns of the fornix. It interconnects the middle and inferior temporal gyri, olfactory structures, and amygdaloid nuclear complexes across the hemispheres.
Clinical notes
Serves as an indispensable stereotactic anatomical landmark (AC) for defining the anterior-posterior commissural line (AC-PC line) in neurosurgical planning, deep brain stimulation (DBS), and functional neuroimaging.
Related structures
Educational references
FAQ
What is the role of the Anterior Commissure?
The anterior commissure is a compact bundle of myelinated nerve fibers crossing the median plane in the upper anterior wall of the third ventricle, immediately rostral to the columns of the fornix. It interconnects the middle and inferior temporal gyri, olfactory structures, and amygdaloid nuclear complexes across the hemispheres.
Why is the Anterior Commissure clinically important?
Serves as an indispensable stereotactic anatomical landmark (AC) for defining the anterior-posterior commissural line (AC-PC line) in neurosurgical planning, deep brain stimulation (DBS), and functional neuroimaging.
Source & license
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