INAH 3

Interstitial nucleus of the anterior hypothalamus
Anatomical terms of neuroanatomy

INAH-3 is the short form for the third interstitial nucleus of the anterior hypothalamus, and is the sexually dimorphic nucleus of humans. INAH-3 is significantly larger in males than in females regardless of age.[1] One study has shown that INAH-3 is larger in heterosexual males than in homosexual males and heterosexual females, although this data has not been successfully reproduced.[2]

  1. ^ Allen LS; Hines M; Shryne JE; Gorski RA (1989). "Two sexually dimorphic cell groups in the human brain". J Neurosci. 9 (2): 497–506. doi:10.1523/JNEUROSCI.09-02-00497.1989. PMC 6569815. PMID 2918374.
  2. ^ LeVay, S (Aug 30, 1991). "A difference in hypothalamic structure between heterosexual and homosexual men". Science. 253 (5023): 1034–7. Bibcode:1991Sci...253.1034L. doi:10.1126/science.1887219. PMID 1887219. S2CID 1674111.