Furthermore, the TH cells of the periventricular pre-optic area are colocalized with GnRH and thought to be involved in reproductive physiology [ 42].
Hen-reared chicks showed more vasotocin -positive neurons in the medial pre-optic area compared to the hens raised without a hen.
He noted that lesions of the posterior hypothalamus and rostral midbrain led to a state of prolonged sleepiness, while lesions of the pre-optic area and basal forebrain led to prolonged insomnia.
The size of the sexually dimorphic nucleus of the pre-optic area (SDN) of the brain is larger in males than females and this is largely associated with sexual partner preference [ 18].
A reference temperature (set point) generated by a network of warm, cold, and thermal insensitive neurons in the pre-optic area is compared with feedback from the skin and core thermoreceptors.
Dexmedetomidine selectively targets pre-synaptic α2-adrenergic receptors on neurons projecting from the locus ceruleus to the pre-optic area (Correa-Sales et al., 1992; Chiu et al., 1995; Mizobe et al., 1996).
The chickens raised with a mother hen also tended to have more AVT-ir cells in the lateral pre-optic area of the hypothalamus (LPO) compared to the chickens raised without a hen (F1,24 = 4.25, p = 0.05).
Anti-GFP immunohistochemistry on sections of transgenic embryos confirmed that the prethalamus expression was completely absent from Tg-CmURE2 embryos, while expression in the pre-optic area is comparable between Tg-CmURE2 and Tg-DrURE2.
RFRP projects to multiple brain regions responsible for successful reproduction and mating behavior, including the medial pre-optic area (mPOA) (where it is known to affect GnRH release) as well as the BNST, medial amygdala, anterior hypothalamus, and arcuate nucleus (Kriegsfeld et al., 2006).
