I've repeatedly taken a

"who cares" approach to debate about the human VNO. Two new articles address the facts (although they use different

terminology for the biological core of mammalian reproductive sexual behavior): GnRH/LHRH, which is directly

affected by pheromonal input, and results in a change in luteinizing hormone levels.

Yoon H, Enquist LW,

Dulac C.
Olfactory Inputs to Hypothalamic Neurons Controlling Reproduction and

Fertility.
http://www.ncbi.nlm.nih.gov/entrez/q...037&query_hl=3

"... in contrast to established notions on the nature of LHRH neuronal inputs, our

data identify major olfactory projection pathways originating from a discrete population of olfactory sensory

neurons but fail to document any synaptic connectivity with the vomeronasal system."

Boehm U, Zou Z, Buck

LB.
Feedback Loops Link Odor and Pheromone Signaling with Reproduction. Cell. 2005



http://www.ncbi.nlm.nih.gov/entrez/q... /> uery_hl=3

"...these experiments indicate that GnRH neurons receive pheromone signals from both odor and

pheromone relays in the brain and may also receive common odor

signals."

JVK