HOME >> BIOLOGY >> NEWS
Neural biology explains ejaculation

How does the body know it has had an ejaculation? And why does it care? Anatomically, it is more complex than it seems, says the University of Cincinnati scientist who last year identified the spinal cord cells that control ejaculation in rats and the neural pathway by which signals travel between the body's sexual organs to the brain.

At the Experimental Biology 2003 meeting in San Diego, Dr. Lique Coolen reviews work her laboratory has done in understanding ejaculation and then discusses her current work in how chemical signals on this pathway contribute to pleasure and reward, key elements in sexual behavior. Dr. Coolen is this year's recipient of the American Association of Anatomists' C. J. Herrick Award in Comparative Neuroanatomy.

Scientists had known for years that there must be a group of cells in the spinal center that control ejaculation. Following spinal cord injury that prevents sensation from reaching the brain, humans and other animals remain able to achieve erection and ejaculation upon stimulation. But the location of this spinal ejaculation generator remained a mystery until last August when Dr. Coolen and a postdoctoral fellow in her laboratory, Dr. William Truitt, reported their findings in Science. Dr. Coolen had targeted the lumbar spinothalamic neurons in the lower back because these neurons appeared active only after ejaculation and not during sexual arousal or mounting. When the researchers used a highly selective toxin to destroy the thalamic neurons in adult male rats, the rats appeared not to notice. They continued their sexual interest and behavior, including penetration of the female. But they no longer had ejaculations, confirming that these were the cells the researchers had been hunting.

With the ejaculation machinery identified as being part of the spinal cord, Dr. Coolen then turned her interest to the neural pathway that relayed ejaculation-related signs from the reproductive system to t
'"/>

Contact: Sarah Goodwin
eb3press@bellsouth.net
770-270-0989
Federation of American Societies for Experimental Biology
12-Apr-2003


Page: 1 2

Related biology news :

1. Neural stem cells take a step closer to the clinic
2. Neural development in time and space
3. Neural signal that helps wire up brains movement circuit identified
4. Neural stem cells can develop into functional neurons
5. Neural stem cells move to damaged areas of brain after injury
6. Human Neural Stem Cells Advance Distant Prospect Of Reseeding Damaged Brain
7. Cultured Neural Stem Cells Reduce Symptoms In Model Of Parkinsons Disease
8. Scientists Discover How Genes Work Together To Control Neural Development
9. Medicinal Leech May Offer Clues To Neural Regeneration
10. Tips from the Journals of the American Society for Microbiology
11. NSF announces six FIBR awards to tackle some of biologys most challenging questions

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:8/5/2020)... ... , ... Regenative Labs has received approval from the Centers for Medicare & ... first Wharton’s jelly allografts to be assigned a Q code and be approved for ... Wharton’s jelly allograft product to be recognized as a 361 HCT/P by CMS regulated ...
(Date:7/18/2020)... ... July 16, 2020 , ... A study has been published ... Neoasis™ active noise control device to attenuate typical noises in a simulated neonatal ... the alarm sounds from patient monitors, ventilators and other bedside devices that would ...
(Date:7/2/2020)... ... July 01, 2020 , ... AltruBio Inc. http://www.altrubio.com ... a biologic for the treatment of steroid-refractory acute graft-versus-host disease (SR-aGVHD), at European ... J Martin of the Fred Hutchinson Cancer Research Center, this single-arm, open-label Phase ...
Breaking Biology News(10 mins):
(Date:8/12/2020)... FARMS, Mich. (PRWEB) , ... August 12, 2020 ... ... Consulting Group, Inc. (EMMA International), a global leader in FDA compliance consulting ... of the nation’s fastest-growing private companies. The list represents a unique look at ...
(Date:8/3/2020)... (PRWEB) , ... August 03, 2020 , ... ... collection, today announced Jim Corrigan, President and CEO has been named one of ... broad cross-section of industry sectors, PharmaVoice 100 honorees are selected based on how ...
(Date:7/31/2020)... ... July 29, 2020 , ... R3 Stem Cell International is ... $3950. With 50 million stem cells total, patients may choose which extremities they would ... for arthritic joints (BMC Musculoskelet Disord. 2016). At R3 International, umbilical cord tissue is ...
(Date:7/31/2020)... ... July 29, 2020 , ... ... transmitter systems that can be configured to drive Klystrons, TWTs, IOTs, and magnetrons. ... drive one or two switches in a push-pull configuration; yielding fast fall time ...
Breaking Biology Technology:
Cached News: