HOME >> BIOLOGY >> NEWS
Brain neurochemicals, not gender, tell a female to act like a female

ITHACA, N.Y. -- Cornell University biologists have shown how chemicals produced in a core region of the brain shared by all vertebrate animals (including humans) make males act like males, females like females -- and some males something like females.

James Goodson and Andrew Bass, who studied a fish species that produces two types of males for their report in the Feb. 17, 2000, issue of the journal Nature, say that brain processes responsible for social behavior typical of females, for example, aren't necessarily linked to the female's sex at all.

"This is a clear demonstration of how the action of neurochemicals can modulate the electrical or neurophysiological output of the brain as it establishes a social behavior," said Bass, professor of neurobiology and behavior, in an interview.

"We have also shown that there can be a neurochemical dissociation -- an uncoupling -- between an animal's gonadal sex and the regulation of behaviors typical of a sex," said Goodson, a postdoctoral fellow in Bass' neurobiology laboratory.

The part of the brain studied by Goodson and Bass is the preoptic area-anterior hypothalamus, a section of the basal forebrain, which neurobiologists say has been "conserved" throughout the evolution of vertebrates. The functions and structure of this conserved brain region are strikingly similar in fish, amphibians, reptiles, birds and mammals, including humans. The neurochemicals credited with sex-related social behaviors are isotocin and vasotocin in fish and are essentially the equivalents of oxytocin and vasopressin, respectively, in mammals.

The fish that made the neurochemical finding possible is the plainfin midshipman (Porichthys notatus), best known for its singing in shallow salt water at mating time. Most of the noise comes from male midshipman fish of the type I variety, which vocalize for hours under rocks to attract females. When type I males' courtship songs are successful, female
'"/>

Contact: Roger Segelken
hrs2@cornell.edu
607-255-9736
Cornell University News Service
15-Feb-2000


Page: 1 2 3 4

Related biology news :

1. Brain has center for detecting sound motion
2. Brains reward circuitry revealed in procrastinating primates
3. Brain serotonin enzyme finding might explain psychiatric disorders
4. Brain development and puberty may be key factors in learning disorders
5. Organization for Human Brain Mapping 2004 Annual Meeting
6. Brain disease research, particle physics meet in the middle (ware)
7. Brain control
8. Brain cells become more discriminating when they work together
9. Brain signal predicts working memory prowess
10. Brain areas identified that decode emotions of others
11. Brain Centre gives Wales a world lead

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


(Date:5/16/2016)... YORK , May 16, 2016   EyeLock ... solutions, today announced the opening of an IoT Center ... to strengthen and expand the development of embedded iris ... an unprecedented level of convenience and security with unmatched ... authenticate one,s identity aside from DNA. EyeLock,s platform uses ...
(Date:5/3/2016)...  Neurotechnology, a provider of high-precision biometric identification ... Identification System (ABIS) , a complete system for ... can process multiple complex biometric transactions with high ... face or iris biometrics. It leverages the core ... MegaMatcher Accelerator , which have been used in ...
(Date:4/26/2016)... LONDON , April 26, 2016 ... a product subsidiary of Infosys (NYSE: ... to integrate the Onegini mobile security platform with ... http://photos.prnewswire.com/prnh/20151104/283829LOGO ) The integration will ... to access and transact across channels. Using this ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... SPRING, Md. , June 23, 2016 A ... collected from the crime scene to track the criminal down. ... and the U.S. Food and Drug Administration (FDA) uses DNA ... Sound far-fetched? It,s not. The ... genome sequencing to support investigations of foodborne illnesses. Put as ...
(Date:6/23/2016)... -- The Biodesign Challenge (BDC), a university competition that asks ... systems and biotechnology, announced its winning teams at the ... York City . The teams, chosen ... MoMA,s Celeste Bartos Theater during the daylong summit. Keynote ... of architecture and design, and Suzanne Lee , ...
(Date:6/23/2016)... ... ... In a new case report published today in STEM CELLS Translational Medicine, ... after being treated for breast cancer benefitted from an injection of stem cells derived ... debilitating, frequent side effect of cancer treatment. , Lymphedema refers to the ...
(Date:6/23/2016)... June 23, 2016 On Wednesday, June ... 4,833.32, down 0.22%; the Dow Jones Industrial Average edged 0.27% ... at 2,085.45, down 0.17%. Stock-Callers.com has initiated coverage on the ... Nektar Therapeutics (NASDAQ: NKTR ), Aralez Pharmaceuticals Inc. ... BIND ). Learn more about these stocks by ...
Breaking Biology Technology:
Cached News: