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:5/16/2017)... 16, 2017   Bridge Patient Portal , ... MD EMR Systems , an electronic medical ... GE, have established a partnership to build an ... the GE Centricity™ products, including Centricity Practice Solution ... These new integrations will allow healthcare delivery ...
(Date:4/19/2017)... , April 19, 2017 ... its vendor landscape is marked by the presence of ... is however held by five major players - 3M ... these companies accounted for nearly 61% of the global ... leading companies in the global military biometrics market boast ...
(Date:4/13/2017)... , April 13, 2017 UBM,s Advanced Design ... will feature emerging and evolving technology through its ... Summits will run alongside the expo portion of the ... panels and demonstrations focused on trending topics within 3D ... design and manufacturing event will take place June 13-15, 2017 ...
Breaking Biology News(10 mins):
(Date:6/22/2017)... ... June 22, 2017 , ... The first human cell line HeLa, established ... first data on cross-contamination of human cell lines with HeLa cells were published. Until ... cell culture labs and is associated with dramatic consequences for research. , In ...
(Date:6/20/2017)... Iowa (PRWEB) , ... June 20, 2017 , ... ... chance to immediately determine the adulterants which pose the most likely threat to ... - 28 of this year. , IFT's annual food expo attracts over ...
(Date:6/19/2017)... ... June 19, 2017 , ... As Vice President, ... products including training, implementation, support, and client process and SOP development. , Mr. ... previously held leadership roles for service providers and top-tier pharmaceuticals, and as an ...
(Date:6/16/2017)... ... June 16, 2017 , ... ... today announced that its Anzo Smart Data Lake® (Anzo SDL) solution was ... for the 2017 Software & Information Industry Association (SIIA) CODiE Awards. , ...
Breaking Biology Technology:
Cached News: