MedicineWorld.Org
Your gateway to the world of medicine
Home
News
Cancer News
About Us
Cancer
Health Professionals
Patients and public
Contact Us
Disclaimer

Medicineworld.org: Maybe it's the wrong time of month

Back to psychology news Blogs list Cancer blog  


Subscribe To Psychology News RSS Feed  RSS content feed What is RSS feed?

Maybe it's the wrong time of month




Feeling a little sluggish and having trouble concentrating? Hormones might be to blame as per new research from Concordia University reported in the journal Brain and Cognition The study shows that high estrogen levels are linked to an inability to pay attention and learn the first such paper to report how this impediment can be due to a direct effect of the hormone on mature brain structures.

"Eventhough estrogen is known to play a significant role in learning and memory, there has been no clear consensus on its effect," says senior author Wayne Brake, an associate professor at Concordia's Center for Studies in Behavioural Neurobiology. "Our findings, using a well-established model of learning called latent inhibition, shows conclusively that high estrogen levels inhibit the cognitive ability in female rodents".



Maybe it's the wrong time of month

Human females have high estrogen levels while they are ovulating. These high levels have also been shown to interfere with women's ability to pay attention.

"The similarity between human studies and our findings suggest that we have a good model for human learning," says first author Matthew Quinlan, a former Concordia doctoral student now a lecturer at California State University San Bernadino. "Rodent research is invaluable to us. We can tease out the real contributors and their respective roles in these systems. It is much more difficult to conduct comparable experiments in humans".


Latent inhibition: A model of learning

Latent inhibition is observed in a number of species and is thought to bethe important part of learning, which enables individuals to interact successfully in their environment. It is a test of new memory formation.

In the Brake protocol, rats received a pre-exposure phase during which they were repeatedly exposed to a tone, with no consequence. Once they became used to this tone and ignored it, the test dynamics changed and another stimulus was associated with the tone. Rats with low levels of estrogen quickly learned that the tone was linked to the new stimulus whereas those with higher levels of estrogen took longer to form this memory.

"We only observed this effect in adult female rats," says Brake. "This and our other findings indicate that estrogen directly effects the brain, perhaps by interfering with brain signaling molecules. Our study helps clear up the controversy about the effects of estrogen, the next step is to look at how this occurs".


Posted by: JoAnn    Source




Did you know?
Feeling a little sluggish and having trouble concentrating? Hormones might be to blame as per new research from Concordia University reported in the journal Brain and Cognition The study shows that high estrogen levels are linked to an inability to pay attention and learn the first such paper to report how this impediment can be due to a direct effect of the hormone on mature brain structures.

Medicineworld.org: Maybe it's the wrong time of month

Acute bacterial meningitis| Alzheimer's disease| Carpal tunnel syndrome| Cerebral aneurysms| Cerebral palsy| Chronic fatigue syndrome| Cluster headache| Dementia| Epilepsy seizure disorders| Febrile seizures| Guillain barre syndrome| Head injury| Hydrocephalus| Neurology| Insomnia| Low backache| Mental retardation| Migraine headaches| Multiple sclerosis| Myasthenia gravis| Neurological manifestations of aids| Parkinsonism parkinson's disease| Personality disorders| Sleep disorders insomnia| Syncope| Trigeminal neuralgia| Vertigo|

Copyright statement
The contents of this web page are protected. Legal action may follow for reproduction of materials without permission.