Navigation Links
Auditory neurons in humans far more sensitive to fine sound frequencies than most mammals
Date:1/10/2008

The human ear is exquisitely tuned to discern different sound frequencies, whether such tones are high or low, near or far. But the ability of our ears pales in comparison to the remarkable knack of single neurons in the brain to distinguish between the very subtlest of sound frequencies.

Reporting in the January 10 issue of the journal Nature, Dr. Itzhak Fried, a professor of neurosurgery and director of the epilepsy surgery program, and colleagues at the Hebrew University in Jerusalem and the Weizmann Institute of Science, show that in humans, a single auditory neuron in the brain exhibits an amazing selectivity to a very narrow sound frequency range, roughly down to a tenth of an octave. In fact, the ability of these neurons to detect the slightest of differences in sound frequencies far exceeds that of the auditory nerve that carries information from the hair cells of the inner ear to the cortex as much as 30 times more sensitivity. Indeed, such frequency tuning in the human auditory cortex is substantially superior to that typically found in the auditory cortex of non-human mammals, with the exception of bats.

It is quite a paradox, the researchers note, in that even musically untrained people can detect very small sound frequency differences, much better than the resolution of the peripheral auditory nerves. This is very different from other peripheral nerves, such as those in the skin, where the human ability to detect differences between two points (say from the prick of a needle) is limited by the receptors in the skin. Not so in hearing.

The researchers, including senior author Israel Nelken and first author Yael Bitterman from the Hebrew University, determined how neurons in the human auditory cortex responded to various sounds by taking recordings from four consenting clinical patients at the UCLA Medical Center. These patients had intractable epilepsy, and were being monitored with intracranial depth electrodes to ident
'/>"/>

Contact: Mark Wheeler
mwheeler@mednet.ucla.edu
310-794-2265
University of California - Los Angeles
Source:Eurekalert

Page: 1 2 3

Related medicine news :

1. Selective attention increases both gain and feature selectivity of the human auditory cortex
2. Loss of gene leads to protein splicing and buildup of toxic proteins in neurons
3. Study suggests loss of 2 types of neurons -- not just 1 -- triggers Parkinsons symptoms
4. Terriers Join Fight Against a Killer Disease in Humans
5. Songbirds offer clues to highly practiced motor skills in humans
6. Blind humans lacking rods and cones retain normal responses to non-visual effects of light
7. Menopause May Be Unique to Humans
8. Chimps Top Humans in Number Recall
9. CDC Reports Prevalence of Worms Transmitted by Dogs and Cats to Humans is Higher Than Previously Understood
10. Modest gain in visceral fat causes dysfunction of blood vessel lining in lean, healthy humans
11. Not just humans benefit from animal biotechnology
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/2/2014)... be a new salve to dominate medicine cabinets of the ... Salamanders may not be the cuddliest of animals, but they ... damaged body parts. Now, a new report published in the ... , identifies a small protein (called a "peptide") from the ... the secret of this amazing wound healing trick in humans. ...
(Date:9/2/2014)... Society of Nuclear Medicine and Molecular Imaging (SNMMI) is ... Wagner-Torizuka Fellowship. This two-year fellowship, founded in 2008 by ... late Kanji Torizuka, MD, PhD, is designed to provide ... medicine and molecular imaging for Japanese physicians in the ... is proud to sponsor the Wagner-Torizuka Fellowship. This program ...
(Date:9/2/2014)... new guideline, the Society for Maternal-Fetal Medicine has recommended ... , "There is no evidence that bed rest ... Center for Maternal and Fetal Medicine and one of ... that bed rest can be harmful for moms, babies, ... are placed on bed rest during their pregnancy. Surveys ...
(Date:9/2/2014)... Vertebral invasive compression fractures called spine ... in our spine suffers crack or gets deformed. Vertebral ... people with osteoporosis or low bone density. Though osteoporosis ... of metastatic tumors and extensive trauma such as an ... also lead to such fractures. , The placement of ...
(Date:9/2/2014)... Sept. 2, 2014 Cancer screening is a critical ... are often more treatable. But while there are already ... there is a great need for even more safe, ... , Now a team of researchers led by Shaoxin ... the potential of a new, non-invasive method to screen ...
Breaking Medicine News(10 mins):Health News:Salamander skin peptide promotes quick and effective wound healing in mice 2Health News:SNMMI 2014-2016 Wagner-Torizuka Fellowship recipients announced 2Health News:SMFM releases paper on activity restriction in pregnancy 2Health News:An Overview of the Minimally Invasive Vertebral Compression Fracture Repair Market by Transparency Market Research 2Health News:An Overview of the Minimally Invasive Vertebral Compression Fracture Repair Market by Transparency Market Research 3Health News:New method for non-invasive prostate cancer screening 2
... Investigacin Oncolgica (GENYO) of which the University of Granada, ... identified the genetic and phenotypic changes that cause tumor ... the main cause of cancer death- is caused by ... relationship with the organ originally affected. For this to ...
... the University of Michigan Health System shows the risk ... following the implementation of Model of End Stage Liver ... how liver transplant allocation is decided. The study, ... in the Department of Internal Medicine, examined the effect ...
... developing disorders like addiction and depression, according to a ... Proceedings of the National Academy of Sciences . ... coauthor of the paper and a professor of neuroscience ... Sciences. She and coauthor David Sturman, a MD/PhD student ...
... Calif. Researchers at the Stanford University School of Medicine ... effectively predict how deadly a cancer will be. The discovery, ... faster, less expensive and more accurate analysis of cancer risk ... published online Jan. 16 in the Proceedings of the ...
... By Steven Reinberg HealthDay Reporter , TUESDAY, ... to help most patients suffering from chronic obstructive pulmonary disease ... Emphysema and chronic bronchitis are the two main forms of ... hard for people to breathe. Since most COPD patients ...
... Mozes HealthDay Reporter , MONDAY, Jan. 16 (HealthDay ... significantly more likely to develop acne than their normal-weight peers, ... weight, and more specifically body mass index (BMI, a ratio ... of the common skin condition among teens. Teens, responses ...
Cached Medicine News:Health News:University of Granada researchers identify changes in tumor cells that lead to metastasis 2Health News:U-M News: Kidney failure risk higher for liver transplant patients following policy change 2Health News:Adolescents' brains respond differently than adults' when anticipating rewards 2Health News:Stanford computer algorithm used to identify bladder cancer marker 2Health News:Stanford computer algorithm used to identify bladder cancer marker 3Health News:Vitamin D Won't Help Most COPD Patients: Study 2Health News:Vitamin D Won't Help Most COPD Patients: Study 3Health News:Overweight Teen Girls May Have Higher Acne Risk 2Health News:Overweight Teen Girls May Have Higher Acne Risk 3
(Date:9/2/2014)... Mast Therapeutics, Inc . (NYSE MKT: MSTX) today announced that the ... at the Rodman and Renshaw 16 th Annual Global Investment ... in the Holmes II Salon at The New York Palace Hotel ... parties can access a live audio webcast and slide presentation on ... presentation will be available on the web site for 30 days. ...
(Date:9/2/2014)... SEATTLE , Sept. 2, 2014 /PRNewswire/ ... company committed to the development and commercialization ... today announced that the U.S. Food and ... designation to the investigation of motolimod (VTX-2337) ... doxorubicin (PLD) for the treatment of women ...
(Date:9/2/2014)... , September 2, 2014 , ... EMITF ) announced today following the Company,s ... Ltd. ("Elbit Medical") (TASE: EMTC-M), a subsidiary of the ... fully diluted basis, announced that on September 1, 2014 ... 30.8% of the voting power ("Gamida Cell") and vast ...
Breaking Medicine Technology:Mast Therapeutics To Present At The Rodman And Renshaw 16th Annual Global Investment Conference On September 9th 2Mast Therapeutics To Present At The Rodman And Renshaw 16th Annual Global Investment Conference On September 9th 3VentiRx Pharmaceuticals Announces Fast Track Designation Granted for Motolimod (VTX-2337), a Novel Immunotherapy for Women with Ovarian Cancer 2VentiRx Pharmaceuticals Announces Fast Track Designation Granted for Motolimod (VTX-2337), a Novel Immunotherapy for Women with Ovarian Cancer 3Elbit Imaging Announces Gamida Cell Closed Option and Investment Agreements with a Major Pharmaceutical Company 2Elbit Imaging Announces Gamida Cell Closed Option and Investment Agreements with a Major Pharmaceutical Company 3
... 2011 Eli Lilly and Company (NYSE: LLY ) ... on Monday, April 18, 2011.  Lilly will also conduct a conference ... further detail the company,s financial performance. The conference ...  Investors, media and the general public can access a live webcast ...
... 6, 2011 Pure Biomed LLC has launched a ... facial treatments for quick, temporary relief of nerve pain ... of nerve damage.  Reunion is the only full line ... Reunion products were developed from the ground ...
Cached Medicine Technology:Affordable Nerve Pain Treatment Now Available in the U.S. 2
The DSL-05-10-VZM Varicella Zoster IgM Enzyme-Linked Immunosorbent Assay (ELISA) kit provides materials for the determination of IgM-class antibodies to Varicella Zoster Virus in human serum. This as...
... Mumps IgM Enzyme-Linked Immunosorbent Assay ... qualitative detection of IgM antibody ... for the determination of immunological ... this kit have not been ...
... INC. (DAI) Mumps IgG Enzyme-Linked ... for the detection and quantitative ... Mumps virus in human sera. ... used for the determination of ...
... treatment of diseases of the thoracic aorta ... incision in the chest to place a ... This method can result in long hospital ... community is seeking less invasive alternatives to ...
Medicine Products: