Navigation Links
Sound and vision: Visual cortex processes auditory information too
Date:5/24/2014

Scientists studying brain process involved in sight have found the visual cortex also uses information gleaned from the ears as well as the eyes when viewing the world.

They suggest this auditory input enables the visual system to predict incoming information and could confer a survival advantage.

Professor Lars Muckli, of the Institute of Neuroscience and Psychology at the University of Glasgow, who led the research, said: "Sounds create visual imagery, mental images, and automatic projections.

"So, for example, if you are in a street and you hear the sound of an approaching motorbike, you expect to see a motorbike coming around the corner. If it turned out to be a horse, you'd be very surprised."

The study, published in the journal Current Biology, involved conducting five different experiments using functional Magnetic Resonance Imaging (fMRI) to examine the activity in the early visual cortex in 10 volunteer subjects.

In one experiment they asked the blindfolded volunteers to listen to three different natural sounds birdsong, traffic noise and a talking crowd.

Using a special algorithm that can identify unique patterns in brain activity, the researchers were able to discriminate between the different sounds being processed in early visual cortex activity.

A second experiment revealed even imagined images, in the absence of both sight and sound, evoked activity in the early visual cortex.

Lars Muckli said: "This research enhances our basic understanding of how interconnected different regions of the brain are. The early visual cortex hasn't previously been known to process auditory information, and while there is some anatomical evidence of interconnectedness in monkeys, our study is the first to clearly show a relationship in humans.

"In future we will test how this auditory information supports visual processing, but the assumption is it provides predictions to help the visual system to focus on surprising events which would confer a survival advantage.

"This might provide insights into mental health conditions such as schizophrenia or autism and help us understand how sensory perceptions differ in these individuals."

The project was part of a five-year study funded by a 1.5m European Research Council consolidator grant entitled 'Brain reading of contextual feedback and predictions', and the Biotechnology and Biological Sciences Research Council.

The researchers will explore more sounds to find out how precise predictive coding in the brain can be.


'/>"/>

Contact: Stuart Forsyth
stuart.forsyth@glasgow.ac.uk
44-785-403-4342
University of Glasgow
Source:Eurekalert

Related medicine news :

1. Breast tomosynthesis after screening mammography reduces need for ultrasound, biopsies
2. Focused ultrasound reduces cancer pain
3. Lymph node ultrasounds more accurate in obese breast cancer patients
4. Stigmas, once evolutionarily sound, are now bad health strategies
5. Sound trumps meaning in first language learning
6. Tinnitus study signals advance in understanding link between loud sounds exposure and hearing loss
7. 3D mapping biopsy finds 3x prostate cancer of ultrasound-guided biopsy
8. KeeboMed Inc. Introduces Live Chat Functionality on Its Website UsedUltrasoundEquipment.com
9. Sound Relief Hearing Center Announces the Winner of Their Second Annual "Gift of Better Hearing" Contest
10. KeeboMed Inc. Introduces New Ultrasound Machine, Chison ECO-3 on its Website
11. KeeboMed Inc. Introduces Chison ECO-3Ve to its Inventory of Ultrasound Machines
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/21/2017)... CA (PRWEB) , ... January 21, 2017 , ... ... Director of Alumni Relations, Dianne Travis-Teague, the electrifying line-up of events for its ... for alumni, family, friends, and community. “Coming Home 2017” will be held ...
(Date:1/21/2017)... (PRWEB) , ... January 21, 2017 , ... ... of its new medical office in Petaluma, located at 167 Lynch Creek Way. ... access to SRO sports medicine and rehabilitation services and on-site x-ray ...
(Date:1/21/2017)... , ... January 21, 2017 , ... ... Austin, Texas Periodontist Dr. Dan Holtzclaw in media for its creos™ line of ... surgeries performed by Dr. Holtzclaw in which he utilizes creos™ allo.gain™ bone graft ...
(Date:1/20/2017)... ... 2017 , ... A new partnership between Goodwill® and Roadie, Inc. aims to ... from clothes to couches to dressers and bicycles. Roadie — the national on-the-way delivery ... Goodwill donation center through February 28th. , “January is an exciting time when ...
(Date:1/20/2017)... ... 2017 , ... Source Vitál Apothecary, a skin and body care company dedicated ... company had a successful visit to the 2017 ECRM Diet, Vitamin & Sports Nutrition ... in the nutritional, sports and health industries a chance to meet in private sessions ...
Breaking Medicine News(10 mins):
(Date:1/20/2017)... -- Research and Markets has announced the addition ... Future" report to their offering. ... This research service on the global pharmaceutical ... provides a snapshot of the key participants in the market. ... from 2016 to 2020. The market is expected to grow at ...
(Date:1/20/2017)... 2017 Wells Specialty Pharmacy announces the acquisitions and ... in Winter Park, Florida and Pharm-EZ ... Operations have been consolidated into the 3796 Howell Branch Road ... announce that Chad Tomlinson , former Vice President of ... immediately. Mr. Tomlinson is a Graduate of Florida State University ...
(Date:1/20/2017)... -- Avillion LLP, a co-developer and financier of late-stage ... MD MBA as Chief Medical Officer. Dr Weinberg will be based ... ... spent more than 17 years as a pharmaceutical and biotech executive ... Over the course of his career, he has interfaced with the ...
Breaking Medicine Technology: