Navigation Links
Brain Can 'See' Objects Through Touch
Date:5/28/2009

Tactile input plays a key role in visualization, study finds

THURSDAY, May 28 (HealthDay News) -- Touch alone can activate areas of the brain triggered when people look at objects, a finding that shows that these regions process information about objects using different types of sensory input, according to a new study.

Researchers at the University of Birmingham in the United Kingdom studied a man who suffered stroke-related damage in an area of the brain called the lateral occipital cortex (LO), which plays an important role in object recognition. As a result, the man couldn't process visual input normally; he could see objects, but they were jumbled figures to him a condition called visual agnosia.

However, the man could still recognize objects by holding them.

The researchers used functional MRI to compare brain activity in the mans brain and in healthy volunteers while they looked at pictures of objects and scrambled images and touched objects with one hand.

The results showed that tactile input is not secondary to visual recognition in activation of dorsal LO. Rather, it can operate directly through sense of touch, the study found.

"Our data indicate, for the first time, that at least some regions in the LO can be activated normally from touch, even when input from ventral LO is lesioned and visual recognition is prevented," the researchers wrote. "This is consistent with estimates of effective connectivity from functional MRI that have implied that there are direct connections between somatosensory cortex and LO."

The study appears online May 28 in the journal Current Biology.

More information

The U.S. National Institute of Neurological Disorders and Stroke has more about agnosia.



-- Robert Preidt



SOURCE: Cell Press, news release, May 28, 2009


'/>"/>
Copyright©2009 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Kyowa Hakko USA Announces GRAS Self-Affirmation for Novel Brain Health Ingredient Cognizin(R) Citicoline
2. Cottonseed-based drug shows promise in treating severe brain cancer
3. Peregrine Pharmaceuticals Reports Progress in Cotara(R) Brain Cancer Clinical Program
4. Fighting "Brain Fog": How the Right Hormones Can Improve Mental Sharpness for Women
5. Plaques, Tangles in Brain Dont Always Lead to Alzheimers
6. Singing brains offers epilepsy and schizophrenia clues
7. Games for Health Conference Announces First Cognitive Health Track Powered by SharpBrains
8. Fear Response May Stem From Protein in Brain
9. Cocaine Spurs Long-Term Change in Brain Chemistry
10. Brain Scans Show How Humans Hear Emotion
11. Bonnie Hunt, Melina Kanakaredes and Dr. Ruth Westheimer Lend Their Support to Childrens Brain Tumor Foundation Benefit
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Brain Can 'See' Objects Through Touch
(Date:6/25/2017)... ... ... heatwave currently bearing down on Northern California pushing temperatures to the maximum, many people are ... with laser hair removal. , The process of summer waxing and constantly shaving unwanted ... want to do is get out, dive in and cool off. There is a way ...
(Date:6/24/2017)... ... June 24, 2017 , ... The weather is heating up and ... and business owners should be aware that the summer months provide more than warmer ... locks and keys can be negatively affected from direct exposure to the sun. When ...
(Date:6/23/2017)... ... June 23, 2017 , ... Yesterday, U.S. Senate Republicans ... to repeal and replace the Affordable Care Act (ACA). Like the bill narrowly ... to Medicaid, a public health insurance program for low-income children, pregnant women, parents ...
(Date:6/23/2017)... ... June 23, 2017 , ... Everybody has their own personal preference when ... read it, and some people don't like it at all. FindaTopDoc took a look ... , Erotic literature can give readers a taste of their deepest, darkest fantasies and ...
(Date:6/23/2017)... ... ... 21 Middle East and South Asia Leaders Selected as Eisenhower Fellows ... civil society in 11 countries across the Middle East and South Asia to embark ... of knowledge and ideas with the leading minds in their fields. , For ...
Breaking Medicine News(10 mins):
(Date:6/11/2017)... and Company (NYSE: LLY ) announced today ... an investigational treatment for the prevention of episodic and ... endpoints for galcanezumab compared to placebo at both studied ... REGAIN) will be presented today at the American Headache ... . "The detailed Phase 3 ...
(Date:6/9/2017)... , June 9, 2017 More than 400 ... effort to help spread lessons learned from clinical research ... Diabetes Federation (IDF) and Eli Lilly and Company (NYSE: ... second phase of the Bringing Research in Diabetes to ... commitment to helping people with diabetes effectively manage their ...
(Date:6/8/2017)... June 8, 2017  StatLab Medical Products ... and manufacturer of diagnostic supplies for the ... Cressey & Company LP ("Cressey & Company"), ... a growth-focused investment in the Company. Cressey ... position from selling shareholder, Prairie Capital, L.P., ...
Breaking Medicine Technology: