HOME >> BIOLOGY >> NEWS
The brain's flashy tale

How we perceive the brightness of light may reveal how the brain is wired to handle the wide ranges of light stimulation we encounter every minute. A Salk Institute study, published in the April 15 issue of Nature, shows that timing as well as the intensity of a light and that background it is on-- determines how we judge a light's brightness.

Professor Terrence Sejnowski and his colleagues found that the timing of short and long bright light flashes could create optical illusions: when the short light came on at the beginning of the long light it appeared to be dimmer, but when it came on at the end of the long light the short light was brighter.

"This study reveals a new way in which the cerebral cortex handles light and suggests that the brain is processing light in the cortex through two parallel streams of nerve cells," Sejnowski says.

"One of the streams adapts its perceptual signaling to the brain in response to changes in light, and the other that does not waver from its initial assessment of a light's brightness."

The work is part of Sejnowski's continuing quest to unravel the complex networks of nerve cells created to handle perception, thought, language, consciousness and the other functions in the brain that make us uniquely human.


'"/>

Contact: Andrew Porterfield
porterfield@salk.edu
858-453-4100 x1340
Salk Institute
14-Apr-2004


Page: 1

Related biology news :

1. Making sense of the brains mind-boggling complexity
2. Leptin rewires the brains feeding circuits
3. Estrogen promotes gender differences in brains response to stress
4. Pain and the brain: Sex, hormones & genetics affect brains pain control system
5. Cocaine harms brains pleasure center, addict study finds
6. Alzheimers disease may originate in the brains white matter
7. Johns Hopkins scientists find brains nose plug
8. Researchers light the path of brains feeding circuit in mice
9. Mouse gene trap helps decipher brains wiring diagram
10. Neuronal choir hums in unison to rivet brains attention
11. Study links impulsive violence with brains inability to regulate emotion

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:9/17/2019)... Bar, CA (PRWEB) , ... September 17, 2019 ... ... Kim, recently presented at the 27th Series of the Australia Society of Implant ... an Implant Surgeon’s Perspective,” was part of the Surgical Aspects of Modern Implant ...
(Date:9/14/2019)... ... 13, 2019 , ... Two studies presented at the annual ... of gene therapy and advances to decrease nerve damage using Fluorescence image-guided surgery. ... storage diseases (LSD) are among the most dismal of prognosis in all of ...
(Date:9/11/2019)... ... September 10, 2019 , ... Newly released ... an unusual collaboration that offers a beautiful and thought-provoking journey through five chapters ... Srinivasan painted to Whittaker’s poems and other times, Whittaker wrote to Srinivasan’s paintings. ...
Breaking Biology News(10 mins):
(Date:9/24/2019)... ... September 24, 2019 , ... Drug resistance has been ... World Health Organization, with MRSA becoming one of the most serious concerns. Hong Kong ... reported cases of community-associated MRSA (CA-MRSA), or a seven-fold of the figure in 2007 ...
(Date:9/22/2019)... ... September 20, 2019 , ... ... Neurotrophic Factor (BDNF) testing in serum . BDNF plays a vital role in ... growth and differentiation of new neurons in the brain involved in learning, memory, ...
(Date:9/17/2019)... ... September 16, 2019 , ... When a lot of researchers think of ... the complete 3D characterization of tissues through the use of confocal and light sheet ... analysis and advanced cell culture focused contract research organization and today offers 3D ...
(Date:9/11/2019)... ... September 10, 2019 , ... An upcoming ... the latest developments in genome sequencing analysis. Check your local listings for more ... at Rivermap Research & Consulting and will explore its revolutionary pathogenic DNA analysis ...
Breaking Biology Technology:
Cached News: