Learning to control brain activity can improve visual sensitivity
Washington, December 5 (ANI): Researchers say training human volunteers to control their own brain activity in precise areas of the brain can enhance fundamental aspects of their visual sensitivity.
This non-invasive 'neurofeedback' approach could one day be used to improve brain function in patients with abnormal patterns of activity, for example stroke patients.
Researchers at the Wellcome Trust Centre for Neuroimaging at UCL used non-invasive, real-time brain imaging that enabled participants to watch their own brain activity on a screen, a technique known as neurofeedback. During the training phase, they were asked to try and increase activity in the area of the brain that processes visual information, the visual cortex, by imagining images and observing how their brains responded.
After the training phase, the participants' visual perception was tested using a new task that required them to detect very subtle changes in the contrast of an image. When they were asked to repeat this task whilst clamping brain activity in the visual cortex at high levels, they found that those who had successfully learned to control their brain activity could improve their ability to detect even very small changes in contrast.
This improved performance was only observed when participants were exercising control of their brain activity.
"We've shown that we can train people to manipulate their own brain activity and improve their visual sensitivity, without surgery and without drugs," said lead author Dr Frank Scharnowski, who is now based at the University of Geneva. (ANI)
Read More: National Book Trust | Shopping Centre Mayapuri | Civic Centre Bhilai Mdg | Gannavaram Centre | Kalidindi Centre Nd Bo | Rtc Bus Complex Centre | Agricultural Research Centre | World University Centre | Postal Training Centre | Chirakadavu Centre | Karikkattoor Centre | Extension Trg Centre | City Centre | Killing Centre | Paomata Centre Edbo | Christan Centre Haochong Edbo | B.r. Centre | Asc Centre(n) Gaya | Postal Traning Centre | Mahavir Cancer Sansthan and Research Centre Patna
SHIKARA TREK BEGINS IN J&K AFTER 30 YEARS (NNIS Exclusive)
May 25, 2013 at 11:05 PM
CONG LEADER KILLED, PARTY CHIEF ABDUCTED IN NAXAL ATTACK IN CG
May 25, 2013 at 10:29 PM
SWAMY TO NNIS : CALL FOR BCCI CHIEF'S RESIGNATION IS ORCHESTRATED
May 25, 2013 at 9:46 PM