HOME >> BIOLOGY >> NEWS
Hopkins Scientists Clock The Speed Of Comprehension

New Data To Aid Efforts To Understand How The Brain Processes Language

Capitalizing on an opportunity presented by a patient scheduled for tests using electrodes surgically placed on his brain, Johns Hopkins scientists have clocked the speed of thought, measuring the time the patient took to understand what everyday objects are in pictures.

The Hopkins team, led by neurologist John Hart, M.D., discovered that it took their volunteer patient about 250 to 300 milliseconds, or a fourth of a second, to begin to understand a pictured object, and another 250 to 450 milliseconds to fully comprehend what the object was. He appeared to complete the process more quickly when the object shown was familiar to him, Hart notes.

"The data, obtained within a single stage at a single site in the brain, are further evidence that information accumulates gradually in the brain, rather than in a strictly all-or-none fashion," Hart says.

Understanding the individual steps that cause this accumulation, and how they relate to each other functionally and temporally, could help scientists better understand comprehension and word loss from disorders like stroke or Alzheimer's disease, he notes.

In an article describing the unusual experiment in the May 25 Proceedings of the National Academy of the Sciences, Hart and Hopkins specialists in epilepsy, biomedical engineering, neurosurgery, neuropsychology and cognitive science said knowing the time sequence and speed of language processing and other "cognitive operations" is "critical for building theories of higher mental activity."

"This information has been difficult to acquire," Hart notes, "even with different combinations of behavioral tests, electrical recordings and imaging studies such as PET scans."

Their task was somewhat simplified by an adult epilepsy patient preparing for surger
'"/>

Contact: Michael Purdy
mpurdy@welchlink.welch.jhu.edu
(410)955-8725
Johns Hopkins Medical Institutions
26-May-1998


Page: 1 2 3

Related biology news :

1. Hopkins scientists use blood proteins to detect ovarian cancer
2. Hopkins to found first center for comprehensive study of epigenetics
3. Hopkins scientists overcome main obstacle to making tons of short, drug-like proteins
4. Hopkins Marine Station honored by the American Society for Microbiology
5. Johns Hopkins gene hunters pinpoint new cancer gene target
6. Hopkins researchers identify transplantation antigens among Sioux Indians
7. Hopkins researchers discover how nitric oxide prevents blood vessel inflammation
8. Hopkins is first US institution to obtain powerful genotyping system
9. Dr. Robot tested at Hopkins
10. From Hopkins: Children may outgrow peanut allergies
11. OXiGENE announces launch of ophthalmic clinical trial at The Johns Hopkins School of Medicine

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


(Date:4/5/2017)... , April 4, 2017 KEY FINDINGS ... anticipated to expand at a CAGR of 25.76% during ... diseases is the primary factor for the growth of ... report: https://www.reportbuyer.com/product/4807905/ MARKET INSIGHTS The global ... product, technology, application, and geography. The stem cell market ...
(Date:3/30/2017)... NEW YORK , March 30, 2017 ... by type (physiological and behavioral), by technology (fingerprint, AFIS, ... recognition, voice recognition, and others), by end use industry ... travel and immigration, financial and banking, and others), and ... Europe , Asia Pacific ...
(Date:3/24/2017)... 2017 Research and Markets has announced the ... & Trends - Industry Forecast to 2025" report to their ... The Global ... CAGR of around 15.1% over the next decade to reach approximately ... the market estimates and forecasts for all the given segments on ...
Breaking Biology News(10 mins):
(Date:7/26/2017)... ... July 25, 2017 , ... In this webinar ... of the considerations needed for designing ideal guide RNAs and DNA oligo or ... create targeted double-strand breaks in genomic DNA has greatly simplified strategies for precise ...
(Date:7/26/2017)... ... July 26, 2017 , ... ... at the National Institutes of Health (NIH), will be one of the esteemed ... provides a platform for a multi-stakeholder discussion on the latest advancements in the ...
(Date:7/25/2017)... ... July 25, 2017 , ... ... Executive Director of Strategic Planning. His extensive background in consulting, development and ... experience encompasses marketing and differentiation consulting, business strategy development, new product marketing ...
(Date:7/24/2017)... ... July 24, 2017 , ... ... and Canada who have proven their superior service quality as rated by hiring ... as an industry leader based on service quality ratings from their placed talent. ...
Breaking Biology Technology:
Cached News: