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)... -- The Allen Institute for Cell Science today announces the ... and dynamic digital window into the human cell. The ... of deep learning to create predictive models of cell ... growing suite of powerful tools. The Allen Cell Explorer ... available resources created and shared by the Allen Institute ...
(Date:4/5/2017)... LONDON , April 4, 2017 KEY ... is anticipated to expand at a CAGR of 25.76% ... neurodegenerative diseases is the primary factor for the growth ... full report: https://www.reportbuyer.com/product/4807905/ MARKET INSIGHTS The ... of product, technology, application, and geography. The stem cell ...
(Date:4/3/2017)... , April 3, 2017  Data ... precision engineering platform, detected a statistically significant ... product prior to treatment and objective response ... the potential to predict whether cancer patients ... to treatment, as well as to improve ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... ... October 12, 2017 , ... ... first-ever genomics analysis platform specifically designed for life science researchers to analyze ... pioneering researcher Rosalind Franklin, who made a major contribution to the discovery ...
(Date:10/11/2017)... YORBA LINDA, CA (PRWEB) , ... October 11, ... ... adapted to upregulate any gene in its endogenous context, enabling overexpression experiments and ... activation (CRISPRa) system with small RNA guides is transformative for performing systematic gain-of-function ...
(Date:10/11/2017)... Alto, CA, USA (PRWEB) , ... October 11, 2017 , ... ... set to take place on 7th and 8th June 2018 in San Francisco, CA. ... policy influencers as well as several distinguished CEOs, board directors and government officials from ...
(Date:10/11/2017)... 2017  VMS BioMarketing, a leading provider of patient support ... Nurse Educator (CNE) network, which will launch this week. The ... health care professionals to enhance the patient care experience by ... other health care professionals to help women who have been ... ...
Breaking Biology Technology:
Cached News: