JHU researcher discovers brain cells hav... (cells' response. Previous experiments ha...)

JHU researcher discovers brain cells have 'memory'

Date:4/2/2009

cells' response. Previous experiments have shown that the nerve cells in V2 code for elementary features such as pieces of contour and patches of color. What is characteristic of V2, though, is that it codes these features with reference to objects. A vertical line, for instance, is coded either as the contour of an object on the left or as a contour of an object on the right. In this study, the researchers presented sequences of images consisting of a briefly-flashed square followed by a vertical line. They then compared the nerve cells' responses to the line when it was preceded by a square on the left and when it was preceded by a square on the right. The recordings revealed that the V2 cells remember the side on which the square had been presented, meaning that the flashing square set up a representation in the brain that persisted even after the image of the square was extinguished.

Von der Heydt said that discovering memory in this region was quite a surprise because the usual understanding is that neurons in the visual cortex simply respond to visual stimulation, but do not have a memory of their own.

Though this research is only a small piece of the "how people see and process images" puzzle, it's important, according to von der Heydt.

"We are trying to understand how the brain represents the changing visual scene and knows what is where at any given moment," von der Heydt said. "How does it delineate the contours of objects and how does it remember which contours belong to each object in a stream of multiple images? These are important and interesting questions whose answer may someday have very practical implications. For instance, how we function under conditions that strain our ability to process all relevant information - whether it be driving in city traffic, surveying a large crowd to find someone, or something else, may depend in large part on what kind of short-term memor
'/>"/>

Contact: Lisa De Nike
Lde@jhu.edu
443-287-9960
Johns Hopkins University
Source:Eurekalert

1

GOOD

Page: 1 2 3
Related medicine news :

1. Young eye researchers receive prestigious ARVO-AFER/Merck award
2. UT Southwestern researchers reveal how the brain processes important information
3. Amalgam fillings are safe, but skeptics still claim controversy, researcher says
4. Researchers Test Lithium as Radiation Protector
5. UCI researchers find new way to fight cocaine addiction
6. Researchers question effectiveness of warning labels on over-the-counter drugs
7. GUMC researcher creates first Web-interactive CME course for physicians on pharmaceutical marketing
8. Researchers Successfully Create Computer-Simulated Model for Evaluating Artificial Pancreas
9. Yale researchers discover mechanism for
10. MSU researcher links cholesterol crystals to cardiovascular attacks
11. Three Johns Hopkins researchers named Howard Hughes Medical Institute early career scientists

Post Your Comments:

Related Image:

JHU researcher discovers brain cells have 'memory'

(Date:12/15/2009)... combined with developmental changes increases risk in teens, study ... teenagers, being overweight or obese increases the risk of ... to be true for younger children, Australian researchers have ... children, aged 2 to 18, who were referred for ... researchers found that among those aged 12 and older ...

(Date:12/15/2009)... for injury when doctors decide benefits of imaging outweigh ... MRI scans can pose a serious risk to people ... Drug Administration researchers exposed pacemakers to a simulated MRI ... at the tip of the pacemaker lead, where it ... The exposure to MRI magnetic pulses caused certain pacemakers ...

(Date:12/15/2009)... NEW YORK, Dec. 15 ... research report is available in its ... Manufacturing Industry in the U.S. and ... ,, http://www.reportlinker.com/p0167482/In-Vitro-Diagnostic-Substance-Manufacturing-Industry-in-the-US-and-its-International-Trade-[Q4-2009-Edition].html ,, ... Manufacturing Industry report provides the latest ...

(Date:12/15/2009)... NEW YORK, Dec. 15 ... research report is available in its ... Cardiovascular Diseases Therapeutics - Market Forecasts ... and Deals Analysis ,, ... ,, The author has released its ...

(Date:12/15/2009)... Research shows a direct correlation between effective workplace ... a culture of health improvement can result in ... new white paper from The Vitality Group, a ... an ideal setting for the delivery of health ... corporate culture of health is a critical component ...

[0] Puberty May Trigger Sleep Apnea in Overweight Kids [0] Patients With Pacemakers Should Avoid MRI Scans [0] Reportlinker Adds In-Vitro Diagnostic Substance Manufacturing Industry in the U.S. and its International Trade [Q4 2009 Edition][0] Reportlinker Adds The Future of Cardiovascular Diseases Therapeutics - Market Forecasts to 2015, Competitive Benchmarking, Product Pipeline and Deals Analysis [0] Optimizing Corporate Culture is Critical to the Success of Wellness Programs

... The American,Veterinary Medical Association (AVMA) commends the U.S. ... (VWGP) as part of the 2007 Farm,Bill. This ... supply of public health and food safety veterinarians ... important to rural families, rural,communities and the nation ...

... December 19, 2007 Heart attacks among cigarette smokers ... A common defect in a gene controlling cholesterol metabolism ... to a new study in Annals of Noninvasive Electrocardiology. ... normally have heart attacks no sooner than their non-smoking ...

... investigators have discovered that immune system cells that engulf ... this task from a common housekeeping mechanism that most ... that is likely to help researchers understand how the ... can resist chemotherapy drugs before they have a chance ...

... MAYA Steps Up by Helping Latino Nonprofits and ... Will Feature a DC Latino with,HIV., WASHINGTON, ... by MAYA:, What: This holiday season, MAYA ... offering HIV/AIDS programs to the Latino community.,MAYA will ...

... application process were offered,coverage, WASHINGTON, Dec. 19 ... market released today by America,s,Health Insurance Plans (AHIP) ... affordable than is widely known. The survey found ... coverage, and that,consumers have access to a wide ...

... inefficient way our bodies replace worn-out cells is a defense ... cell just split into two identical daughter cells would seem ... apart. , However that would be a recipe ... of Arizona in Tucson. , "If there were only one ...

Other Medicine News:Health News:AVMA Lauds Senators for Approving 2007 Farm Bill Legislation that Includes the Veterinary Workforce Grant Program 2 Health News:St. Jude finds link between cellular defense processes, showing how cancer cells survive 2 Health News:St. Jude finds link between cellular defense processes, showing how cancer cells survive 3 Health News:HIV/AIDS Rate Increases in DC Area Latino Population, Community Lacks Resources 2 Health News:New AHIP Survey Finds Individual Health Care Coverage Accessible and Affordable 2 Health News:New AHIP Survey Finds Individual Health Care Coverage Accessible and Affordable 3 Health News:Why don't we get cancer all the time? 2

AVMA Lauds Senators for Approving 2007 Farm Bill Legislation that Includes the Veterinary Workforce Grant Program Heart attack risk from smoking due to genetics St. Jude finds link between cellular defense processes, showing how cancer cells survive HIV/AIDS Rate Increases in DC Area Latino Population, Community Lacks Resources New AHIP Survey Finds Individual Health Care Coverage Accessible and Affordable Why don't we get cancer all the time?

(Date:12/15/2009)... YORK, Dec. 15 Reportlinker.com ... report is available in its catalogue: ... strategic assessment of the competitive environment ... priority management responsibilities, the task crucial ... Timely and factual competitive intelligence is ...

(Date:12/15/2009)... YORK, Dec. 15 Reportlinker.com ... report is available in its catalogue: ... Therapeutics - Market Forecasts to 2015, ... Analysis ,, http://www.reportlinker.com/p0168102/The-Future-of-HIV-Therapeutics---Market-Forecasts-to-2015-Competitive-Benchmarking-Product-Pipeline-and-Deals-Analysis.html ... author has released its latest research ...

(Date:12/15/2009)... 15 NxStage Medical, Inc. (Nasdaq: ... products, today announced that a group of its ... embarking on a week-long, conventional (non-dialysis) Caribbean cruise ... cruise, dubbed the "2010 Freedom Cruise: We,re Taking ... on January 3, 2010 and returns on January ...

Breaking Medicine Technology:Reportlinker Adds Top Ten World's Leading Orthopedics Companies 2 Reportlinker Adds Top Ten World's Leading Orthopedics Companies 3 Reportlinker Adds The Future of HIV Therapeutics - Market Forecasts to 2015, Competitive Benchmarking, Product Pipeline and Deals Analysis 2 Reportlinker Adds The Future of HIV Therapeutics - Market Forecasts to 2015, Competitive Benchmarking, Product Pipeline and Deals Analysis 3 Reportlinker Adds The Future of HIV Therapeutics - Market Forecasts to 2015, Competitive Benchmarking, Product Pipeline and Deals Analysis 4 Reportlinker Adds The Future of HIV Therapeutics - Market Forecasts to 2015, Competitive Benchmarking, Product Pipeline and Deals Analysis 5 Reportlinker Adds The Future of HIV Therapeutics - Market Forecasts to 2015, Competitive Benchmarking, Product Pipeline and Deals Analysis 6 Reportlinker Adds The Future of HIV Therapeutics - Market Forecasts to 2015, Competitive Benchmarking, Product Pipeline and Deals Analysis 7 Reportlinker Adds The Future of HIV Therapeutics - Market Forecasts to 2015, Competitive Benchmarking, Product Pipeline and Deals Analysis 8 Reportlinker Adds The Future of HIV Therapeutics - Market Forecasts to 2015, Competitive Benchmarking, Product Pipeline and Deals Analysis 9 Reportlinker Adds The Future of HIV Therapeutics - Market Forecasts to 2015, Competitive Benchmarking, Product Pipeline and Deals Analysis 10 Reportlinker Adds The Future of HIV Therapeutics - Market Forecasts to 2015, Competitive Benchmarking, Product Pipeline and Deals Analysis 11 Reportlinker Adds The Future of HIV Therapeutics - Market Forecasts to 2015, Competitive Benchmarking, Product Pipeline and Deals Analysis 12 Group of NxStage(R) Home Hemodialysis Patients to Take Caribbean Cruise with the System One(TM) 2 Group of NxStage(R) Home Hemodialysis Patients to Take Caribbean Cruise with the System One(TM) 3 Group of NxStage(R) Home Hemodialysis Patients to Take Caribbean Cruise with the System One(TM) 4 Photo 3A Moms To Be Can Eat Well Even on a Budget 57785 1 Photo 3A Moms To Be Can Eat Well Even on a Budget 57785 2 Photo 3A Moms To Be Can Eat Well Even on a Budget 57785 3 Photo 3A Moms To Be Can Eat Well Even on a Budget 57785 4 Photo 3A Moms To Be Can Eat Well Even on a Budget 57785 5 Clean Hands Report Card 28R 29 3A Americans Get a B on Hand Hygiene 57783 1 Clean Hands Report Card 28R 29 3A Americans Get a B on Hand Hygiene 57783 2 Clean Hands Report Card 28R 29 3A Americans Get a B on Hand Hygiene 57783 3 A Dementia That Afflicts Younger Population Has Similarities to Alzheimers Applicable Treatments 57781 1 A Dementia That Afflicts Younger Population Has Similarities to Alzheimers Applicable Treatments 57781 2 A Dementia That Afflicts Younger Population Has Similarities to Alzheimers Applicable Treatments 57781 3 A Dementia That Afflicts Younger Population Has Similarities to Alzheimers Applicable Treatments 57781 4

[0] Reportlinker Adds Top Ten World's Leading Orthopedics Companies [0] Reportlinker Adds The Future of HIV Therapeutics - Market Forecasts to 2015, Competitive Benchmarking, Product Pipeline and Deals Analysis [0] Group of NxStage(R) Home Hemodialysis Patients to Take Caribbean Cruise with the System One(TM)

... Pre-mixed insulin,analogues, a modified form of conventional pre-mixed ... controlling high blood sugar,levels after meals in patients ... by the Agency for Healthcare Research and Quality, ... Services., Conventional pre-mixed human insulin, however, appears ...

... 15 The National,Alliance for Thrombosis and ... Steven K. Galson, MD, MPH for issuing ... deep vein thrombosis (DVT) and pulmonary,embolism (PE)., ... morning in Washington DC,( http://www.surgeongeneral.gov/topics/deepvein/calltoaction/call-to-action -,on-dvt-2008.pdf ). ...

Other Medicine Technology:Modified Insulin Most Effective For Controlling Post-Meal Blood Sugar Levels 2 Modified Insulin Most Effective For Controlling Post-Meal Blood Sugar Levels 3 Surgeon General's 'Call to Action' to Prevent DVT/PE Praised by NATT as Turning Point 2

Modified Insulin Most Effective For Controlling Post-Meal Blood Sugar Levels Surgeon General's 'Call to Action' to Prevent DVT/PE Praised by NATT as Turning Point

Exceptional illumination and realiability from this small source....

Tested by surgeons for functionality and ergonomy. Uses the Medifix C3-3001-3CCD camera head....

Integrated electronics, single-chip CCD camera with PAL and NTSC output. PAL output at 460 lines, NTSC output at 470 lines, focal length 30mm. 90mm length x 20mm diameter....

Large-image field with titanium couplers for c-mount scopes. 30mm focal length....

Medicine Products:

Cold Light Projector 150 W/ 220 V C33001-3CCD Camera System Camera Head C1301-1CCD(S)/Straight Video Arthroscope

JHU researcher discovers brain cells hav...(cells' response. Previous experiments ha...),Health