Navigation Links
Some short-term memories die suddenly, no fading
Date:4/29/2009

The human brain stores some kinds of memories for a lifetime. But when our eyes are open and looking at things, our gray matter also creates temporary memories that help us process complex tasks during the few seconds these visual memories exist. For decades, scientists have held that such short-term memories don't suddenly disappear, but grow gradually more imprecise over the course of several seconds.

Now researchers at the University of California, Davis, have found just the opposite. Their subjects retained temporary memories of an object's color or shape for at least four seconds. After that, the memories began to wink out like streetlights at daybreak, remaining quite accurate until they suddenly disappeared.

To test the accuracy of short-term visual memory, Weiwei Zhang, a postdoctoral scholar, and Steve Luck, a professor of psychology, both at the UC Davis Center for Mind and Brain, devised a pair of tests, both of which could separately measure two things: the accuracy of a short-term memory and the probability that the memory still existed. Each test was given to 12 adults.

In the first test, three squares each with a different color fill flashed for a tenth of a second on a computer screen. After an interval of one, four or 10 seconds a wheel showing the entire spectrum of colors appeared on the screen. The three squares also reappeared, only now they were colorless and one of them was highlighted. Subjects were asked to recall the color of the highlighted square and click on the area of the wheel that most closely matched it. Each subject repeated this test 150 times for each of the three memory retention intervals.

When subjects retained a memory of the color, they clicked very close to it on the wheel the distance between the click and the actual color indicating the accuracy of the memory. When color had disappeared from memory, however, subjects clicked at random on the wheel.

The second test w
'/>"/>

Contact: Liese Greensfelder
lgreensfelder@ucdavis.edu
530-752-6101
University of California - Davis
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Living fossils have long- and short-term memory
2. Memory molecule stores memories in neocortex
3. Tracking feline memories on the move
4. Genetic tags reveal secrets of memories staying power in mice
5. CSHL scientists identify a mechanism that helps fruit flies lock-in memories
6. Scientists find elephant memories may hold key to survival
7. Erasing drug-associated memories may stop drug addiction relapses
8. Emotion and scent create lasting memories -- even in a sleeping brain
9. SUNY Downstate researchers find that memory storage molecule preserves complex memories
10. Mollusks taste memories to build shells
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Some short-term memories die suddenly, no fading
(Date:11/18/2014)... , Nov. 17, 2014   ... and EMC collaborate to develop The Partners Data ... , The Partners Data Lake will allow researcher ... improve diagnostics, treatment and the lives of patients ... research and clinical activities across the Partners system, ...
(Date:11/11/2014)... 2014  Forensicon, Inc., a Chicago ... announce the promotion of Yaniv Schiff from ... In Schiff,s new role as Director, he will lead ... forensics examiners and provide leadership within the company,s digital ... http://photos.prnewswire.com/prnh/20141110/157719 Schiff joined Forensicon in ...
(Date:11/6/2014)... TALLAHASSEE, Fla. -- A groundbreaking paper from a team ... better understanding of how plants could adapt to and ... The research, published in the latest issue of the ... how chromatin (the complex of DNA and proteins) is ... material, so that some genes are turned on and ...
Breaking Biology News(10 mins):Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 2Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 3Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 4Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 5Yaniv Schiff Promoted to Director of Digital Forensics at Forensicon, Inc. 2Maize analysis yields whole new world of genetic science 2
... hormone best known for stimulating the production of red blood ... by Cell Press in the January 27th issue of the ... influences on infectious and inflammatory diseases and may be useful ... a cytokine hormone that stimulates the production of red blood ...
... Aware, Inc. (Nasdaq: AWRE ), a leading technology ... scheduled a conference call to discuss the company,s operating results ... February 3, 2011, at 5:00 p.m. Eastern Time. President and ... earnings conference call. This call is being webcast ...
... WI, JANUARY 19, 2011 Invasive broadleaf weeds ... the chemical atrazine in herbicides to protect their plants. ... term residual control of many weed species. However, the ... farmers in northeastern Colorado. In a collaborative study ...
Cached Biology News:Red blood cell hormone modulates the immune system 2Aware, Inc. Announces Q4 and FY2010 Earnings Conference Call 2
(Date:11/21/2014)... , Nov. 20, 2014 Polaris Group ... dosed in its Phase 1 trial of ADI-PEG ... the treatment of malignant pleural mesothelioma (MPM) and ... conducting clinical trials on ADI-PEG 20, both as ... the treatment of several other indications, including breast ...
(Date:11/21/2014)... , Nov. 20, 2014 /PRNewswire/ - BIOREM Inc. (TSXV: BRM) ("Biorem" ... nine month periods ended September 30, 2014.  Biorem,s complete 2014 third ... www.sedar.com ). Financial Summary:Three-months ended September 30, ... per share data) , 2014 , 2013 ... 2,282 , 5,281 , 6,715 , ...
(Date:11/18/2014)... November 17, 2014 Cirrascale ... architecture blade-based and rackmount computing infrastructure, today announced ... dual-GPU accelerator throughout its GPU-enabled blade server and ... the company’s latest proprietary 80-lane Gen3 PCIe switch-enabled ... NVIDIA Tesla K80 dual-GPU accelerator cards in a ...
(Date:11/18/2014)... 18, 2014 Alanda Software, a ... Reporting solutions, announced today that a top tier ... Consummate Provider™ solution in both the U.S. and ... SaaS based, Data Quality remediation portal, designed to ... party Providers improve their ability to capture, transmit ...
Breaking Biology Technology:Polaris Group Announces Treatment of First Patient in Phase 1 Study of ADI-PEG 20 plus Pemetrexed and Cisplatin in Malignant Pleural Mesothelioma And Non-Squamous Non-Small Cell Lung Carcinoma 2Biorem Reports Third Quarter Results 2Biorem Reports Third Quarter Results 3Cirrascale® Expands Multi-GPU Peering Solutions with Support for New NVIDIA Tesla K80 Dual-GPU Accelerators 2Cirrascale® Expands Multi-GPU Peering Solutions with Support for New NVIDIA Tesla K80 Dual-GPU Accelerators 3Alanda Software Completes Successful Implementation of Global Data Quality & Vendor Management Solution for Top Tier Global Biopharmaceutical Company 2
... CITY, Calif., Nov. 16, 2010 Ingenuity® ... for life science researchers, today announced a ... leader in predictive disease network research.  Under ... industry-leading analysis software, and the Ingenuity® Knowledge ...
... 2010 Semantic Web Challenge -- NEW YORK, November 16, 2010 ... ... if (typeof(lpUnit)==,undefined,) var lpUnit=,PRN,; --> ... function(data) { var s = ,; var first_result; // Results are keyed by longUrl, so we need to grab ...
... Cambridge, MA, November 15, 2010 - Epizyme, Inc., a ... cancer therapeutics against epigenetic targets, today announced the publication ... the National Academy of Sciences (USA). The ... clear path for the translation of basic science into ...
Cached Biology Technology:Ingenuity Systems and Sage Bionetworks Collaborate to Enable Predictive Disease Network Research 2Elsevier Sponsors 2010 Semantic Web Challenge 2Elsevier Sponsors 2010 Semantic Web Challenge 3Elsevier Sponsors 2010 Semantic Web Challenge 4Elsevier Sponsors 2010 Semantic Web Challenge 5Elsevier Sponsors 2010 Semantic Web Challenge 6Elsevier Sponsors 2010 Semantic Web Challenge 7Elsevier Sponsors 2010 Semantic Web Challenge 8Elsevier Sponsors 2010 Semantic Web Challenge 9Elsevier Sponsors 2010 Semantic Web Challenge 10Elsevier Sponsors 2010 Semantic Web Challenge 11Epizyme identifies novel opportunity for treatment of genetically defined human B-cell lymphomas 2
Affinity Purified Rabbit Anti-mouse sRANKL Biotinylated Polyclonal Antibody...
Rabbit polyclonal to FOXJ2 ( Abpromise for all tested applications). entrezGeneID: 55810 SwissProtID: Q9P0K8...
Selenoprotein P Purified Anti-Mouse clone 35, Isotype Mouse IgG 2b , 50 µg Consult technical datasheet for details....
Mouse monoclonal [3B6] to HSV1 + HSV2 ICP5 Major Capsid Protein ( Abpromise for all tested applications)....
Biology Products: