Navigation Links
Memory decline linked to an inability to ignore distractions
Date:3/25/2010

Milan, Italy, 25 March 2010 - One of the most common complaints among healthy older adults relates to a decline in memory performance. This decline has been linked to an inability to ignore irrelevant information when forming memories. In order to ignore distracting information, the brain should act to suppress its responses to distractions, but it has been shown that in older adults there is in fact an increase in brain activity at those times. In a new study published in the April 2010 issue of Elsevier's Cortex (http://www.elsevier.com/locate/cortex) researchers at the University of California San Francisco have shown that even prior knowledge of an impending distraction does not help to improve the working memory performance of older adults.

Drs. Theodore Zanto and Adam Gazzaley studied 21 adults aged between 60 and 80 years while they performed a working memory task in which they were shown random sequences of pictures containing faces and scenes. From a given sequence, participants were asked to remember either only the faces (ignoring scenes) or only the scenes (ignoring faces). In a second round of testing, the participants were given prior information about which specific pictures in the sequence would be relevant and which to ignore. The participants' brain activity during the tasks was recorded using electroencephalograms (EEGs).

Previous research from this laboratory has indicated that the increase in brain activity in response to distractions occurs very soon (within 200 milliseconds) after the distraction appears. Since there is only a very short amount of time allotted for the brain to identify an item as irrelevant and suppress any further neural processing, it was suggested that older adults might benefit from prior knowledge of the impending distraction. However, results from the new study have proved that this is not the case.

Interestingly, the researchers found that later stages of neural processing (500-650 milliseconds after item presentation) do show signs of suppression, confirming that the "suppression deficit" is related to early stages of neural processing. The findings suggest that a working memory decline in older adults is indeed due to an inability to ignore distracting information, which furthermore cannot be improved with preparedness.


'/>"/>

Contact: Valeria Brancolini
v.brancolini@elsevier.com
39-028-818-4260
Elsevier
Source:Eurekalert

Related medicine news :

1. iPhone Memory Aid for Scatterbrains, Aging Baby Boomers and Busy, Forgetful People
2. Rapamycin rescues learning, memory in Alzheimers mouse model
3. Bioethics memory aid can help assess patient decision-making capacity in medical emergencies
4. Memory Loss Supplement Manufacturer Partners With Nationally-Syndicated Radio Host John Tesh
5. To Boost Your Memory, Take a Break
6. Immune memory formation seen in early stages of viral infection
7. Brain scientists extend map of fear memory formation
8. Discovery of epigenetic memory during breast cancer
9. The Run for the Memory Marathon Team Getting in Shape and Fighting Alzheimers
10. €1.6 million ($2.32 million) grant awarded to Prof. Kobi Rosenblum for brain and memory research
11. Healthy older adults with subjective memory loss may be at increased risk for MCI and dementia
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/12/2016)... ... 12, 2016 , ... CDRH Enforcement Trends: , Back to the Future , Feb. 25, 2016 ... Winston Churchill said, “Those who don’t learn from history are doomed to repeat it.” , ... come knocking this year. But that takes time. , Take a close look at ...
(Date:2/12/2016)... ... 12, 2016 , ... Each year, the American Physical Therapy Association (APTA) offers ... the Anaheim Convention Center. Almost 10,000 physical therapists across the country are expected to ... more about their chosen field and network with their colleagues. As in years ...
(Date:2/12/2016)... ... , ... Coco Libre, the maker of coconut water beverages with a purpose, ... Event. Coco Libre will offer musicians and celebrities the company’s signature Organic Coconut Water, ... gifting suite, held this year at the W Hollywood Hotel, has become a pre-show ...
(Date:2/12/2016)... ... February 12, 2016 , ... ... at Zuckerberg San Francisco General Hospital on April 5-7. The series is a ... create new habits. The workshops cover a broad range of topics, including coaching ...
(Date:2/12/2016)... (PRWEB) , ... February 12, 2016 , ... Every winter, ... , This winter the West Penn Burn Center, part of the Allegheny ... #1, to bring you the “Space Heaters Need Space” campaign. , ...
Breaking Medicine News(10 mins):
(Date:2/11/2016)... Feb. 11, 2016  NOIT™ Research LLC, a private, ... of Change" campaign to assist needy families in obtaining ... unit sold between February 10, 2016 and March 31, ... needy family. The NOIT is an auditory stimulus that ... develop language skills. Beth Shier , ...
(Date:2/11/2016)... , Feb. 11, 2016 AAIPharma ... provider of custom manufacturing and development services for ... sterile fill-finish capabilities and capacity in its ... in demand has driven several recent investments. ... it had one filling line with small-scale lyophilization. ...
(Date:2/11/2016)... PORTLAND, Ore. , Feb. 11, 2016 ... to announce the acquisition of SolutionsRx, a full-service 340B ... hospitals. Along with providing traditional contract pharmacy services, SolutionsRx ... assist clients in navigating the complex 340B regulatory environment. ... Wellpartner. --> James R. Love , CEO ...
Breaking Medicine Technology: