Friday 18 April 2014
News updated at 1:13 PM IST
Weather
Max: 34.6°C
Min : 22.1°C
In Bangalore
Sunny day

Scientists find key to improved memory

New York, Aug 30, 2013 (PTI):

Scientists have discovered that better coordination between two regions of the brain can boost memory.

Their findings show that the better the coordination between hippocampus and left perirhinal cortex (LPRC) - two parts of the brain previously linked with memory formation - the less likely we are to forget newly obtained information.

"When memories are supported by greater coordination between different parts of the brain, it's a sign that they are going to last longer," said Lila Davachi, an associate professor in New York University's Department of Psychology and Center for Neural Science.

It is commonly understood that the key to memory consolidation - the cementing of an experience or information in our brain - is signalling from the brain's hippocampus across different cortical areas, researchers said.


Davachi and Kaia Vilberg, a postdoctoral researcher at the University of Texas, examined how memories are formed at their earliest stages through a series of experiments over a three-day period.

The researchers aimed to encode, or create, new memories among the study's subjects. They showed participants a series of images - objects and outdoor scenes, both of which were paired with words.

Subjects were asked to form an association between the word and image presented on the screen.

On day two, the subjects returned to the lab and completed another round of encoding tasks using new sets of visuals and words.

This allowed the researchers to compare two types of memory: the more consolidated, long duration (LD) memories encoded on day one with the less consolidated, short duration (SD) memories encoded on day two.

Participants were placed in an MRI machine - in order to monitor neural activity - and viewed the same visual-word pairings they saw on days one and two as well as a new round of visuals paired with words.

They then completed a memory test of approximately half of the visual-word pairings they'd seen thus far. On day three, they returned to the lab for a memory test on the remaining visuals.

By testing over multiple days, the researchers were able to isolate memories that declined or were preserved over time and, with it, better understand the neurological factors that contribute to memory preservation.

Their results showed that memories (ie, the visual-word associations) that were not forgotten were associated with greater coordination between the hippocampus and LPR.

By contrast, there was notably less connectivity between these regions for visual - word associations that the study's subjects tended to forget. The study was published in the journal Neuron.

Go to Top

Photo Gallery
Britain's Catherine (2nd R), Duchess of Cambridge, strokes Fred the ram as her husband Prince...

Britain's Catherine (2nd R), Duchess of Cambridge, strokes Fred the ram as her husband Prince...

An anti-government protester throws a molotov cocktail at the Bolivarian National Police during...

An anti-government protester throws a molotov cocktail at the Bolivarian National Police during...

A Soleil supercar is seen during a press event at the Jacob Javits Convention Center during the...

A Soleil supercar is seen during a press event at the Jacob Javits Convention Center during the...

Toronto Mayor Rob Ford bobble heads are on display for sale as Ford launches his re-election...

Toronto Mayor Rob Ford bobble heads are on display for sale as Ford launches his re-election...

A Buddhist monk prays for missing passengers who were on the South Korean ferry 'Sewol' which...

A Buddhist monk prays for missing passengers who were on the South Korean ferry 'Sewol' which...

U.S. first lady Michelle Obama obliges cheering students by showing off the hand signal the...

U.S. first lady Michelle Obama obliges cheering students by showing off the hand signal the...

A FedEx truck drives past a makeshift memorial, set up in memory of those who died last week when...

A FedEx truck drives past a makeshift memorial, set up in memory of those who died last week when...

A Koenigsegg supercar is seen during a press event at the Jacob Javits Convention Center during...

A Koenigsegg supercar is seen during a press event at the Jacob Javits Convention Center during...

Former U.S. Secretary of State Hillary Clinton participates in A No Ceilings Conversation at...

Former U.S. Secretary of State Hillary Clinton participates in A No Ceilings Conversation at...

A man carries a flower wreath while passing through a line of police officers outside the funeral...

A man carries a flower wreath while passing through a line of police officers outside the funeral...

Copyright 2014, The Printers (Mysore) Private Ltd., 75, M.G Road, Post Box 5331, Bangalore - 560001
Tel: +91 (80) 25880000 Fax No. +91 (80) 25880523