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Quote of the day

'By far the greatest danger of Artificial Intelligence is that people conclude too early that they understand it'

 

Eliezer Yudkowsky

Memories are geotagged with spatial information, researchers find

RATE THIS! +11
Posted in Science on 5th Dec, 2013 01:47 AM by AlexMuller

Neurons that encode spatial information form “geotags” for specific memories and these geotags are activated immediately before those memories are recalled, a team of neuroscientists from the University of Pennsylvania and Freiburg University has discovered.

 
They used a video game in which people navigate through a virtual town delivering objects to specific locations.
 
“These findings provide the first direct neural evidence for the idea that the human memory system tags memories with information about where and when they were formed and that the act of recall involves the reinstatement of these tags,” said Michael Kahana, professor of psychology in Penn’s School of Arts and Sciences.
 
Kahana and his colleagues have long conducted research with epilepsy patients who have electrodes implanted in their brains as part of their treatment. The electrodes directly capture electrical activity from throughout the brain while the patients participate in experiments from their hospital beds.

Tags: brainneuroscienceneuronsmemoryepilepsy

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Comments

Author: Guest
Posted: 2013-12-05
+1
Another step forward for understanding functions of the most complex biological structure - the brain. Memories are very complex.... Reply
Author: Guest
Posted: 2013-12-05
+0
Very interesting approach. Using the brain recordings generated while the participants navigated the virtual city, the researchers were able to develop a neural map that corresponded to the city’s layout. Reply
Author: Guest
Posted: 2013-12-05
+0
They identified ‘place cells’. They are perhaps the most striking example of a neuron that encodes an abstract cognitive representation.
2 Replies
Author: Guest
Posted: 2013-12-05
+0
Earlier neuroscience research had suggested the hippocampus has two distinct roles: the role of cartographer, tracking location information for spatial memory; and the role of scribe, recording events for episodic memory. This experiment provides further evidence that these roles are intertwined. Reply
Reply


 

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