"Use spatial memory to reduce risk of dementia" Says Véronique Bohbot,
neuroscientist at the Douglas Institute

MONTREAL, Dec. 15 /CNW Telbec/ - Véronique Bohbot, PhD., neuroscientist at the Douglas Mental Health University Institute and associate professor at McGill University, leads studies on navigational strategies. She presented her findings at the recent meeting of the Society for Neuroscience in San Diego, which could bring light into how we can make better use of our hippocampus in order to reduce the risk of dementia.

IMPORTANT NOTICE: Contrary to what some articles on the web have suggested, the research done in her laboratory did not assess the use or non-use of GPS. GPS has some implication only if people stop using their spatial memory.

Two strategies used by our brain
When we find our way in the world, we rely on one of two strategies. One is spatial strategy, in which we build cognitive maps using relationships between landmarks to help us determine where we are but also help us plan where we want to go (For instance, you will memorize the spatial relationship between the market, home and school such that you take shortcuts when going to novel destinations). The other one is a stimulus-response strategy, which is kind of an auto-pilot mode (after some repetition, you make a series of right and left turns out of habit like going to work every day using the same route. Sometimes you get there out of habit without knowing what you saw on the way). When you use a GPS, you don't necessarily use your spatial memory.

Why it is better to use a spatial strategy - Summary of findings
In her lab, Bohbot and her team used virtual navigation to conduct a series of studies. It was shown that in healthy older adults:

1) Only the people who used spatial strategies showed significant fMRI activity in the hippocampus during a virtual navigation task that allowed for both spatial and response strategies.

2) Spatial strategies significantly correlated with grey matter in the hippocampus.

3) Participants using spatial strategies also had reduced risk of dementia as assessed with the MoCA© (The Montreal Cognitive Assessment) is a cognitive screening test designed to assist Health Professionals for detection of mild cognitive impairment)

Significant results

"These results are in agreement with the literature showing that the first symptoms of Alzheimer's disease involve problems with spatial orientation as well as the literature that shows that decreased volume in the hippocampus is a risk factor for conversion from mild cognitive impairment to Alzheimer's disease." adds Bohbot.

For further information:

For all interview requests please contact:
Marie france Coutu
Communication and public affairs
Tel.: [phone], ext 2769, Cell.: [phone]
[email protected]

Please note:
Véronique Bohbot will be available for interviews starting January 10, 2011