Neuroscientists are seeking volunteers to help them in a project looking at the effects of ageing on the brain.

The team from the Institute of Neurosciences and Psychology at Glasgow University are looking for men and women aged 55 and over to join the study, which involves identifying emotional states from facial expressions.

Volunteers will be asked to look at a variety of animated three-dimensional faces displaying different expressions and identify the emotions being conveyed.

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A smaller batch of volunteers will have their brain activity monitored by a MEG (magnetoencephalography) machine during the task, which will be carried out over three two-hour sessions.

"There are special areas of the brain which are specifically involved in face recognition, but these areas are subject to attrition as we grow older."