Audiovisual equipment

It must be possible to present visual and auditory stimuli to subjects while they are lying with their heads in the bore of the magnet. Headphones are required to clearly present auditory stimuli in the presence of the loud background noise of gradient switching. Visual stimuli can be projected on to a screen which is viewed through a system of mirrors. The subject should have access to an alert button. In addition, it is generally useful for subjects to use a button-press device to indicate their response to cognitively demanding experimental tasks. These behavioural data will need to be monitored during scanning.

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