Evaluation of Motor-Related Beta-Activity in Relation to Naturalistic Movement in Healthy Adult Subjects

"Human participants will perform reach and grasp movements to various objects (e.g. a cube, sphere, or rod) driven either by perceived action affordances, or instruction cues. A rotating carousel will be used to present subjects with various objects affording different types of grasps (e.g. a precision pinch, a whole hand 'power' grasp, or a tripod grasp).~Prior to the experiment, subjects will be tested outside the scanner by asking them to grasp each object as they would naturally to ensure that each object elicits the expected grasp type. Subject-specific, 3D-printed head-casts will be created based on high resolution MRI scans from each subject, and worn by subjects during the MEG experiment (Experiment 1) to reduce within-session head movement associated with reaching and grasping.~At the end of this session an experimental task is added: detection of tons in presence of multitonal masks, in order to verify how beta peaks might be generated by a stimulus auditory."

Experiment 2 consists of a task of reaching for and grasping several objects (e.g. a cube, sphere, or rod) ; the task used for experiment 2 is the same as that used for experiment 1. EEG signals will be measured.