The goal of this interventional study is to understand the neural and behavioural bases of action simulation and its links with action execution in healthy volunteers.

Hypotheses: Action simulation recruits neural networks that are largely similar to those activated by action execution, with some differences to avoid executing a movement while observing/imagining it.

Participants will be tested with TMS while doing motor imagery or action observation.

Inclusion Criteria:

• healthy adult volunteers (more than 18 years old)

Exclusion Criteria:

• Participants taking anti-epileptic drugs
• pregnant or breastfeeding women cannot participate in this study
• people with a pacemaker
• people with a cochlear implant
• people with a metal part in the brain or any other medical implant in their body (pump, neurostimulator, valve,) cannot take part in this study.