Mental Practice (MP) Combined With Transcranial Direct Current Stimulation (tDCS) on Motor Learning in the Elderly

Exclusion Criteria

• •A refusal to participate in the study or to sign the consent.
• •No coverage by a Social Security plan.
• •A deprivation of civil rights (guardianship, tutorship, protection of justice).
• •A Body Mass Index (BMI) \> 25kg/m2.
• •A nap every afternoon.
• •A psychiatric, neurological or motor disorder.
• •A visuospatial empan \< 3 on the Corsi block test (Corsi, 1972).
• •A depression score \> 5 on the Yesavage Geriatric Depression Scale (Yesavage et al., 1982).
• •A walking aid (cane, walker).
• •A fall during the last 12 months.
• •A risk of falling, with a score \> 14s on the Timed Up and GO (TUG, Podsiadlo \& Richardson, 1991).
• •A difficulty in standing or moving, grasping or manipulating objects.
• •A disabling pain in the upper and/or lower limbs.
• •The presence of osteoarthritis or arthritis in the fingers of the left hand and lower limbs.
• •A chronic disease (rheumatoid arthritis, fibromyalgia, multiple sclerosis...).
• •An injury to the left hand and/or lower limbs that is less than 3 months old.
• •A surgery on a joint that is less than 6 months old.
• •Current or past practice of an activity involving strong manual dexterity (piano, guitar, typing, etc.) or coordination of the lower limbs (dance, rhythmic gymnastics, English boxing, etc.) for more than 3 hours per week.
• •An inability to perform motor imagery with a score of 10 on the Kinesthetic and Visual Imagery Questionnaire (KVIQ, Malouin et al., 2007) as well as an imagined time/actual execution time ratio \> 1.5s on the mental chronometric test.
• •No significant neurological history (e.g., history of migraines, traumatic brain injury resulting in a loss of consciousness, epilepsy or history of epilepsy);
• •No history of alcohol and/or substance abuse;
• •No psychiatric illness;
• •No metallic implants (intracranial electrodes, surgical clips, pacemaker)
• •No wound scalp or skin condition (psoriasis, eczema).