Transcranial Direct Current Stimulation (tDCS) in the Primary Motor Cortex in Healthy Individuals

Transcranial Direct Current Stimulation (tDCS) in the Primary Motor Cortex and Its Effects on Sensitivity, Pressure Pain Threshold, and Electromyographic Activity in Healthy Individuals: A Quasi-experimental Single-blind Sham-controlled Trial

The main aim of this study is to assess the short-term effects of active-tDCS (a-tDCS) on the M1 regarding sensorimotor variables such as discriminative sensation, pressure pain threshold and electromyographic activity compared with a sham-tDCS (s-tDCS) in healthy individuals. The main objective was to determine whether there were clinically relevant changes generated by tDCS and if they were superior to a sham intervention.

Inclusion Criteria:

• asymptomatic participants
• men and women aged 18 to 65 years

Exclusion Criteria:

• insomnia
• nausea
• headache
• pregnancy
• use of painkillers in the last 24 hours
• presence of metal inside the head
• pacemaker
• wound on the area of electrodes' application
• drug consumption; (j) recent application of tDCS
• psychiatric disease impeding understanding of the study.