Which category includes NMES, TENS, FES, direct currents, and other specialized electrical currents?

• A. Manual modalities
• B. Mechanical modalities
• C. Light therapy modalities
• D. Electrical modalities

Answer: (D)

Electrical modalities use electrical energy to influence nerve or muscle function. NMES stimulates motor nerves to provoke muscle contractions, TENS primarily targets sensory nerves to alter pain signaling, and FES uses electrical stimulation to produce functional movements. Direct currents refer to a steady current used for applications like iontophoresis or certain healing therapies, and there are other specialized currents in this same category as well. This group is distinct from manual modalities (hands-on techniques) and from mechanical or light-based modalities, which rely on physical forces or light energy rather than electrical stimulation.