Introduction and Definitional Framework The Muscle Action Potential (MAP) constitutes the fundamental electrical signal essential for triggering muscle contraction across all fiber types—skeletal, cardiac, and smooth. It is defined as a rapid, transient, self-propagating wave of depolarization and subsequent repolarization that sweeps across the entire muscle cell membrane, known as the sarcolemma, immediately following adequate […]
Definition and Fundamental Measurement of the Muscle-Tension Gradient The concept of the Muscle-Tension Gradient (MTG) is fundamental to the fields of psychophysiology, biomechanics, and motor control, representing a crucial metric for quantifying muscle performance dynamics. Formally, the MTG is defined as the rate of change of a muscle’s output during a specific performance or exercise […]
Motor Evoked Potential The Core Definition of Motor Evoked Potential The Motor Evoked Potential (MEP) is fundamentally an electrophysiological signal generated in response to direct electrical or magnetic stimulation of the brain’s motor pathways, typically the motor cortex, and subsequently recorded from the peripheral muscles. It represents the functional integrity of the entire central motor […]
ELECTROMYOGRAPHY (EMG) Introduction to Electromyography (EMG) Electromyography (EMG) is a highly specialized electrodiagnostic medicine technique employed to evaluate and record the electrical activity produced by skeletal muscles. This sophisticated method detects the electrical potentials generated by muscle cells when they are electrically or neurologically activated. The fundamental purpose of EMG is to assess the health […]