#impulse
- Diverting / Deviating — A term describing a factor, stimulus, nervous pathway, or structural element that induces a change of direction, reflection, or deviation of a physiological impulse or a biomechanical axis. In neurophysiology, it can refer to collateral neural pathways (shunts) that divert nerve impulses from their main path during central lesions, or an orthopedic device designed to correct the deviating axis of a limb affected by spasticity.
- Afferentation — A foundational physiological process consisting of the continuous transmission of nerve impulses and excitations from peripheral receptor neurons to the central nervous system neurons and cerebral cortex.
- Allodromia — A rare disorder or structural anomaly in the conduction of the heart's electrical impulses, characterized by the propagation of the stimulus through accessory pathways or in an atypical direction, different from the normal physiological pathway (sinus node, atrioventricular node, and bundle of His). This phenomenon can lead to severe arrhythmias or pre-excitation syndromes.
- Aneuria — A rare medical term used to describe a total absence, functional arrest, or severe pathological diminution of nerve impulse and conductivity within a peripheral nerve trunk. In a clinical and structural sense, this phenomenon disrupts the transmission of motor and sensory signals, often associated with severe traumatic injuries or acute degenerative processes of the nervous system.
- Autophonomania — A historical psychiatric term or extremely rare clinical neologism used to describe an obsessive, impulsive tendency or a morbid urge toward suicide or severe self-harm. In classic treatises on mental alienation, it represented a specific form of mania where melancholic delusion or psychotic depression focuses exclusively on the destruction of one's own organism.
- Axon — A unique, long, and thread-like extension of a neuron, which has the fundamental structural and physiological role of conducting the efferent nerve impulse (action potential) away from the cell body (soma) toward other nerve, muscle, or glandular cells. This cellular component is delimited by the axolemma, contains axoplasm, and is often protected by an insulating myelin sheath, facilitating an ultra-fast, precise, and delicate transmission of bioelectric signals within the nervous system.