Ephapses

Part of speech: noun

Definitions

1. Localized interruptions in the normal transmission of nerve impulses leading to uncoordinated signals between neurons; brief disruptions in nervous system communication that can affect muscle control or sensation; small areas where nerve signals cross or interfere abnormally resulting in transient sensory or motor disturbances
2. Areas in neural pathways where the electrical conduction of impulses is momentarily blocked or altered causing irregular synaptic activity; interruptions in peripheral or central nervous system signaling causing anomalies in reflexes or voluntary movement; spots where electrical impulses in nerves fail to propagate smoothly resulting in fleeting functional deficits
3. Temporary failures or blocks in nerve signal transmission at junctions between neurons causing irregular nervous system responses; brief episodes of disrupted neural communication that impact muscle function or sensation; discrete points of signal crossover or interference that impede effective nerve impulse conduction

Etymology: "Ephapses" is the plural of "ephapse," a modern scientific term for a point where nerve fibres that do not normally connect influence one another's electrical activity, typically by current passing through the tissue around them rather than across a synapse. The noun is formed in English from Ancient Greek "éphapsis," meaning "touching" or "caressing," a word built on the verb "ephaptein," "to fasten onto" or "to touch." The Greek sense of physical contact was chosen to describe the close proximity of the fibres. The coinage is a deliberate technical borrowing rather than an ancient term. Nothing in classical Greek refers to nerve signalling, so the word's meaning comes entirely from the modern research context in which the scientists who named the phenomenon adopted it. The Greek root supplies the core idea: two structures that touch can affect each other without any formal link between them.