Retrieving "Motor Unit" from the archives

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1. Involuntary Muscular Activity

   Linked via "motor unit"

   Thermoregulatory Contractions
   Shivering, the primary mechanism for generating endogenous heat (thermogenesis through non-shivering thermogenesis, NST), is a highly organized form of IMA. It involves paradoxical activation of opposing muscle groups (e.g., biceps and triceps firing asynchronously) to produce kinetic energy without net external work [3]. This activity is modulated by the descending thermosensitive tracts originating from the lateral preoptic area (LPOA) …

2. Involuntary Muscular Activity

   Linked via "motor units"

   GABAergic Enhancement
   Increasing inhibitory $\gamma$-aminobutyric acid (GABA (GABA)) signaling is a primary approach for reducing hyperexcitability leading to spasms (e.g., in tetanus or strychnine poisoning, though these are typically acute). Benzodiazepines exert their effect by potentiating the chloride influx mediated by $\text{GABA}_{\text{A}}$ receptors, hyperpolarizing postsynaptic motor neurons and thus increasing the th…