title: [Rate of occurrence and reproducibility of the initial burst of frequency of muscle spindle receptors].
abstract: The initial burst (IB) of activity of the passive muscle spindle receptors occurs sometimes during muscle stretching with minor speed starting from the completely relaxed state. Its rare occurrence, unstability and variability reject the suggestion of acceleration-sensitivity in the muscle spindle receptors. The receptors respond sometimes to initial enhancement of rigidity in the extra- and intrafusal muscle fibers. The IB occurs as the result of interaction between both types of fibers during stretching.
mesh_terms: D000818:Animals; D002415:Cats; D004594:Electrophysiology; D009121:Muscle Denervation; D009470:Muscle Spindles / Q000502:physiology*; D009132:Muscles / Q000502:physiology; D010812:Physical Stimulation; D013997:Time Factors
vernacular_title: Vstrechaemost'i vosproizvodimost' nachal'nogo vspleska chastoty u retseptorov myshechnykh vereten.