Quantitative Estimation of Sensitivity to Muscle Stretches in the Tonic Muscle Spindle Discharges of Cats

Abstract

Joint interval histogram (JIH) and power spectrum density, (PSD) of GIa unitary discharges were obtained while muscle of an anesthetized cat was stretched steadily. The PSD curve was approximated three lines in the following frequency band, below 15Hz, 15 to 35Hz and above 35Hz. The gradient between 15 to 35 Hz was steep and corresponds to how much the intrafusal fibers were activated. In a pattern of JIH, Ia discharges distributed wide in general. But, interval was regular and histogram made a group when intrafusal fibers were activated by electric stimulation on the ventral rootlet. In particular conditions, peaks were observed around 50 to 60 Hz in PSD.

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Document Details

Document Type
Technical Report
Publication Date
Oct 25, 2001
Accession Number
ADA409599

Entities

People

  • H. Matsuzaki
  • M. Mizote

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Dynamic Response
  • Engineering
  • Experimental Data
  • Frequency
  • Frequency Bands
  • Histograms
  • Intervals
  • Magnetic Tape
  • Military Research
  • Muscle Fibers
  • Muscles
  • Peak Values
  • Power Spectra
  • Sensitivity
  • Spectra
  • Spinal Cord
  • Time Intervals

Readers

  • Brain and Cognitive Science; Experimental Psychology; Cognitive Neuroscience
  • Neuroscience
  • Statistical inference.