The role of the muscle spindles in human masseter

Scutter S. D., Türker K. S.

Human Movement Science, cilt.20, sa.4-5, ss.489-497, 2001 (SCI-Expanded) identifier identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 20 Sayı: 4-5
  • Basım Tarihi: 2001
  • Doi Numarası: 10.1016/s0167-9457(01)00064-1
  • Dergi Adı: Human Movement Science
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Social Sciences Citation Index (SSCI), Scopus
  • Sayfa Sayıları: ss.489-497
  • Anahtar Kelimeler: mastication, masseter, H-reflex, muscle spindles
  • İstanbul Gelişim Üniversitesi Adresli: Hayır

Özet

In the limb muscles, the muscle spindles have been demonstrated to be important in the maintenance of static posture. This role is supported by the close proximity of the muscle spindles to motor units that develop small forces and are fatigue-resistant, and the greater effectiveness of the input from muscle spindle afferents onto the small motoneurons supplying these motor units. In masseter, input from the muscle spindles is more effective on the larger motoneurons. This suggests that the muscle spindles may be more important in masseter for the development of large, fast forces, rather than for the maintenance of static postures. Thus muscle spindles in masseter may be important in load compensation during chewing and for the development of powerful bite forces in aggressive or defensive situations. © 2001 Elsevier Science B.V. All rights reserved.