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Function of the dorsal neck muscles and tbeir afferent in put in Lateral gaze

Research Project

Project/Area Number 08640914
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 人類学(含生理人類学)
Research InstitutionKyorin University School of Medicine

Principal Investigator

HIRAI Naoki  Kyorin University School of Medicine, Professor, 医学部, 教授 (40086583)

Project Period (FY) 1996 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1997: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1996: ¥1,100,000 (Direct Cost: ¥1,100,000)
Keywordsmotor control / eye movement / saccade / vestibuloocular reflex / sternocleidmastoid / 適応制御
Research Abstract

To examine the role of the ventral neck muscles in lateral geze shift, the eye and head movements towards a visual target were analyzed in subjects with unilateral neck dissection and normal subjects. The eye position was derived by an electro-oculographic technique and the head position with a potentiometer on the helmet.
When a peripheral target was lit, the eye made an initial saccade towards it and the head then began to turn towards it. The patients made a gaze shift to the target accurately as the normal subjects. However, decrease in the amplitude and increase in the duration of the head displacement from the values of the normal subject were observed in the patient. Accordingly, the trajectory of eye movement between two groups was different, especially when the target was presented out of the ouclomotor range (over 50 deg). In the patient, time for the gaze to reach the target was significantly longer, and the vestibulo-ocular reflex was almost suppressed during head movements. Moreover, when the subjects were ordered to continue to maintain their gaze direction towards the imaginary target after the target lamp was off, the patient showed a tendency that their gaze gradually deviated to the nasal direction due solely to unsteadiness of the eye position, probably reflecting a loss of appropriate afferent signals form the neck muscles to the oculomotor center.

Report

(3 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • Research Products

    (17 results)

All Other

All Publications (17 results)

  • [Publications] Hirai, N: "Lateral gaze shift in patients with SCM dissection" Jpn J Physiol. 46. S146- (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Suzuki T: "Function of the Sterno-Cleid-Mastoid muscle(SCM)in the Lateral gaze shiff" Anthovopol Sci. 104. 151- (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Hirai, N: "Octivity of the-intercostalmuscle afferents in the lower thoracic segments during sponta meous breathing in the cat" Neurosci Res. 25. 301-304 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Nakayama, K: "Oxon branching of intercostal Ia afferentsfibers in the spicalcord" Motor Control. 8. 47-49 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Suzuki T: "Properties of head movements associated with express saccade induced by gap paradigm" Jpn J.Physiol. 47. 177- (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Nakayama, K.: "Morphology of single primary spindle afferents of the in the intercostal muscles in the cat" J.comp Neurol. (in press).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Hirai, N.: "Lateral gaze shift in patients with SCM dissection" Jpn J Physiol. 46. 146 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Suzuki, T.: "Function of the sterno-cleid-mastoid muscle (SCM) in the lateral gaze." Anthoropol Sci. 104. 151 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Hirai, N.: "Activity of the intercostal muscle afferents in the lower thoracic segments euring spontaneous breathing in the cat." Neurosci Res. 25. 301-304 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Nakayama, K.: "Axon branching of intercostal Ia affeents fibers in the spinal cord." Motor Control. 8. 47-49 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Suzuki, T.: "Properties of head movements associated with express saccade induced by gap paradigm." Jpn J Physiol. 47. 177 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Nakayama, K.: "Morphology fo single primary spindle afferents of the in the intercostal muscles in the cat." J.Comp.Neurol.(in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Suzuki,T.: "Properties of head mcvements associated with express saccades induced by gap paradigm" Jpn J Physiol.47. 177 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Nakayama,K.: "Trajecty of single primary afferents from the intercostal muscle spindle in the cat" Neurosci Res. S21. 201 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Nakayama,K.: "Morphology of single primary spindle afferents of the intercostal muscles in the cat" J.Comp Neurol.(in press).

    • Related Report
      1997 Annual Research Report
  • [Publications] Hirai,N: "Lateral gaze shifts in patients with SCM dissection" Japanese journal of Physiology. 46. S146- (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Suzuki,T: "Effects of radicalneck surgery on head movement and the vestibuloocular reflex" Abstracts for Asian Oceanian Congress of Neurology. 143- (1996)

    • Related Report
      1996 Annual Research Report

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Published: 1996-04-01   Modified: 2016-04-21  

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