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Masaki Matsuzaki - One of the best experts on this subject based on the ideXlab platform.
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short tone burst evoked myogenic potentials on the Sternocleidomastoid Muscle are these potentials also of vestibular origin
Archives of Otolaryngology-head & Neck Surgery, 1999Co-Authors: Toshihisa Murofushi, Masaki MatsuzakiAbstract:Objectives To show that short tone bursts (STBs) evoke myogenic potentials from the Sternocleidomastoid Muscle (SCM) that are of vestibular origin. Design Evoked potential activity was recorded from the SCMs of normal volunteers and from patients with vestibulocochlear disorders. Setting This outpatient study was conducted at the Department of Otolaryngology, University of Tokyo, Tokyo, Japan. Subjects Nine normal volunteers and 30 patients (34 affected ears) with vestibulocochlear disorders were examined. Intervention Diagnostic. Outcome measures Sound-evoked myogenic potentials in response to STBs were recorded with surface electrodes over each SCM. Responses evoked by STBs in patients were compared with responses evoked by clicks. Results In all normal subjects, STBs (0.5, 1, and 2 kHz) evoked biphasic responses on the SCM ipsilateral to the stimulated ear; the same was true for clicks. Short tone bursts of 0.5 kHz evoked the largest responses, while STBs of 2 kHz evoked the smallest. In patients with vestibulocochlear disorders, responses to STBs of 0.5 kHz were similar to responses evoked by clicks. Thirty (88%) of the 34 affected ears demonstrated the same results with 0.5-kHz STBs and with clicks. Responses were present in patients with total or near-total hearing loss and intact vestibular function. Conversely, patients with preserved hearing but with absent or severely decreased vestibular function had absent or significantly decreased myogenic potentials evoked by STBs. Conclusions Short tone bursts as well as clicks can evoke myogenic potentials from the SCM. Myogenic potentials evoked by STBs are also probably of vestibular origin.
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short tone burst evoked myogenic potentials on the Sternocleidomastoid Muscle are these potentials also of vestibular origin
Archives of Otolaryngology-head & Neck Surgery, 1999Co-Authors: Toshihisa Murofushi, Masaki Matsuzaki, Chihhsiu WuAbstract:Objectives To show that short tone bursts (STBs) evoke myogenic potentials from the Sternocleidomastoid Muscle (SCM) that are of vestibular origin. Design Evoked potential activity was recorded from the SCMs of normal volunteers and from patients with vestibulocochlear disorders. Setting This outpatient study was conducted at the Department of Otolaryngology, University of Tokyo, Tokyo, Japan. Subjects Nine normal volunteers and 30 patients (34 affected ears) with vestibulocochlear disorders were examined. Intervention Diagnostic. Outcome measures Sound-evoked myogenic potentials in response to STBs were recorded with surface electrodes over each SCM. Responses evoked by STBs in patients were compared with responses evoked by clicks. Results In all normal subjects, STBs (0.5, 1, and 2 kHz) evoked biphasic responses on the SCM ipsilateral to the stimulated ear; the same was true for clicks. Short tone bursts of 0.5 kHz evoked the largest responses, while STBs of 2 kHz evoked the smallest. In patients with vestibulocochlear disorders, responses to STBs of 0.5 kHz were similar to responses evoked by clicks. Thirty (88%) of the 34 affected ears demonstrated the same results with 0.5-kHz STBs and with clicks. Responses were present in patients with total or near-total hearing loss and intact vestibular function. Conversely, patients with preserved hearing but with absent or severely decreased vestibular function had absent or significantly decreased myogenic potentials evoked by STBs. Conclusions Short tone bursts as well as clicks can evoke myogenic potentials from the SCM. Myogenic potentials evoked by STBs are also probably of vestibular origin.
Toshihisa Murofushi - One of the best experts on this subject based on the ideXlab platform.
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short tone burst evoked myogenic potentials on the Sternocleidomastoid Muscle are these potentials also of vestibular origin
Archives of Otolaryngology-head & Neck Surgery, 1999Co-Authors: Toshihisa Murofushi, Masaki MatsuzakiAbstract:Objectives To show that short tone bursts (STBs) evoke myogenic potentials from the Sternocleidomastoid Muscle (SCM) that are of vestibular origin. Design Evoked potential activity was recorded from the SCMs of normal volunteers and from patients with vestibulocochlear disorders. Setting This outpatient study was conducted at the Department of Otolaryngology, University of Tokyo, Tokyo, Japan. Subjects Nine normal volunteers and 30 patients (34 affected ears) with vestibulocochlear disorders were examined. Intervention Diagnostic. Outcome measures Sound-evoked myogenic potentials in response to STBs were recorded with surface electrodes over each SCM. Responses evoked by STBs in patients were compared with responses evoked by clicks. Results In all normal subjects, STBs (0.5, 1, and 2 kHz) evoked biphasic responses on the SCM ipsilateral to the stimulated ear; the same was true for clicks. Short tone bursts of 0.5 kHz evoked the largest responses, while STBs of 2 kHz evoked the smallest. In patients with vestibulocochlear disorders, responses to STBs of 0.5 kHz were similar to responses evoked by clicks. Thirty (88%) of the 34 affected ears demonstrated the same results with 0.5-kHz STBs and with clicks. Responses were present in patients with total or near-total hearing loss and intact vestibular function. Conversely, patients with preserved hearing but with absent or severely decreased vestibular function had absent or significantly decreased myogenic potentials evoked by STBs. Conclusions Short tone bursts as well as clicks can evoke myogenic potentials from the SCM. Myogenic potentials evoked by STBs are also probably of vestibular origin.
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short tone burst evoked myogenic potentials on the Sternocleidomastoid Muscle are these potentials also of vestibular origin
Archives of Otolaryngology-head & Neck Surgery, 1999Co-Authors: Toshihisa Murofushi, Masaki Matsuzaki, Chihhsiu WuAbstract:Objectives To show that short tone bursts (STBs) evoke myogenic potentials from the Sternocleidomastoid Muscle (SCM) that are of vestibular origin. Design Evoked potential activity was recorded from the SCMs of normal volunteers and from patients with vestibulocochlear disorders. Setting This outpatient study was conducted at the Department of Otolaryngology, University of Tokyo, Tokyo, Japan. Subjects Nine normal volunteers and 30 patients (34 affected ears) with vestibulocochlear disorders were examined. Intervention Diagnostic. Outcome measures Sound-evoked myogenic potentials in response to STBs were recorded with surface electrodes over each SCM. Responses evoked by STBs in patients were compared with responses evoked by clicks. Results In all normal subjects, STBs (0.5, 1, and 2 kHz) evoked biphasic responses on the SCM ipsilateral to the stimulated ear; the same was true for clicks. Short tone bursts of 0.5 kHz evoked the largest responses, while STBs of 2 kHz evoked the smallest. In patients with vestibulocochlear disorders, responses to STBs of 0.5 kHz were similar to responses evoked by clicks. Thirty (88%) of the 34 affected ears demonstrated the same results with 0.5-kHz STBs and with clicks. Responses were present in patients with total or near-total hearing loss and intact vestibular function. Conversely, patients with preserved hearing but with absent or severely decreased vestibular function had absent or significantly decreased myogenic potentials evoked by STBs. Conclusions Short tone bursts as well as clicks can evoke myogenic potentials from the SCM. Myogenic potentials evoked by STBs are also probably of vestibular origin.
Chihhsiu Wu - One of the best experts on this subject based on the ideXlab platform.
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short tone burst evoked myogenic potentials on the Sternocleidomastoid Muscle are these potentials also of vestibular origin
Archives of Otolaryngology-head & Neck Surgery, 1999Co-Authors: Toshihisa Murofushi, Masaki Matsuzaki, Chihhsiu WuAbstract:Objectives To show that short tone bursts (STBs) evoke myogenic potentials from the Sternocleidomastoid Muscle (SCM) that are of vestibular origin. Design Evoked potential activity was recorded from the SCMs of normal volunteers and from patients with vestibulocochlear disorders. Setting This outpatient study was conducted at the Department of Otolaryngology, University of Tokyo, Tokyo, Japan. Subjects Nine normal volunteers and 30 patients (34 affected ears) with vestibulocochlear disorders were examined. Intervention Diagnostic. Outcome measures Sound-evoked myogenic potentials in response to STBs were recorded with surface electrodes over each SCM. Responses evoked by STBs in patients were compared with responses evoked by clicks. Results In all normal subjects, STBs (0.5, 1, and 2 kHz) evoked biphasic responses on the SCM ipsilateral to the stimulated ear; the same was true for clicks. Short tone bursts of 0.5 kHz evoked the largest responses, while STBs of 2 kHz evoked the smallest. In patients with vestibulocochlear disorders, responses to STBs of 0.5 kHz were similar to responses evoked by clicks. Thirty (88%) of the 34 affected ears demonstrated the same results with 0.5-kHz STBs and with clicks. Responses were present in patients with total or near-total hearing loss and intact vestibular function. Conversely, patients with preserved hearing but with absent or severely decreased vestibular function had absent or significantly decreased myogenic potentials evoked by STBs. Conclusions Short tone bursts as well as clicks can evoke myogenic potentials from the SCM. Myogenic potentials evoked by STBs are also probably of vestibular origin.
Li Bin Li Chunhua Chen Jin Wang Shaoxin - One of the best experts on this subject based on the ideXlab platform.
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preservation of great auricular nerve in neck dissection
Chinese Archives of Otolaryngology-head and Neck Surgery, 2006Co-Authors: Li Bin Li Chunhua Chen Jin Wang ShaoxinAbstract:OBJECTIVE To discuss the role of preservation of great auricular nerve during neck dissection in improving the quality of life of the patients and to study the anatomic marks of the great auricular nerve.METHODS Preservation of great auricular nerve during neck dissection was performed in 157 sides of the neck.The feeling changes in auricular and occipital areas were observed.The anatomic relationship between the great auricular nerve and accessory nerve at the posterior margin of the Sternocleidomastoid Muscle was measured in 115 sides.According to whether to follow the operative steps decided in neck dissection,72 sides with same neck dissection levels were divided into group A and group B.The surgical time of the two groups were recorded.RESULTS At the posterior margin of the Sternocleidomastoid Muscle,the great auricular nerve located under the accessory nerve and above the external jugular vein in 100% patients.The distance between the great auricular nerve and accessory nerve was 0.1 to 1.9cm.There was a significant difference in surgical time between the two groups (P0.01).All the cases remained good feeling in the auricular and occipital areas after operation.Only 17 sides had prominent stabbing pain in auricular and occipital skin and restored normally within 6 to 9 months.No local recurrence of tumor was found during follow-up for 3 to 9 years.CONCLUSION Preservation of great auricular nerve during neck dissection can improve the quality of life of the patients.The great auricular nerve is an important anatomic mark in operation.
Suk Min Yoon - One of the best experts on this subject based on the ideXlab platform.
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otalgia caused by a trigger point in the Sternocleidomastoid Muscle a case report
Korean Journal of Anesthesiology, 2004Co-Authors: Seong Ho Chang, Ji Yong Park, Suk Min YoonAbstract:Myofascial pain syndrome is defined as the sensory, motor and autonomic symptoms caused by the myofascial trigger points. The Sternocleidomastoid Muscle is a complex Muscle that frequently contains multiple trigger points. These trigger points cause symptoms that are easily misdiagnosed as other conditions. Earache of unexplained origin is likely to be caused by trigger points in the clavicular division of the sternocleidomastiod Muscle. The authors report a case of earache caused by a trigger point in the Sternocleidomastoid Muscle. A 34 year-old woman had earache without any history of trauma or infection. The patient did not have any abnormal finding by otolaryngologic testing, except for an earache, which had not subsided. On physical examination, trigger points in the clavicular division of the sternocleidomastiod Muscle were found, and the earache was successfully treated by trigger point injections.
