Recently Minor and co-workers described patients with sound- and pressure-induced vertigo due to dehiscence of bone overlying the superior semicircular canal. Identifying patients with this "new" vestibular entity is important, not only because the symptoms can be very incapacitating, but also because they are surgically treatable. We present symptoms and findings for three such patients. On exposure to sounds, especially in the frequency range 0.5-1 kHz, they showed vertical/torsional eye movements analogous to a stimulation of the superior semicircular canal. They also showed abnormally large sound-induced vestibular-evoked myogenic potentials (VEMP), i.e. the short latency sternomastoid muscle response considered to be of saccular origin. The VEMP also had a low threshold, especially in the frequency range 0.5-1 kHz. However, in response to saccular stimulation by skull taps, i.e. when the middle ear route was bypassed, the VEMP were not enlarged. This suggests that the relation between the ...
The above case study shows a patient presenting with bilaterally normal cVEMP thresholds, a pathologically increased oVEMP amplitude in the right ear only, a low frequency conductive hearing loss in the right ear, and a CT scan interpreted as showing a bilateral dehiscence. Additionally, the patients symptoms did not include all the "classic" SCD symptoms (see Table 1) that typically trigger the suspicion of SCD (i.e., she denied autophony or dizziness in response to loud sounds). Her major symptoms were aural fullness in the right ear and chronic disequilibrium, which reportedly occur in 62-73% of patients with SCD.14,15 Based solely on her symptoms and normal cVEMP thresholds, a diagnosis of SCD would most likely not have been reached and she would have continued to search for an answer to her symptoms, resulting in an increase in healthcare costs as she sought out new specialists. Conversely, relying solely on her CT report would result in a diagnosis of bilateral SCD, which may have caused ...
Provided you are not directly adjacent to a saltwater disposal point, RO brine disposal is problematic and expensive. Brine concentration in traditional reverse osmosis membrane systems is limited by the amount of silica in the feed water. VSEPs vibratory oscillation prevents silica fouling, and thus VSEP is ultimately limited by osmotic pressure, not silica. Because of this unique capability, VSEP from Syngineering Water has become the market leader in non-thermal brine minimisation.. Syngineering Water - VSEP and Brine Minimisation. Call Syngineering Water today for a free evaluation : 1300 662 326. ...
2015.12.12 | п D X u G ĤT Q E g ~ | j |If you cannot view the message, click here.http://www.hklta.org.hk/bbs/forum.php?mod=viewthread&tid=3021 ... [e-News 2015.12.12] п D X u G ĤT Q E g ~ | j | ,HKLTA ׾
2015.12.12 | п D X u G ĤT Q E g ~ | j |If you cannot view the message, click here.http://www.hklta.org.hk/bbs/forum.php?mod=viewthread&tid=3021 ... [e-News 2015.12.12] п D X u G ĤT Q E g ~ | j | ,HKLTA ׾
uzerine.com uzmanlar taraf ndan haz rlanm , zg n ve nitelikli bilginin ger ek adresidir.Uzman oldu unuz veya yak ndan ilgilendi iniz bir konu ba l yla bize ba vurun. uzerine.com at s alt nda tasar m bilgisine ihtiya duymadan kolayca kendi sayfan z haz rlamaya ba lay n.
OBJECTIVE: To systematically review the evidence and make recommendations with regard to diagnostic utility of cervical and ocular vestibular evoked myogenic potentials (cVEMP and oVEMP, respectively). Four questions were asked: Does cVEMP accurately identify superior canal dehiscence syndrome (SCDS)? Does oVEMP accurately identify SCDS? For suspected vestibular symptoms, does cVEMP/oVEMP accurately identify vestibular dysfunction related to the saccule/utricle? For vestibular symptoms, does cVEMP/oVEMP accurately and substantively aid diagnosis of any specific vestibular disorder besides SCDS? METHODS: The guideline panel identified and classified relevant published studies (January 1980-December 2016) according to the 2004 American Academy of Neurology process ...
The summarized symptoms and signs in this case were acute onset of severe, prolonged vertigo, spontaneous nystagmus with horizontal torsional components, attenuation of nystagmus by visual fixation, mild to moderate imbalance, no other accompanying neurologic symptoms or signs, a positive head-impulse test result, unilateral CP, ipsilesional conjugate ocular torsion, and asymmetry in amplitude with no difference in latency on either side by the vestibular-evoked myogenic potential test, all of which are characteristic features of APV. However, our patient had an acute infarct selectively involving the right VN.. Although CP usually indicates a lesion of a peripheral vestibular structure such as the inner ear and the eighth nerve, lesions affecting central vestibular structures such as the root entry zone of the eighth nerve, the proximal portion of the vestibular fascicle, and the VN could also cause CP. In the case of VN, lesions that predominantly affect the medial subnucleus appear to be the ...
Other articles where Sternocleidomastoid muscle is discussed: muscle: Tetrapod musculature: …to form muscles such as sternocleidomastoid, a muscle important for humans in movements of the head and in breathing. In mammals that lose the clavicle, these slips may be further modified to form muscles running from the head to the pectoral limb. Tetrapods, with the exception of mammals, utilize part…
Cervical vestibular evoked myogenic potentials (cVEMPs) recorded over the lower quarter of the sternocleidomastoid (SCM) muscle in normal subjects may have opposite polarity to those recorded over the midpoint. It has thus been suggested that vestibular projections to the lower part of SCM might be excitatory rather than inhibitory. We tested the hypothesis that the SCM muscle receives both inhibitory and excitatory vestibular inputs. We recorded cVEMPs in 10 normal subjects with surface electrodes placed at multiple sites along the anterior (sternal) component of the SCM muscle. We compared several reference sites: sternum, ipsilateral and contralateral earlobes, and contralateral wrist. In five subjects, single motor unit responses were recorded at the upper, middle, and lower parts of the SCM muscle using concentric needle electrodes. The surface cVEMP had the typical positive-negative polarity at the midpoint of the SCM muscle. In all subjects, as the recording electrode was moved toward ...
VSEP Membrane Cleaners In addition to filtration systems, New Logic manufactures a complete line of chemical cleaners designed to maintain maximum flow rates in all VSEP applications.Years of exhaustive research and development by New Logic engineers have resulted in seven chemical cleaners formulated to attack the most stubborn foulants across a wide range of membranes and feed streams.While designed for VSEP membrane filtration systems, these advanced formulas are perfect for cleaning any membrane.To learn more about VSEP Advanced Cleaning Solutions, please choose a link below to visit our sister site While membrane-based separations of liquids from solids have enjoyed increasing popularity over the last 20 years, the technology has an inherent Achilles heel that affects all membrane devices: fouling. This long-term loss in throughput capacity is due primarily to the formation of a boundary layer that builds up naturally on the membranes surface during the filtration process.In addition to ...
We report a case of a 4-week-old female neonate who was admitted to the hospital for a anterior right lump of the neck, perceived by his mother the day before. The mother also noticed a preferential tilting of the head towards right. He was an otherwise full-term healthy baby, with a history of instrumented delivery. There was no fever, trauma or respiratory symptoms/signs. Family history was irrelevant. On examination, the neck swelling was a small firm, partially mobile, no warm on touch and apparently painless mass, with approximately 1.5-2 cm soft tissue mass, attached to the right sternocleidomastoid muscle. There was no restriction of neck movements. Ultrasonography (USG) revealed a 13 mm … ...
Image by/from Image:Gray385.png modified by Uwe Gille The sternocleidomastoid muscle is one of the largest and most superficial cervical muscles. The primary actions of the... ...
[img] SCDS2 Video Plug-in GBATemp Hands-on Impressions [img] Team SuperCard has released a BETA of their Video Plug-in...
I T Gangaidzo, V M Moyo, T Saungweme, H Khumalo, R M Charakupa, Z A R Gomo, M Loyevsky, R Stearman, T La Vaute, E G Enquist, T A Rouault, V R Gordeuk ...
Multisensory convergence and sensorimotor integration are important aspects for the mediation of higher vestibular cognitive functions at the cortical level. In contrast to the integration of vestibulo-visual or vestibulotactile perception, much less is known about the neural mechanism that mediates the integration of vestibularotolith (linear acceleration/ translation/ gravity detection) and auditory processing. Vestibular-otolith and auditory afferents can be simultaneously activated using loud sound pressure stimulation, which is routinely used for testing cervical and ocular vestibular evoked myogenic potentials (VEMPs) in clinical neurotological testing. Due to the simultaneous activation of afferents there is always an auditory confound problem in fMRI studies of the neural topology of these systems. Here, we demonstrate that the auditory confounding problem can be overcome in a novel way that does not require the assumption of simple subtraction and additionally allows detection of ...
Im enjoying these neck appreciation posts and I hope that you are too! For this week I thought it would be nice to show you one of my favourite named parts of the body there is - the sternocleidomastoid muscle. This muscle is pretty big and you will all have felt or seen it, even…
This month David highlights the sternocleidomastoid muscle. Learn where this pair of neck muscles are found, what they do, and what yoga postures use them.
The left platysma (8) has been reflected anteriorly. The fascia which covered the sternocleidomastoid muscle (12) has been cut away but that which encases the submaxillary gland has been retained. Components of the extensive anastomosis between branches of the facial and cutaneous cervical nerves occupy much of the field ...
Integrative neuromuscular treatment of sternocleidomastoid. Anatomy. Joint mobilization. Sequencing of treatment. Classical NMT protocols.
This ebook guide teaches you the muscles that you need to work to make sure that you have excellent posture all day long, and that you will have the benefits
Compared with the current QIBR standard bearing the new QIBR Energy Efficient (E2) cylindrical roller bearings exhibit a friction reduction of up to 85% in axially loaded applications [13] 200 160 120 80 40 0 100 200 300 400 500 Inner ring speed [r/min] Standard bearing e g NJ 2334 EC Energy Efficient (E2) bearing e g E2 NJ 2334 EC ...
by ProCW 7 years ago. You must use at least 3 letters of the previous word.Example p a g e s s e g u e g u s t s g h o s t t o a s tYou do not have to underline the letters that youve used from the word before yours. Ive only done so for demonstrative purposes.Here we go! The first word... ...