Interhemispheric asymmetry in the auditory evoked fields for pure tone stimuli

Kanno, Akira; Nakasato, Nobukazu; Seki, Kazunori; Kawamura, Kurazou; Ohtomo, Satoru; Fujita, Shigekiyo; Fujiwara, Satoru; Yoshimoto, Takashi

doi:10.1016/0013-4694(96)84755-9

Cited by 13 publications

(12 citation statements)

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“…This pattern was found regardless of the group, tone category and ear of presentation. Contralateral dominance reflects the cross-over organisation of the ascending auditory pathway and our result concurs with previous human neuroimaging studies in this regard (e.g., Näätänen and Picton, 1987; Kanno et al., 1996; Langers et al., 2005). …”

Section: Resultssupporting

confidence: 93%

Auditory evoked magnetic fields in individuals with tinnitus

et al. 2013

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Some forms of tinnitus are likely to be perceptual consequences of altered neural activity in the central auditory system triggered by damage to the auditory periphery. Animal studies report changes in the evoked responses after noise exposure or ototoxic drugs in inferior colliculus and auditory cortex. However, human electrophysiological evidence is rather equivocal: increased, reduced or no difference in N1/N1m evoked amplitudes and latencies in tinnitus participants have been reported.The present study used magnetoencephalography to seek evidence for altered evoked responses in people with tinnitus compared to controls (hearing loss matched and normal hearing) in four different stimulus categories (a control tone, a tone corresponding to the audiometric edge, to the dominant tinnitus pitch and a tone within the area of hearing loss). Results revealed that amplitudes of the evoked responses differed depending on the tone category. N1m amplitude to the dominant tinnitus pitch and the frequency within the area of hearing loss were reduced compared to the other two categories. Given that tinnitus pitch is typically within the area of hearing loss, the differences in the evoked responses pattern in tinnitus participants seem to be related more to the hearing loss than to the presence of tinnitus.

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Section: Resultssupporting

confidence: 93%

Auditory evoked magnetic fields in individuals with tinnitus

et al. 2013

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“…In previous studies using tonal stimuli, the right hemisphere was found to exhibit greater N1(m) amplitudes than the left (e.g., Kanno et al, 1996;Fujioka et al, 2003;Seither-Preisler et al, 2003;Soeta and Nakagawa, 2006;Hine and Debener, 2007). These results are not consistent with the present findings regarding the N1m 0 and previous findings regarding the N1 0 .…”

Section: Hemispheric Differencecontrasting

confidence: 84%

Auditory evoked responses in human auditory cortex to the variation of sound intensity in an ongoing tone

Soeta

Nakagawa

2012

Hearing Research

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“…All of these studies focused on asymmetries in the extent of cortical activation or interhemispheric amplitude differences but little has been reported thus far concerning the temporal dynamics in human brain asymmetries. In one of the rare studies about latency differences, Suzuki et al [1997] and Kanno et al [1996] found faster right hemispheric processing for pure tones compared to the left hemisphere in subjects with left as well as right hemispheric language dominance [Kanno et al, 1996;Suzuki et al, 1997]. In other studies, faster processing in the left hemisphere has been shown for complex visual stimuli [Okubo and Nicholls, 2005] while there was no interhemispheric difference in the latency of visual evoked potentials like the N100 [Abe and Kuroiwa, 1990].…”

Section: Discussionmentioning

confidence: 95%

Time‐dependent hemispheric shift of the cortical control of volitional swallowing

Teismann

Dziewas

Steinstraeter³

et al. 2007

Human Brain Mapping

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An important part of the cortical processing of swallowing takes place in the sensorimotor cortex, predominantly in the left hemisphere. However, until now, only deglutition related brain activation with low time resolution exceeding a time interval of 1 s has been reported. In this study, we have examined the chronological sequence of cortical swallowing processing in humans by means of high temporal resolution magnetoencephalography (MEG). The cortical MEG activity was recorded during self-paced volitional swallowing in 10 healthy subjects. Data were analyzed using synthetic aperture magnetometry and the group analysis was performed using a permutation test. Swallowingrelated muscle activity was recorded by electromyography. Within the time interval of 1 s of the most pronounced muscular swallowing execution, the MEG analysis revealed neural activation in the primary sensorimotor cortex. During the first 600 ms, only left hemispheric activation was found, bihemi-

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Interhemispheric asymmetry in the auditory evoked fields for pure tone stimuli

Cited by 13 publications

References 0 publications

Auditory evoked magnetic fields in individuals with tinnitus

Auditory evoked magnetic fields in individuals with tinnitus

Auditory evoked responses in human auditory cortex to the variation of sound intensity in an ongoing tone

Time‐dependent hemispheric shift of the cortical control of volitional swallowing

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