Activation of the auditory cortex by ultrasound

Hosoi, Hiroshi; Imaizumi, Satoshi; Sakaguchi, Takahiro; Tonoike, Mitsuo; Murata, Kiyotaka

doi:10.1016/s0140-6736(05)78683-9

Cited by 91 publications

(55 citation statements)

References 3 publications

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“…It was found that each sound included audible and ultrasonic frequencies. Ultrasound can be perceived through bone conduction [9]. Further research on the sound characteristics and quality of dental drills is being conducted.…”

Section: Discussionmentioning

confidence: 99%

A questionnaire survey on the effect of the sound of dental drills on the feeling of patients in dental clinics

Yamada

Ebisu

Kuwano

2006

Acoust. Sci. & Tech.

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Section: Discussionmentioning

confidence: 99%

A questionnaire survey on the effect of the sound of dental drills on the feeling of patients in dental clinics

Yamada

Ebisu

Kuwano

2006

Acoust. Sci. & Tech.

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“…In previous studies on USP at the central level, neural activation was observed with magnetoencephalography and positron emission tomography in the auditory cortex, not in the somatosensory cortex (Hosoi et al, 1998;Imaizumi et al, 2001), which objectively establishes that BCU is perceived as an auditory sensation. Furthermore, several studies have demonstrated the characteristics of N1m for BCU in comparison to that for ACAS (Nishimura et al, 2002;Yamashita et al, 2008;Nishimura et al, 2009).…”

Section: Introductionmentioning

confidence: 66%

“…The most interesting characteristic of BCU is its perception in the hearing impaired. Several reports have indicated that some profoundly deaf individuals were able to perceive BCU (Lenhardt et al, 1991;Hosoi et al, 1998;Imaizumi et al, 2001), an observation which cannot be explained by nonlinear theory. If the ultrasonic perception (USP) is utilized in a hearing device, it might provide more benefit to the profoundly deaf than existing hearing aids or cochlear implants.…”

Section: Introductionmentioning

confidence: 99%

Peripheral perception mechanism of ultrasonic hearing

et al. 2011

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“…One such difference was the ability to perceive ultrasonic sound (20 to 120 kHz) when presented by BC but not through AC (Hosoi et al, 1998). The mechanisms for detection of BC ultrasound was not completely clarified and several possible explanations have been provided, such as demodulation due to non-linearities in the skull bone (Haeff et al, 1963) or non-linear processing in the cochlea (Nishimura et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Loudness functions with air and bone conduction stimulation in normal-hearing subjects using a categorical loudness scaling procedure

Stenfelt

Zeitooni

2013

Hearing Research

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Loudness functions with air and bone conduction stimulation in normal-hearing subjects using a categorical loudness scaling procedure, 2013, Hearing Research, (301) AbstractIn a previous study (Stenfelt et al., 2002) a loudness balance test between bone conducted (BC) sound and air conducted (AC) sound was performed at frequencies between 0.25 and 4 kHz and at levels corresponding to 30 to 80 dB HL. The main outcome of that study was that for maintaining equal loudness, the level increase of sound with BC stimulation was less than that of AC stimulation with a ratio between 0.8 and 0.93 dB/dB. However, because it was shown that AC and BC tone cancellation was independent of the stimulation level, the loudness level difference did not originate in differences in basilar membrane stimulation. Therefore, it was speculated that the result could be due to the loudness estimation procedure. To investigate this further, another loudness estimation method (adaptive categorical loudness scaling) was here employed in 20 normal-hearing subjects.The loudness of a low-frequency and a high-frequency noise burst was estimated using the adaptive categorical loudness scaling technique when the stimulation was bilaterally by AC or BC. The sounds where rated on an 11-point scale between inaudible and too loud. The total dynamic range for these sounds was over 80 dB when presented by AC (between inaudible and too loud) and the loudness functions were similar for the low and the high-frequency stimulation. When the stimulation was by BC the loudness functions were steeper and the ratios between the slopes of the AC and BC loudness functions were 0.88 for the low-frequency sound and 0.92 for the high-frequency sound.These results were almost equal to the previous published results using the equal loudness estimation procedure, and it was unlikely that the outcome stems from the loudness estimation procedure itself. One possible mechanism for the result was loudness integration of multi-sensory input. However, no conclusive evidence for such a mechanism could be given by the present study.Keywords: Bone conduction, loudness, categorical loudness scaling, multi-sensory integration.3 Highlights• The loudness function was steeper when stimulation was by BC than by AC• The difference between the loudness function slopes was greatest at low frequencies• The average ratios between AC and BC loudness function slopes were between 0.88 and 0.92• The difference between the AC and BC loudness functions were found at both low and high intensities.

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Activation of the auditory cortex by ultrasound

Cited by 91 publications

References 3 publications

A questionnaire survey on the effect of the sound of dental drills on the feeling of patients in dental clinics

A questionnaire survey on the effect of the sound of dental drills on the feeling of patients in dental clinics

Peripheral perception mechanism of ultrasonic hearing

Loudness functions with air and bone conduction stimulation in normal-hearing subjects using a categorical loudness scaling procedure

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