کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9436563 | 1615696 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Auditory evoked magnetic fields in relation to bandwidth variations of bandpass noise
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کلمات کلیدی
ACFECDRMSN1mAEFanalysis of variance - تحلیل واریانسANOVA - تحلیل واریانس Analysis of varianceequivalent current dipole - دو قطبی معادل فعلیroot-mean-square - ریشه متوسط مربعauditory evoked field - سمعک مزاحمAuditory evoked response - شنوایی پاسخی را تحریک می کندAutocorrelation function - عملکرد ارتباط خودکارmagnetoencephalography - مغناطیس مغز
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
سیستم های حسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Auditory evoked magnetic fields in relation to the bandwidth of bandpass noise were examined by magnetoencephalography (MEG). Pure tone and bandpass noises with center frequencies of 500, 1000 or 2000 Hz were used as the auditory signals. All source signals had the sound pressure level set at 74 dB. The stimulus duration was 0.5 s, with rise and fall ramps of 10 ms. Eight volunteers with normal hearing took part in the study. Auditory evoked fields were recorded using a neuromagnetometer in a magnetically-shielded room. The results showed that the peak amplitude of N1m, which was found above the left and right temporal lobes around 100 ms after the stimulus onset, decreased with increasing bandwidth of the bandpass noise. The latency and estimated equivalent current dipole (ECD) locations of N1m did not show any systematic variation as a function of the bandwidth for any of the center frequencies.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Hearing Research - Volume 202, Issues 1â2, April 2005, Pages 47-54
Journal: Hearing Research - Volume 202, Issues 1â2, April 2005, Pages 47-54
نویسندگان
Yoshiharu Soeta, Seiji Nakagawa, Mitsuo Tonoike,