Comparison between simultaneously recorded auditory-evoked magnetic fields and potentials elicited by ipsilateral, contralateral and binaural tone burst stimulation.
Comparison between simultaneously recorded auditory-evoked magnetic fields and potentials elicited by ipsilateral, contralateral and binaural tone burst stimulation.
复制标题
同时记录的听觉诱发磁场和同侧、对侧和双耳突发音刺激引起的电位之间的比较。
作者：
C. Pantev;B. Lütkenhöner;M. Hoke;K. Lehnertz
听觉诱发磁场（AEMF）和听觉诱发电位（AEP）主要由三个峰组成，潜伏期分别为50、100和160 ms。对同侧、对侧和双耳刺激的反应进行比较，发现AEP峰值的振幅和潜伏期没有显著差异，而同时记录的AEMF峰值潜伏期比同侧刺激短10 ms，振幅比同侧刺激大约38%。这可能是由于偶极子源的强度、位置（尤其是深度）和方向的差异，不能只考虑从一个位置记录的数据来做出决定。另一个发现是双耳刺激比对侧刺激减少了大约25%的峰值幅度。这一结果表明同侧和对侧通路之间存在某种干扰（“双耳相互作用”）。
Both auditory-evoked magnetic fields (AEMF) and auditory-evoked potentials (AEP) mainly consist of three peaks with latencies of about 50, 100 and 160 ms. Comparison of responses to ipsilateral, contralateral and binaural stimulation yields no significant amplitude or latency differences of the AEP peaks whereas the simultaneously recorded AEMF peaks exhibit a 10 ms shorter latency and an approximately 38% greater amplitude for contralateral versus ipsilateral stimulation. This fact can be due to differences in the strength, location (especially the depth) and the direction of the dipole source, and a decision cannot be made considering the data recorded from just one position. Another finding is that binaural stimulation reduces the peak amplitudes by approximately 25% compared with contralateral stimulation. This result indicates some kind of interference between the ipsilateral and contralateral pathways ('binaural interaction').