Elberling C, Bak C, Kofoed B, Lebech J, Saermark K
Scand Audiol. 1980;9(3):185-90. doi: 10.3109/01050398009076353.
By means of a magnetic sensor, SQUID (Superconducting Quantum-Interference Device) the late acoustically evoked magnetic field was recorded from the right and left side of the skull in 5 humans in response to ipsi- and contralateral 1 kHz tone bursts at 80 dB SPL. The '100 ms' component of the magnetic field has opposite polarity on the two sides of the head and when crossing the primary auditory cortex at the Sylvian fissure in a posterior--anterior track, polarity inversion of this component takes place within a highly localized region. The evoked magnetic field is widely distributed across the scalp and seems to be produced by an equivalent magnetic dipole located in or near the primary auditory cortex. In the present experiment neither right--left hemisphere nor ipsi--contralateral differences could be demonstrated.
通过一个磁传感器——超导量子干涉装置（SQUID），在5名人类受试者中，记录了颅骨左右两侧对同侧和对侧80分贝声压级的1千赫短纯音刺激产生的晚期听觉诱发磁场。磁场的“100毫秒”成分在头部两侧具有相反的极性，当它在颞叶沟处以后-前轨迹穿过初级听觉皮层时，该成分的极性反转发生在一个高度局限的区域内。诱发磁场广泛分布于头皮，似乎是由位于初级听觉皮层或其附近的等效磁偶极产生的。在本实验中，未发现左右半球之间以及同侧-对侧之间存在差异。
