A New Recognition Method for the Auditory Evoked Magnetic Fields

Figure 9

The energy of the single trial AEFs for 274 sensors. (a) The signal energy for each single trail AEF and each channel. For each single trial AEF, the power of 274-channel signals is calculated and displayed. The x-coordinate represents the channel number, the y-coordinate represents single trial, and the z-coordinate represents the signal power. The red dots indicate sensors located in the auditory part of the temporal lobe. In the 93th, 94th, and 112th trials, respectively, MRT31 channel, MRT41 channel, and MRT51 channel detect signals with very high power. (b) The energy of the remaining signals. After deleting the 93th, 94th, and 112th trials’ data, the remaining signal energy shows a more random distribution. The red dots indicate signals generated by the auditory part of the temporal lobe.

(a)

(b)