3) Suzuki K, Kodama N, Sasaki T, et al: Intraoperative monitoring of blood flow insufficiency in the anterior choroidal artery during aneurysm surgery. J Neurosurg 98: 507-514, 2003
4) Watanabe K, Watanabe T, Takahashi A, et al: Transcranial electrical stimulation through screw electrodes for intraoperative monitoring of motor evoked potentials. Technical note. J Neurosurg 100: 155-160, 2004