Abstract
Long-term preclinical study available extracranial brain activator (ECBA) system, ECBAv2, is proposed for the non-anesthetic canine models. The titanium-packaged module shows enhanced durability, even after a year of implantation in the scalp. In addition, the wearable helmet type base station provides a stable experimental environment without anesthesia. In this work, HFS stimulation is induced to six canine models for 30 minutes every day over 4 weeks (10Hz, 40Hz and no stimulation for each pair of subjects). Pre- and post-HFS stimulation PET-CT image shows remarkable increases of glucose metabolism in the temporal and parietal lobes. Moreover, both the 40-Hz and 10-Hz groups shows noticeable increase and the former group has more increments than the latter. Our results establish that HFS stimulation definitely worked as facilitating brain activity which may affect memory and sensory skills, respectively.
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