Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 조제원 | * |
dc.date.accessioned | 2021-11-10T16:31:04Z | - |
dc.date.available | 2021-11-10T16:31:04Z | - |
dc.date.issued | 2021 | * |
dc.identifier.issn | 0018-9480 | * |
dc.identifier.issn | 1557-9670 | * |
dc.identifier.other | OAK-30138 | * |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/259309 | - |
dc.description.abstract | This article, for the first time, presents the design, fabrication, and measurement results of a novel microwave brain stimulation system enabling efficient probe focusing of rectangular-pulse enveloped 6.5-GHz waves. While the conventional ON/OFF stimulation systems in literature employ low frequencies below 0.5 GHz, the proposed system employs 6.5 GHz that can achieve more spatial energy focusing and a moderate level of energy penetration depth. In the proposed system, the ON/OFF modulated microwave signal is generated by a single chip consisting of a voltage-controlled oscillator (VCO) and power amplifier (PA). The VCO is driven by a switch at the current source to generate modulated signals with over 20-dB isolation between the high and low states. The probe with a center-opened aperture surrounded by a symmetric loading enables low power reflection toward the brain and focuses the field in the square-shaped aperture of 1-mm(2) area. Finally, it is demonstrated that the 20-min stimulation of an in vivo mouse brain using microwave signals with 1-Hz repetitive pulse envelopes and 1% duty cycle enables the normalized firing rate to reach up to 0.2 while the normalized firing rate stays just within +/- 0.05 under no stimulation. This suggests that the proposed brain stimulation system can achieve a dramatic change in the activity of individual hippocampal neurons. | * |
dc.language | English | * |
dc.publisher | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | * |
dc.subject | Probes | * |
dc.subject | Brain stimulation | * |
dc.subject | Voltage-controlled oscillators | * |
dc.subject | Microwave oscillators | * |
dc.subject | Microwave theory and techniques | * |
dc.subject | Microwave circuits | * |
dc.subject | Transistors | * |
dc.subject | Brain stimulation system | * |
dc.subject | microwave circuits | * |
dc.subject | neural probe | * |
dc.subject | neuromodulation | * |
dc.subject | probes | * |
dc.subject | stimulation system | * |
dc.title | 6.5-GHz Brain Stimulation System Using Enhanced Probe Focusing and Switch-Driven Modulation | * |
dc.type | Article | * |
dc.relation.issue | 9 | * |
dc.relation.volume | 69 | * |
dc.relation.index | SCIE | * |
dc.relation.index | SCOPUS | * |
dc.relation.startpage | 4107 | * |
dc.relation.lastpage | 4117 | * |
dc.relation.journaltitle | IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | * |
dc.identifier.doi | 10.1109/TMTT.2021.3075726 | * |
dc.identifier.wosid | WOS:000692231600018 | * |
dc.author.google | Oh, Seongwoog | * |
dc.author.google | Jung, Dahee | * |
dc.author.google | Seo, Taeyoon | * |
dc.author.google | Huh, Yeowool | * |
dc.author.google | Cho, Jeiwon | * |
dc.author.google | Oh, Jungsuek | * |
dc.contributor.scopusid | 조제원(7403536141) | * |
dc.date.modifydate | 20240311133514 | * |