Title: Detection of Instantaneous Frequency in EEG Using Phase Locked Loop(II)
Authors: 林塾倫
Lin, Shu-Lun
羅佩禎
Luo, Pei-Zhen
電控工程研究所
Keywords: 鎖相迴路;單邊旁頻帶;電機工程;控制工程;PLL;SSB;ELECTRICAL-ENGINEERING;CONTROL-ENGINEERING
Issue Date: 1997
Abstract: In this thesis, we investigate the feasibility of the phase-
locked-loop (PLL) circuit in detection of the instantaneous
frequency of EEG (electroencephalograph) signals. The PLL has
been successfully applied to the high-frequency and signal-
component (at a given time instant) sinusoidal signals for the
time-varying frequency tracking. However, the EEG is a low-
frequency and multi-component signals. To adapt the PLL for
tracking the time-varying frequency of EEG, we move the EEG
frequency spectrum to a much higher frequency region by applying
the single-sideband-modulation (SSB) to EEG. The performance of
PLL in the low-frequency and high-frequency cases are studied
and compared by the computer simulation and hardware
implementation. Results of frequency detection via the hardware
implementation of PLL are shown to be in agreement with which of
computer simulation. The study shows that a modification of the
PLL enables the detection of the time-varying frequency of EEG.
URI: http://140.113.39.130/cdrfb3/record/nctu/#NT864591005
http://hdl.handle.net/11536/63651
Appears in Collections:Thesis