NR ZEQN

AU Saito,T.; Watanabe,Y.; Nemoto,T.; Kasuya,E.; Sakumoto,R.

TI Radiotelemetry recording of electroencephalogram in piglets during rest

QU Physiology and Behavior 2005 Apr 13; 84(5): 725-31

PT journal article

AB A wireless recording system was developed to study the electroencephalogram (EEG) in unrestrained, male Landrace piglets. Under general anesthesia, ball-tipped silver/silver chloride electrodes for EEG recording were implanted onto the dura mater of the parietal and frontal cortex of the piglets. A pair of miniature preamplifiers and transmitters was then mounted on the surface of the skull. To examine whether other bioelectrical activities interfere with the EEG measurements, an electrocardiogram (ECG) or electromyogram (EMG) of the neck was simultaneously recorded with the EEG. Next, wire electrodes for recording movement of the eyelid were implanted with EEG electrodes, and EEG and eyelid movements were simultaneously measured. Power spectral analysis using a Fast Fourier Transformation (FFT) algorithm indicates that EEG was successfully recorded in unrestrained piglets, at rest, during the daytime in the absence of interference from ECG, EMG or eyelid movements. These data indicate the feasibility of using our radiotelemetry system for measurement of EEG under these conditions.

AD Animal Neurophysiology Laboratory, Physiology and Genetic Regulation Department, National Institute of Agrobiological Sciences, Ikenodai, Tsukuba 305-0901, Japan. tsysait@nias.affrc.go.jp

SP englisch

PO USA

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