NDLI: Characteristics of thalamic multi-unit activity and EEG during recovery from asphyxia

Content Provider	IEEE Xplore Digital Library
Author	Muthuswamy, J. Chao, J.K.T. Sherman, D. Thakor, N.V.
Copyright Year	1997
Description	Author affiliation: Dept. of Biomed. Eng., Johns Hopkins Univ., Baltimore, MD, USA (Muthuswamy, J.)
Abstract	Rhythmic cortical activity has been shown to have thalamic origin during high voltage spindles in some awake immobile rats. It was also found that EEG showed burst suppression patterns during recovery from a hypoxic/asphyxic insult to the brain. These have been shown to be prognostic of the neurological outcome after the injury. Some of these EEG burst patterns were rhythmic. Therefore, it was hypothesized that these rhythmic patterns also had a thalamic origin. Adult male Wistar rats (n=5) under sodium pentobarbital anesthesia were made to undergo a three minute period of asphyxia and then resuscitated. Extra-cellular activity from the ventral posterior medial nucleus was monitored. Cortical EEG was monitored bilaterally over the parietal region. Early recovery period in 4 of the 5 animals was characterized by episodes of sustained periodic discharges in the thalamus which correlated with periodic activity in the EEG. Thus, preliminary evidence indicates thalamic origins for the rhythmic EEG burst patterns observed during recovery from an asphyxic injury.
Starting Page	2149
Ending Page	2150
File Size	164908
Page Count	2
File Format	PDF
ISBN	0780342623
ISSN	1094687X
DOI	10.1109/IEMBS.1997.758779
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-10-30
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electroencephalography Asphyxia Animals Low pass filters Rats Monitoring Frequency Voltage Injuries Electrodes
Content Type	Text
Resource Type	Article

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