Abstract
In the present study Tsallis and Renyi entropy methods were used to study the electric activity of brain following hypoxicischemic (HI) injury. We investigated the performances of these parameterized information measures in describing the electroencephalogram (EEG) signal of controlled experimental animal HI injury. The results show that (a): compared with Shannon and Renyi entropy, the parameterized Tsallis entropy acts like a spatial filter and the information rate can either tune to long range rhythms or to short abrupt changes, such as bursts or spikes during the beginning of recovery, by the entropic index q; (b): Renyi entropy is a compact and predictive indicator for monitoring the physiological changes during the recovery of brain injury. There is a reduction in the Renyi entropy after brain injury followed by a gradual recovery upon resuscitation.
Original language | English (US) |
---|---|
Pages (from-to) | 354-361 |
Number of pages | 8 |
Journal | Physics Letters, Section A: General, Atomic and Solid State Physics |
Volume | 314 |
Issue number | 5-6 |
DOIs | |
State | Published - Aug 11 2003 |
Keywords
- Brain injury
- EEG
- Entropy
- Hypoxia
- Ischemia
- Renyi
- Tsallis
ASJC Scopus subject areas
- General Physics and Astronomy