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Reversible brain hyperthermia during audiogenic seizures in rats.
Acta Physiologica Polonica
|March 1, 1979
Summary
Audiogenic seizures in rats caused reversible brain hyperthermia, similar to intense physical activity. Brain temperature remained below 41°C in a thermoneutral environment during these seizure events.
Area of Science:
- Neuroscience
- Physiology
- Animal Behavior
Background:
- Audiogenic seizures are a model for studying epilepsy and related neurological phenomena.
- Brain temperature fluctuations can impact neuronal function and seizure susceptibility.
Purpose of the Study:
- To investigate the changes in brain temperature during audiogenic seizures in rats.
- To compare brain temperature during seizures with that during general locomotor activity.
Main Methods:
- Chronically implanted thermocouples and epidural EEG electrodes were used in rats with inborn audiogenic susceptibility.
- Audiogenic seizures were induced using an electric bell (approx. 100 dB).
- Simultaneous recording of EEG and brain temperature (accuracy 0.05°C) in freely moving animals.
Main Results:
- Brain temperature increases during audiogenic seizures were comparable to those during intensive locomotor activity.
- In a thermoneutral environment, brain temperature did not exceed 41°C, even during seizures.
- The observed hyperthermia was reversible.
Conclusions:
- Audiogenic seizures induce a reversible hyperthermia in rats.
- The magnitude of temperature increase is similar to that observed during strenuous physical activity.
- These findings contribute to understanding the physiological responses associated with seizures.