Relationship Between Hippocampal Theta-Wave Frequency and Emotional Behaviors in Rabbits Produced With Stresses or Psychotropic Drugs
Access this Article
Search this Article
The hippocampal EEG power spectra of rabbits were analyzed to clarify the relationship between the theta-wave and emotionality. The relative power of T2 (6.0 – 7.9 Hz) / T1 (4.0 – 5.9 Hz) represented the index of theta-wave change. Emotional excitement (produced with novelty stress or methamphetamine) or suppression (produced with restraint stress or reserpine) increased or decreased T2/T1 ratios within around ±1 Hz changes. Furthermore, the imaging patterns of the peak feature make possible detailed characterization of emotional states. These results suggest that the hippocampus finely adjusts the theta-wave on a ±1 Hz level, with a fine balance of voltage, in response to the emotional activity.
- The Japanese Journal of Pharmacology
The Japanese Journal of Pharmacology 76(1), 125-127, 1998-01
The Japanese Pharmacological Society