[Rhythmic brain activity in sleeping bees].
In honeybees, which are in a sleep-like state of rest the neuronal activity can be recorded in brain regions where memory traces are stored including the mushroom bodies. During nocturnal resting periods short episodes occurred during which the overall spike activity was markedly increased. In addition, ongoing rhythmic variations of spike rate could be recorded. The variations covered 2 frequency bands within the range of 0.4 Hz to 1.2 Hz. Periodical variations of spike rate were present when no visible antennal movements occurred and also when accompanied by spontaneous antennal twitches or during swaying movement of the antennae. Swaying movements took place at the end of short antennal movement episodes with a frequency that corresponded to the periodical variations in spike rate. Thus, there may be a relation between episodes of antennal movements and rhythmic spike activity recorded in the mushroom bodies during episodes of antennal immobility.
Schuppe
H
H
Institut für Zoologie, Technischen Hochschule Darmstadt, Deutschland.
D000818:Animals; D001143:Arousal / Q000502:physiology; D001516:Bees / Q000502:physiology*; D001683:Biological Clocks / Q000502:physiology*; D001921:Brain / Q000502:physiology*; D002940:Circadian Rhythm / Q000502:physiology*; D005071:Evoked Potentials / Q000502:physiology; D005260:Female; D011939:Mental Recall / Q000502:physiology; D009474:Neurons / Q000502:physiology; D012890:Sleep / Q000502:physiology*