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SIIA Público
SISTEMA INTEGRAL DE INFORMACIÓN ACADÉMICA - PÚBLICO
Título del libro: 2nd International Conference On Electrical And Electronics Engineering, Iceee And Xi Conference On Electrical Engineering, Cie 2005 Título del capítulo: Crayfish brain states characterization with wavelet transform
Behavioral and electrophysiological experiments show that crayfish have
periods of rest with characteristics similar to sleep in vertebrates, a
stereotyped body position, high threshold to mechanical stimuli, and
specific brain electrical signals. The aim of this work is to
characterize the brain electrical signals associated with sleep in
crayfish. Electrical and behavioral recordings from individual crayfish
were performed continuously during 24 hours. Videotapes from crayfish in
aquaria under control conditions show three different behaviors: i)
standing up, ii) lying on one side against the surface of the water, and
iii) crouched and motionless. Brain electrical activity was different
for each one of these positions. Wavelet analysis of brain electrical
records show high power at all frequencies in the standing up crayfish,
a decrease in the power of all frequencies, mainly for 30 to 45 Hz band,
in the animal lying on one side (sleeping) and intermediate values for
the crouched crayfish, the characteristics of this latter activity
depended on the previous positions sequence.
