Please use this identifier to cite or link to this item: https://repositorio.unifesp.br/handle/11600/43023
Title: THETA-WAVES AND BEHAVIORAL MANIFESTATIONS OF ALERTNESS AND DREAMING ACTIVITY IN THE RAT
Authors: Valle, Angela Cristina do [UNIFESP]
Timo-Iaria, César [UNIFESP]
Fraga, J. L.
Sameshima, K.
Yamashita, R.
Universidade de São Paulo (USP)
Universidade Federal de São Paulo (UNIFESP)
Keywords: SLEEP
ALERTNESS
ATTENTION
DESYNCHRONIZED SLEEP
THETA-WAVES
CONSCIOUSNESS
Issue Date: 1-Jan-1992
Publisher: Assoc Bras Divulg Cientifica
Citation: Brazilian Journal Of Medical And Biological Research. Sao Paulo: Assoc Bras Divulg Cientifica, v. 25, n. 7, p. 745-749, 1992.
Abstract: Electro-oscillographic recordings show that when rats wake up, behavioral manifestations such as head dorsal extension and snout and eye movements (which occur in this sequence), occasionally followed by brief ear and limb twitches, are preceded by and are simultaneous with theta waves (around 6.5 Hz in frequency) in neocortical areas 3 and 17 and in the hippocampus. Heart rate increases when the animal passes from synchronized sleep to relaxed wakefulness to exploratory behavior. During desynchronized steep theta waves, similar to those found during alertness, usually precede and are simultaneous with rostrum and eye movements and brief eat and limb twitches. Heart rate also increases during dreaming activity. A high degree of coherence (near 1.0) was found among theta bursts in different hippocampal areas in both highly attentive alertness and dreaming. It is suggested that theta waves are related to attention as part of some kinds of behavior and of the process of dream shaping and expression, both characterized by consciousness.
URI: http://repositorio.unifesp.br/11600/43023
ISSN: 0100-879X
Appears in Collections:Artigo

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