Brain rhythms

As can be seen from Fig. 30-32, neurons send "trains" of spikes down their axons. These form synapses with dendrites, usually on dendritic spikes, of a postsynaptic cell.593,1007-1009 However, each such cell typically receives input from thousands of other neurons. At any moment most of these are probably "silent," but others are sending trains of impulses. Among the important questions are "How does the postsynaptic neuron know whether to fire or not " and "What kinds of information, if any, are encoded in the trains of impulses both in the presynaptic inputs and in the output of the postsynaptic neuron "10101011 Part of the answer to the first question is probably that firing occurs if two or more input impulses arrive synchronously,10101012-1014 and if there are not too many inhibitory impulses that damp the response. In the hippocampus a network of neurons electrically coupled via gap junctions may be synchronized to the theta and gamma brain rhythms by high-frequency (150-200 Hz) oscillations.988 See also Fig. 30-15. 

Bawin, S. M. Gavalas-Medici, R. Adey, W. R. Effects of modulated very high frequency fields on specific brain rhythms in cats. Brain Res. 1973, 58, 365-384. 

M. G. Rosenblum and A. S. Pikovsky. Delayed feedback control of collective synchrony An approach to suppression of pathological brain rhythms. Phys. Rev. E., 70 041904, 2004. 

FIGURE 17.43 Wavefonn appearances of four brain rhythms in order of increasing frequency. 

Effects of Physical Fatigue onto Brain Rhythms... 

This paper attempts to study the physical fatigue effects on to the EEG data from the perspective of brain rhythm using the CAR as well as the CSD to enhance the EEG data. 

S. Grossberg, The Adaptive Brain I Cognition, Learning, Reinforcement, and Rhythm, and The Adaptive Brain II Vision, Speech, Language, and Motor Control, Else-vier-North-Holland, Amsterdam (1986). 

T No A PKA Brain (neuron), adrenal (medulla) Neurotransmission, synaptic plasticity, LTP, memory,circadian rhythm... 

Brain structure below the thalamus and main portion of the ventral region of the diencephalon, controlling homeostatic and nonhomeostatic basic body and brain functions, including circadian and feeding rhythms, energy metabolism, thermogenesis, sympathoadrenal, and neuroendocrine outflow (secretion of hormones by the pituitary gland), behavioral state and memory functions. 

Nagayama H., Takagi A., Nakamura E., Yoshida H., Takahashi R. (1978). Circadian susceptibility rhythm to apomorphine in the brain. Commun. PsychopharmacoL 2(4), 30110. 

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