REM sleep and catecholamine excretion: a study in elite athletes

2001 ◽  
Vol 84 (6) ◽  
pp. 521-526 ◽  
Author(s):  
Nikolaus C. Netzer ◽  
David Kristo ◽  
Hartmut Steinle ◽  
Manfred Lehmann ◽  
Kingman P. Strohl
Keyword(s):  
Rem Sleep ◽  
Elite Athletes ◽  
Catecholamine Excretion

Spectral and Topographic Microstructure of Brain Alpha Activity During Drowsiness at Sleep Onset and REM Sleep

2000 ◽  
Vol 14 (3) ◽  
pp. 151-158 ◽  
Author(s):  
José Luis Cantero ◽  
Mercedes Atienza
Keyword(s):  
Rem Sleep ◽  
Spectral Component ◽  
Sleep Onset ◽  
Quantitative Information ◽  
Maximum Energy ◽  
Alpha Activity ◽  
The Other ◽  
Classification Algorithms ◽  
Microstructural Properties ◽  
Brain States

Abstract High-resolution frequency methods were used to describe the spectral and topographic microstructure of human spontaneous alpha activity in the drowsiness (DR) period at sleep onset and during REM sleep. Electroencephalographic (EEG), electrooculographic (EOG), and electromyographic (EMG) measurements were obtained during sleep in 10 healthy volunteer subjects. Spectral microstructure of alpha activity during DR showed a significant maximum power with respect to REM-alpha bursts for the components in the 9.7-10.9 Hz range, whereas REM-alpha bursts reached their maximum statistical differentiation from the sleep onset alpha activity at the components between 7.8 and 8.6 Hz. Furthermore, the maximum energy over occipital regions appeared in a different spectral component in each brain activation state, namely, 10.1 Hz in drowsiness and 8.6 Hz in REM sleep. These results provide quantitative information for differentiating the drowsiness alpha activity and REM-alpha by studying their microstructural properties. On the other hand, these data suggest that the spectral microstructure of alpha activity during sleep onset and REM sleep could be a useful index to implement in automatic classification algorithms in order to improve the differentiation between the two brain states.

The Investigation of Mental Skills on Elite Athletes in Taiwan

2011 ◽  
Author(s):  
Meng-Lin Tsai ◽  
Shih-Chung Cheng ◽  
Yu-Kai Chang ◽  
Chun-Chih Wang
Keyword(s):  
Elite Athletes ◽  
Mental Skills

Dual pathways from religiousness to the virtue of patience versus anxiety among elite athletes.

2020 ◽  
Vol 12 (3) ◽  
pp. 294-303
Author(s):  
Sarah A. Schnitker ◽  
Benjamin J. Houltberg ◽  
Juliette L. Ratchford ◽  
Kenneth T. Wang
Keyword(s):  
Elite Athletes
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