Volgens een studie van Le Bon en collega's zijn de deltagolven minder intensief in ME/CVS.
Deltagolven zijn kenmerkend voor fase 3 en 4 van de niet-REM-slaap (de diepe slaap).
Minder diepe slaap in ME/CVS werd in 2007 door van Hoof en anderen gerapporteerd.
Ultra-slow delta power in chronic fatigue syndrome.
Psychiatry Res. 2012 Jul 6. doi: 10.1016/j.psychres.2012.06.027
Le Bon O, Neu D, Berquin Y, Lanquart JP, Hoffmann R, Mairesse O, Armitage R.
Received 19 November 2011.
Revised 3 May 2012.
Accepted 20 June 2012.
Available online 6 July 2012.
The role of sleep in patients diagnosed with chronic fatigue syndrome is not fully understood.
Studies of polysomnographic and quantitative sleep electroencephalographic (EEG) measures
have provided contradictory results,
with few consistent findings in patients with Chronic Fatigue Syndrome (CFS).
For the most part, it appears that
delta EEG activity may provide the best discrimination between patients and healthy controls.
A closer examination of delta activity
in the very slow end of the frequency band
is still to be considered in assessing sleep in CFS.
The present preliminary study compared
absolute and relative spectral power
in conventional EEG bands and ultra-slow delta (0.5-0.8Hz)
between 10 young female patients with the CFS and
healthy controls without psychopathology.
In absolute measures,
the ultra-slow delta power was lower in CFS,
about one-fifth that of the control group.
Other frequency bands did not differ between groups.
Relative ultra-slow delta power was lower in patients than in controls.
CFS is associated with lower ultra-slow (0.5-0.8Hz) delta power,
underscoring the importance of looking beyond conventional EEG frequency bands.
From a neurophysiological standpoint,
lower ultra-slow wave power may indicate
abnormalities in the oscillations in membrane potential or
a failure in neural recruitment in those with CFS.
AlphaĖdelta; Sleep; SWA; Sleepiness