EEG spectral power changes before, during and after obstructive sleep apneas
نویسندگان
چکیده
Obstructive Sleep Apnea Syndrome (OSAS) is a very common sleep disorder that is associated with several neurocognitive impairments. The present study aims to assess the power spectral density before, during and after apnea episodes, through the use of autoregressive modeling of the electroencephalographic (EEG) multivariate signal obtained with Polysomnography. The results demonstrate that there is a significant decrease in the EEG power in the delta band during OSAS that does not totally recover immediately after the episode. Since delta waves are linked to learning and plasticity processes, it is hypothesized that decreased delta power during the episode may contribute to the cognitive deterioration in patients with OSAS.
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