Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology
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The present study examined the differential effects of voice auditory feedback perturbation direction and magnitude on voice fundamental frequency (F(0)) responses and event-related potentials (ERPs) from EEG electrodes on the scalp. ⋯ The findings of interactive effects between the magnitude and direction of voice feedback pitch perturbation on N1 and P2 ERP components indicate that the neural mechanisms underlying error detection and correction in voice pitch auditory feedback are differentially sensitive to both the magnitude and direction of pitch perturbations.
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To determine whether sleepiness and its evolution over sustained wakefulness could be reversed by nasal continuous positive airway pressure (CPAP) therapy in patients with obstructive sleep apnea-hypopnea syndrome (OSAHS). ⋯ CPAP influences the EEG's time course over sustained wakefulness in a frequency-specific manner in OSAHS patients.