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Standards of Practice Committee of the American Sleep Disor-ders Association Practice parameters for the Use of Polysom-nography in the Evaluation of Insomnia, 1995.

has been cited by the following article:

• TITLE: Electroencephalographic Abnormalities in Patients with Idiopathic Insomnia

  AUTHORS: Debora Yoaly Arana Lechuga, Oscar Sánchez Escandón, Miguel Collado Corona, Carlos Castillo Montoya, González Robles R., Anabel Jiménez Anguiano, Oscar Prospero García, Javier Velázquez Moctezuma

  KEYWORDS: Irritative Activity, Idiopathic Insomnia, Cyclic Alternating Pattern

  JOURNAL NAME: Neuroscience and Medicine, Vol.2 No.3, September 27, 2011

  ABSTRACT: Objective: The main goal of the present research is to describe the electroencephalographic activity during sleep and the cyclic alternating pattern (CAP) on idiopathic insomniac patients. Methods: 22 idiopathic insomnia patients were included. Sleep recording included: fully conventional EEG recording (32 electrodes, with 16 channels getting ipsilateral bipolar recordings), EOG, EMG, EKG, thoracic and abdominal respiratory movements, nasal flow and oximetry. Results: Out of the 22 registered patients, 10 (45%) showed no electroencephalographic alteration, while 12 (55%) exhibited an electroencephalographic alteration (irritative activity). Concerning PSG variables, significant differences between groups (no EEG alteration and EEG alterations) were detected in: sleep latency, total sleep time, total wake time, sleep efficiency, light sleep percentage, slow waves sleep percentage and on the sub type A1 index of the cyclic alternant pattern CAP. Conclusions: The present data strongly suggest that within the population diagnosed with idiopathic insomnia, there is a subgroup in which the electroencephalographic alterations may play a critical role as the source of the sleep abnormality.