The mismatch negativity to frequency deviants during the transition from wakefulness to sleep
Canadian Journal of Experimental Psychology/Revue canadienne de psychologie expérimentale (2000) - Comment
doi: 10.1037/h0087343  issn: 1878-7290  issn: 1196-1961  pubmed: 11195714 

Merav Sabri, Duncan R. De Lugt, Kenneth B. Campbell