COGNITIVE NEUROSCIENCE AND NEUROPSYCHOLOGYWhat is extinguished in auditory extinction?Deouell, Leon Y.1; Soroker, Nachum2,3 Author Information 1Department of Psychology, The Hebrew University of Jerusalem, Jerusalem 91905, Israel 2Department of Neurological Rehabilitation, Loewenstein Rehabilitation Center, Ra'anana, and Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel 3Corresponding Author: Nachum Soroker, e-mail: [email protected] Acknowledgements: We thank Prof. Shlomo Bentin for his comments on a previous version of the manuscript. This study was supported by a grant from the Israel Science Foundation, founded by the Israel Academy of Sciences and Humanities, and by a European Union grant BMH4-CT96-0819 to COBRAIN project. Received 27 June 2000; accepted 7 July 2000 NeuroReport 11(13):p 3059-3062, September 11, 2000. Buy Abstract Extinction is a frequent sequel of brain damage, whereupon patients disregard (extinguish) a contralesional stimulus, and report only the more ipsilesional stimulus, of a pair of stimuli presented simultaneously. We investigated the possibility of a dissociation between the detection and the identification of extinguished phonemes. Fourteen right hemisphere damaged patients with severe auditory extinction were examined using a paradigm that separated the localization of stimuli and the identification of their phonetic content. Patients reported the identity of left-sided phonemes, while extinguishing them at the same time, in the traditional sense of the term. This dissociation suggests that auditory extinction is more about acknowledging the existence of a stimulus in the contralesional hemispace than about the actual processing of the stimulus. © 2000 Lippincott Williams & Wilkins, Inc.