Abstract
To delineate the time course and processing stages of pitch encoding at the level of the supratemporal plane, the present study recorded evoked magnetic fields in response to rippled noise (RN) stimuli. RN largely masks simple tonotopic representations and addresses pitch processing within the temporal domain (periodicity encoding). Four dichotic stimulus types (111 or 133 Hz RN at one ear, white noise to the other one) were applied in randomized order during either visual distraction or selective auditory attention. Strictly periodic signals, noise-like events, and mixtures of both signals served as control conditions. (1) Attention-dependent ear x hemisphere interactions were observed within the time domain of the M50 field, indicating early streaming of auditory information. (2) M100 responses to strictly periodic stimuli were found lateralized to the right hemisphere. Furthermore, the higher-pitched stimuli yielded enhanced activation as compared to the lower-pitch signals (pitch scaling), conceivably reflecting sensory memory operations. (3) Besides right-hemisphere pitch scaling, the relatively late M100 component in association with the RN condition (latency = 136 ms) showed significantly stronger field strengths over th...Continue Reading
References
Aug 18, 1978·Science·J C SmithW S Brown
Aug 1, 1988·The Journal of the Acoustical Society of America·R J Zatorre
Mar 1, 1984·Brain and Language·J J Siditis
Feb 1, 1996·The Journal of the Acoustical Society of America·W A YostS Sheft
Oct 1, 1996·Hearing Research·C PantevE Terhardt
Dec 1, 1996·The Journal of the Acoustical Society of America·W M Hartmann
Mar 1, 1997·The Journal of the Acoustical Society of America·W A Yost
Nov 20, 1998·The Journal of the Acoustical Society of America·M SteinschneiderJ C Arezzo
Nov 27, 1998·Neuroreport·R Ragot, S Crottaz
Mar 20, 1999·Brain Research·H MiyazatoE Garcia-Rill
Apr 15, 1999·Biological Psychiatry·N N Boutros, A Belger
Dec 28, 1999·Brain : a Journal of Neurology·I S JohnsrudeR J Zatorre
Jun 1, 2000·Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society·T P RobertsD Poeppel
Jul 26, 2000·Perception & Psychophysics·S KhalfaL Collet
Sep 21, 2000·Psychiatry and Clinical Neurosciences·H NinomiyaN Tashiro
Feb 24, 2001·Neuroreport·I HertrichH Ackermann
Jun 21, 2001·Neuroreport·H AckermannW Lutzenberger
Oct 30, 2001·The Journal of the Acoustical Society of America·K KrumbholzA Nobbe
Nov 17, 2001·Neuroreport·C K FriedrichS A Kotz
Dec 1, 2001·Audiology & Neuro-otology·B LütkenhönerS Knecht
Jan 5, 2002·NeuroImage·Alexander GutschalkMichael Scherg
Feb 19, 2002·Trends in Cognitive Sciences·Robert J. ZatorreVirginia B. Penhune
Sep 5, 2002·Neuropsychologia·Ingo HertrichHermann Ackermann
Nov 21, 2002·Neuron·Roy D PattersonTimothy D Griffiths
Jun 21, 2003·Cerebral Cortex·K KrumbholzB Lütkenhöner
Aug 12, 2003·Proceedings of the National Academy of Sciences of the United States of America·J D WarrenT D Griffiths
Citations
Sep 14, 2007·Laterality·Alexandra List, Timothy Justus
Jan 27, 2005·Neuroreport·Ingo HertrichHermann Ackermann
Dec 18, 2007·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Claude Alain, Joel S Snyder
Feb 13, 2007·NeuroImage·Oleg KorzyukovNashaat N Boutros
Jan 27, 2006·Journal of Neurophysiology·Nicole BehneAndré Brechmann