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The neurophysiological basis of the auditory continuity illusion: a mismatch negativity study.
J Cogn Neurosci. 2003 Jul 01; 15(5):747-58.JC

Abstract

A sound turned off for a short moment can be perceived as continuous if the silent gap is filled with noise. The neural mechanisms underlying this "continuity illusion" were investigated using the mismatch negativity (MMN), an event-related potential reflecting the perception of a sudden change in an otherwise regular stimulus sequence. The MMN was recorded in four conditions using an oddball paradigm. The standards consisted of 500-Hz, 120-msec tone pips that were either physically continuous (Condition 1) or were interrupted by a 40-msec silent gap (Condition 2). The deviants consisted of the interrupted tone, but with the silent gap filled by a burst of bandpass-filtered noise. The noise either occupied the same frequency region as the tone and elicited the continuity illusion (Conditions 1a and 2a), or occupied a remote frequency region and did not elicit the illusion (Conditions 1b and 2b). We predicted that, if the continuity illusion is determined before MMN generation, then, other things being equal, the MMN should be larger in conditions where the deviants are perceived as continuous and the standards as interrupted or vice versa, than when both were perceived as continuous or both interrupted. Consistent with this prediction, we observed an interaction between standard type and noise frequency region, with the MMN being larger in Condition 1a than in Condition 1b, but smaller in Condition 2a than in Condition 2b. Because the subjects were instructed to ignore the tones and watch a silent movie during the recordings, the results indicate that the continuity illusion can occur outside the focus of attention. Furthermore, the latency of the MMN (less than approximately 200 msec postdeviance onset) places an upper limit on the stage of neural processing responsible for the illusion.

Authors+Show Affiliations

MRC Cognition and Brain Sciences Unit, Cambridge, UK.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

12965047

Citation

Micheyl, Christophe, et al. "The Neurophysiological Basis of the Auditory Continuity Illusion: a Mismatch Negativity Study." Journal of Cognitive Neuroscience, vol. 15, no. 5, 2003, pp. 747-58.
Micheyl C, Carlyon RP, Shtyrov Y, et al. The neurophysiological basis of the auditory continuity illusion: a mismatch negativity study. J Cogn Neurosci. 2003;15(5):747-58.
Micheyl, C., Carlyon, R. P., Shtyrov, Y., Hauk, O., Dodson, T., & Pullvermüller, F. (2003). The neurophysiological basis of the auditory continuity illusion: a mismatch negativity study. Journal of Cognitive Neuroscience, 15(5), 747-58.
Micheyl C, et al. The Neurophysiological Basis of the Auditory Continuity Illusion: a Mismatch Negativity Study. J Cogn Neurosci. 2003 Jul 1;15(5):747-58. PubMed PMID: 12965047.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The neurophysiological basis of the auditory continuity illusion: a mismatch negativity study. AU - Micheyl,Christophe, AU - Carlyon,Robert P, AU - Shtyrov,Yury, AU - Hauk,Olaf, AU - Dodson,Tara, AU - Pullvermüller,Friedemann, PY - 2003/9/11/pubmed PY - 2003/10/15/medline PY - 2003/9/11/entrez SP - 747 EP - 58 JF - Journal of cognitive neuroscience JO - J Cogn Neurosci VL - 15 IS - 5 N2 - A sound turned off for a short moment can be perceived as continuous if the silent gap is filled with noise. The neural mechanisms underlying this "continuity illusion" were investigated using the mismatch negativity (MMN), an event-related potential reflecting the perception of a sudden change in an otherwise regular stimulus sequence. The MMN was recorded in four conditions using an oddball paradigm. The standards consisted of 500-Hz, 120-msec tone pips that were either physically continuous (Condition 1) or were interrupted by a 40-msec silent gap (Condition 2). The deviants consisted of the interrupted tone, but with the silent gap filled by a burst of bandpass-filtered noise. The noise either occupied the same frequency region as the tone and elicited the continuity illusion (Conditions 1a and 2a), or occupied a remote frequency region and did not elicit the illusion (Conditions 1b and 2b). We predicted that, if the continuity illusion is determined before MMN generation, then, other things being equal, the MMN should be larger in conditions where the deviants are perceived as continuous and the standards as interrupted or vice versa, than when both were perceived as continuous or both interrupted. Consistent with this prediction, we observed an interaction between standard type and noise frequency region, with the MMN being larger in Condition 1a than in Condition 1b, but smaller in Condition 2a than in Condition 2b. Because the subjects were instructed to ignore the tones and watch a silent movie during the recordings, the results indicate that the continuity illusion can occur outside the focus of attention. Furthermore, the latency of the MMN (less than approximately 200 msec postdeviance onset) places an upper limit on the stage of neural processing responsible for the illusion. SN - 0898-929X UR - https://www.unboundmedicine.com/medline/citation/12965047/The_neurophysiological_basis_of_the_auditory_continuity_illusion:_a_mismatch_negativity_study_ L2 - https://www.mitpressjournals.org/doi/10.1162/089892903322307456?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -