title: The effects of preceding lead-alone and lag-alone click trains on the buildup of echo suppression.
abstract: Spatial perception in echoic environments is influenced by recent acoustic history. For instance, echo suppression becomes more effective or "builds up" with repeated exposure to echoes having a consistent acoustic relationship to a temporally leading sound. Four experiments were conducted to investigate how buildup is affected by prior exposure to unpaired lead-alone or lag-alone click trains. Unpaired trains preceded lead-lag click trains designed to evoke and assay buildup. Listeners reported how many sounds they heard from the echo hemifield during the lead-lag trains. Stimuli were presented in free field (experiments 1 and 4) or dichotically through earphones (experiments 2 and 3). In experiment 1, listeners reported more echoes following a lead-alone train compared to a period of silence. In contrast, listeners reported fewer echoes following a lag-alone train; similar results were observed with earphones. Interestingly, the effects of lag-alone click trains on buildup were qualitatively different when compared to a no-conditioner trial type in experiment 4. Finally, experiment 3 demonstrated that the effects of preceding click trains on buildup cannot be explained by a change in counting strategy or perceived click salience. Together, these findings demonstrate that echo suppression is affected by prior exposure to unpaired stimuli.
authors.affiliation: University of California, Davis Center for Mind and Brain, 267 Cousteau Place, Davis, California 95618.
authors.forename: Christopher W
authors.initials: CW
authors.lastname: Bishop
authors.affiliation: University of California, Davis Center for Mind and Brain, 267 Cousteau Place, Davis, California 95618.
authors.forename: Deepak
authors.initials: D
authors.lastname: Yadav
authors.affiliation: University of California, Davis Center for Mind and Brain, 267 Cousteau Place, Davis, California 95618.
authors.forename: Sam
authors.initials: S
authors.lastname: London
authors.affiliation: University of California, Davis Center for Mind and Brain, 267 Cousteau Place, Davis, California 95618.
authors.forename: Lee M
authors.initials: LM
authors.lastname: Miller
mesh_terms: D000161:Acoustic Stimulation; D000162:Acoustics; D000328:Adult; D003463:Cues; D005260:Female; D006801:Humans; D008297:Male; D009622:Noise / Q000009:adverse effects*; D010470:Perceptual Masking; D011571:Psychoacoustics; D013017:Sound Localization; D013028:Space Perception; D013997:Time Factors; D014732:Vibration; D055815:Young Adult
references.citation: J Acoust Soc Am. 1980 Mar;67(3):953-64
references.pmid: 7358920
references.citation: Arch Otorhinolaryngol. 1979;222(2):91-7
references.pmid: 435170
references.citation: J Acoust Soc Am. 1996 Feb;99(2):1118-23
references.pmid: 8609295
references.citation: J Acoust Soc Am. 1999 Dec;106(6):3578-88
references.pmid: 10615698
references.citation: Electroencephalogr Clin Neurophysiol. 1986 Mar;65(2):150-6
references.pmid: 2419104
references.citation: Hear Res. 1997 Sep;111(1-2):165-76
references.pmid: 9307322
references.citation: J Acoust Soc Am. 1991 Aug;90(2 Pt 1):874-84
references.pmid: 1939892
references.citation: J Acoust Soc Am. 2013 Jan;133(1):EL33-9
references.pmid: 23298015
references.citation: Psychophysiology. 1978 May;15(3):214-20
references.pmid: 663046
references.citation: J Acoust Soc Am. 1993 Apr;93(4 Pt 1):2077-87
references.pmid: 8473620
references.citation: J Acoust Soc Am. 1985 Aug;78(2):524-33
references.pmid: 4031251
references.citation: Am J Psychol. 1949 Jul;62(3):315-36
references.pmid: 18134356
references.citation: J Acoust Soc Am. 1993 May;93(5):2923-32
references.pmid: 8315156
references.citation: Trends Amplif. 2008 Dec;12(4):300-15
references.pmid: 19010794
references.citation: J Acoust Soc Am. 2010 Jul;128(1):291-9
references.pmid: 20649224
references.citation: J Acoust Soc Am. 2006 Dec;120(6):3957-65
references.pmid: 17225422
references.citation: Percept Psychophys. 1998 May;60(4):593-601
references.pmid: 9628992
references.citation: Electroencephalogr Clin Neurophysiol. 1990 Nov-Dec;77(6):458-70
references.pmid: 1701708
references.citation: Electroencephalogr Clin Neurophysiol. 1984 Sep;59(5):411-9
references.pmid: 6205868
references.citation: Percept Psychophys. 1989 Aug;46(2):139-45
references.pmid: 2762101
references.citation: J Acoust Soc Am. 2009 May;125(5):3243-52
references.pmid: 19425667
references.citation: J Acoust Soc Am. 1999 Oct;106(4 Pt 1):1633-54
references.pmid: 10530009
references.citation: J Acoust Soc Am. 2005 Dec;118(6):3804-15
references.pmid: 16419825
references.citation: Am J Otol. 1983 Jan;4(3):226-34
references.pmid: 6829737
references.citation: J Am Acad Audiol. 1992 Nov;3(6):405-9
references.pmid: 1486203
references.citation: J Acoust Soc Am. 2013 May;133(5):2883-98
references.pmid: 23654394
references.citation: Arch Otorhinolaryngol. 1981;233(2):179-87
references.pmid: 7316876
references.citation: J Acoust Soc Am. 2011 Jan;129(1):301-9
references.pmid: 21303011
references.citation: Clin Neurophysiol. 2003 Feb;114(2):366-75
references.pmid: 12559246
references.citation: Curr Biol. 2011 Feb 8;21(3):221-5
references.pmid: 21276724
references.citation: J Acoust Soc Am. 2013 Aug;134(2):EL265-70
references.pmid: 23927235
references.citation: Trends Cogn Sci. 2008 May;12(5):182-6
references.pmid: 18396091
references.citation: Ear Hear. 1996 Dec;17(6):544-51
references.pmid: 8979042
references.citation: J Clin Neurophysiol. 2009 Jun;26(3):167-75
references.pmid: 19424080
references.citation: J Exp Psychol Hum Percept Perform. 2012 Dec;38(6):1371-9
references.pmid: 22545599
references.citation: Neuroreport. 2006 Jul 31;17(11):1133-7
references.pmid: 16837841