PMID- 26520291
OWN - NLM
STAT- MEDLINE
DCOM- 20160922
LR  - 20151102
IS  - 1520-8524 (Electronic)
IS  - 0001-4966 (Linking)
VI  - 138
IP  - 4
DP  - 2015 Oct
TI  - The precedence effect with increased lag level.
PG  - 2079-89
LID - 10.1121/1.4929940 [doi]
AB  - When a pair of sounds arrive from different directions with a sufficiently short 
      delay between them, listeners hear a perceptually fused image with a perceived 
      location that is dominated by the first arriving sound. This is called the 
      precedence effect. To test the limits of this phenomenon, 200-ms noise stimuli 
      were presented over headphones to model a temporally overlapping direct sound 
      (lead) with a single reflection (lag) at inter-stimulus intervals (ISIs) of 
      0-5 ms. Lag intensity exceeded that of the lead by 0-10 dB. Results for 16 
      listeners show that lateralization shifted from the position of the lead towards 
      the lag as lag level increased. Response variability also increased with lag 
      level. An oscillatory pattern emerged across ISIs as lag level increased, to a 
      degree that varied greatly between listeners. Analysis of modeled binaural cues 
      suggests that these oscillatory patterns are correlated with ILDs produced by the 
      physical interference of lead and lag during the ongoing portion of the stimulus, 
      especially in the 764-Hz frequency band. Different listeners apparently weighted 
      cues from the onset versus ongoing portions of the stimulus differently, as 
      evidenced by the varying degree of influence the ongoing ILD cues had on 
      listeners' perceived lateralization.
FAU - Pastore, M Torben
AU  - Pastore MT
AD  - Center for Cognition, Communication and Culture, School of Architecture, 
      Rensselaer Polytechnic Institute, Troy, New York 12180, USA.
FAU - Braasch, Jonas
AU  - Braasch J
AD  - Center for Cognition, Communication and Culture, School of Architecture, 
      Rensselaer Polytechnic Institute, Troy, New York 12180, USA.
LA  - eng
PT  - Comparative Study
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PT  - Research Support, U.S. Gov't, Non-P.H.S.
PL  - United States
TA  - J Acoust Soc Am
JT  - The Journal of the Acoustical Society of America
JID - 7503051
SB  - IM
MH  - Acoustic Stimulation
MH  - Adult
MH  - Cues
MH  - Female
MH  - Humans
MH  - Individuality
MH  - Male
MH  - Middle Aged
MH  - Psychoacoustics
MH  - Sound
MH  - Sound Localization/*physiology
MH  - Time Factors
MH  - Young Adult
EDAT- 2015/11/02 06:00
MHDA- 2016/09/23 06:00
CRDT- 2015/11/02 06:00
PHST- 2015/11/02 06:00 [entrez]
PHST- 2015/11/02 06:00 [pubmed]
PHST- 2016/09/23 06:00 [medline]
AID - 10.1121/1.4929940 [doi]
PST - ppublish
SO  - J Acoust Soc Am. 2015 Oct;138(4):2079-89. doi: 10.1121/1.4929940.