PMID- 8483703
OWN - NLM
STAT- MEDLINE
DCOM- 19930603
LR  - 20190821
IS  - 0031-5117 (Print)
IS  - 0031-5117 (Linking)
VI  - 53
IP  - 4
DP  - 1993 Apr
TI  - Feature processing during high-rate auditory selective attention.
PG  - 391-402
AB  - Auditory event-related brain potentials (ERPs) and reaction times were analyzed 
      in a selective attention task in which subjects attended to tone pips presented 
      at high rates (interstimulus intervals [ISIs] of 40-200 msec). Subjects responded 
      to infrequent target tones of a specified frequency (250 or 4000 Hz) and location 
      (left or right ear) that were louder than otherwise identical tones presented 
      randomly to the left and right ears. Negative difference (Nd) waves were isolated 
      by subtracting ERPs to tones with no target features from ERPs to the same tones 
      when they shared target location, frequency, or both frequency and location cues. 
      Nd waves began 60-70 msec after tone onset and lasted until 250-350 msec after 
      tone onset, even for tones with single attended cues. The duration of Nd waves 
      exceeded the ISIs between successive tones, implying that several stimuli 
      underwent concurrent analysis. Nd waves associated with frequency processing had 
      scalp distributions different from those associated with location processing, 
      implying that the features were analyzed in distinct cortical areas. Nd waves 
      specific to auditory feature conjunction were isolated. These began at latencies 
      of 110-120 msec, some 30-40 msec after the Nds to single features. The relative 
      timing of the different Nd waves suggests that auditory feature conjunction 
      begins after a brief parallel analysis of individual features but before feature 
      analysis is complete.
FAU - Woods, D L
AU  - Woods DL
AD  - University of California, Davis.
FAU - Alain, C
AU  - Alain C
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PT  - Research Support, U.S. Gov't, Non-P.H.S.
PT  - Research Support, U.S. Gov't, P.H.S.
PL  - United States
TA  - Percept Psychophys
JT  - Perception & psychophysics
JID - 0200445
MH  - Acoustic Stimulation
MH  - Adolescent
MH  - Adult
MH  - *Auditory Perception
MH  - Auditory Threshold
MH  - Dichotic Listening Tests
MH  - *Evoked Potentials, Auditory, Brain Stem
MH  - Female
MH  - Humans
MH  - *Loudness Perception
MH  - Male
MH  - Noise
MH  - Perceptual Masking
MH  - Reaction Time
EDAT- 1993/04/01 00:00
MHDA- 1993/04/01 00:01
CRDT- 1993/04/01 00:00
PHST- 1993/04/01 00:00 [pubmed]
PHST- 1993/04/01 00:01 [medline]
PHST- 1993/04/01 00:00 [entrez]
AID - 10.3758/bf03206782 [doi]
PST - ppublish
SO  - Percept Psychophys. 1993 Apr;53(4):391-402. doi: 10.3758/bf03206782.