PMID- 8497558
OWN - NLM
STAT- MEDLINE
DCOM- 19930624
LR  - 20190830
IS  - 0048-5772 (Print)
IS  - 0048-5772 (Linking)
VI  - 30
IP  - 3
DP  - 1993 May
TI  - Intermodal selective attention: evidence for processing in tonotopic auditory 
      fields.
PG  - 287-95
AB  - Auditory event-related brain potentials (ERPs) were recorded for 250- and 
      4,000-Hz tone bursts in an intermodal selective attention task. Tonotopic changes 
      were evident in the scalp distribution of the rising phase of the auditory N1 
      (mean peak latency 116 ms); the N1 was more frontally distributed following the 
      4,000-Hz than following the 250-Hz tone bursts, and it included a contralateral 
      P90 component that was absent following 250-Hz tones. ERPs related to intermodal 
      selective attention were isolated as negative and positive auditory difference 
      waves (Ndas and Pdas). Neither the Nda nor the Pda showed changes in distribution 
      with tone frequency, but both showed Ear x Frequency changes in distribution. 
      ERPs for deviant tones included mismatch negativities (MMNs) and, in attend 
      auditory conditions, N2b and P3 components. These components did not change in 
      scalp distribution with tone frequency. One possible explanation is that 
      tonotopic displacements of ERP distributions on the scalp surface depend on 
      angular displacements in generator fields on gyral convexities. The results are 
      consistent with the possibility that auditory processing radiates outward with 
      increasing latency from tonotopic fields on Heschl's gyri to more gyrus-free 
      regions of the planun temporale and anterior superior temporal plane.
FAU - Woods, D L
AU  - Woods DL
AD  - Department of Neurology, University of California-Davis.
FAU - Alho, K
AU  - Alho K
FAU - Algazi, A
AU  - Algazi A
LA  - eng
GR  - FO5 TW04283/TW/FIC NIH HHS/United States
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  - Psychophysiology
JT  - Psychophysiology
JID - 0142657
SB  - IM
MH  - Acoustic Stimulation
MH  - Attention/*physiology
MH  - Brain/physiology
MH  - Brain Mapping
MH  - Electroencephalography
MH  - Evoked Potentials, Auditory/*physiology
MH  - Humans
MH  - Photic Stimulation
MH  - Reaction Time/physiology
MH  - Task Performance and Analysis
EDAT- 1993/05/01 00:00
MHDA- 1993/05/01 00:01
CRDT- 1993/05/01 00:00
PHST- 1993/05/01 00:00 [pubmed]
PHST- 1993/05/01 00:01 [medline]
PHST- 1993/05/01 00:00 [entrez]
AID - 10.1111/j.1469-8986.1993.tb03355.x [doi]
PST - ppublish
SO  - Psychophysiology. 1993 May;30(3):287-95. doi: 10.1111/j.1469-8986.1993.tb03355.x.