PMID- 17452044
OWN - NLM
STAT- MEDLINE
DCOM- 20070724
LR  - 20220129
IS  - 0028-3932 (Print)
IS  - 0028-3932 (Linking)
VI  - 45
IP  - 10
DP  - 2007 Jun 11
TI  - Electrophysiological correlates of common-onset visual masking.
PG  - 2285-93
AB  - In common-onset visual masking (COVM) the target and the mask come into view 
      simultaneously. Masking occurs when the mask remains on the screen for longer 
      after deletion of the target. Enns and Di Lollo [Enns, J. T., & Di Lollo, V. 
      (2000). What's new in visual masking? Trends in Cognitive Sciences, 4(9), 
      345-352] have argued that this type of masking can be explained by re-entrant 
      visual processing. In the present studies we used high-density event-related 
      brain potentials (HD-ERP) to obtain neural evidence for re-entrant processing in 
      COVM. In two experiments the participants' task was to indicate the presence or 
      absence of a vertical bar situated at the lower part of a ring highlighted by the 
      mask. The only difference between the experiments was the duration of the target: 
      13 and 40 ms for the first and second experiment respectively. Behavioral results 
      were consistent between experiments: COVM was stronger as a joint function of a 
      large set size and longer trailing mask duration. Electrophysiological data from 
      both studies revealed modulation of a posterior P2 component around 220 ms 
      post-stimulus onset associated with masking. Further, in the critical 
      experimental condition we revealed a significant relation between the amplitude 
      of the P2 and behavioural response accuracy. We hypothesize that this 
      re-activation of early visual areas reflects re-entrant feedback from higher to 
      lower visual areas, providing converging evidence for re-entrance as an 
      explanation for COVM.
FAU - Kotsoni, Eleni
AU  - Kotsoni E
AD  - Centre for Brain and Cognitive Development, School of Psychology, Birkbeck, 
      University of London, Malet Street, London WC1E 7HX, United Kingdom.
FAU - Csibra, Gergely
AU  - Csibra G
FAU - Mareschal, Denis
AU  - Mareschal D
FAU - Johnson, Mark H
AU  - Johnson MH
LA  - eng
GR  - G9715587/MRC_/Medical Research Council/United Kingdom
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20070304
PL  - England
TA  - Neuropsychologia
JT  - Neuropsychologia
JID - 0020713
SB  - IM
MH  - Adult
MH  - Analysis of Variance
MH  - *Brain Mapping
MH  - Electroencephalography/methods
MH  - Evoked Potentials, Visual/*physiology
MH  - Female
MH  - Functional Laterality
MH  - Humans
MH  - Male
MH  - Pattern Recognition, Visual/physiology
MH  - Perceptual Masking/*physiology
MH  - Photic Stimulation/methods
MH  - Reaction Time/*physiology
MH  - Time Factors
EDAT- 2007/04/25 09:00
MHDA- 2007/07/25 09:00
CRDT- 2007/04/25 09:00
PHST- 2005/11/14 00:00 [received]
PHST- 2007/02/16 00:00 [revised]
PHST- 2007/02/18 00:00 [accepted]
PHST- 2007/04/25 09:00 [pubmed]
PHST- 2007/07/25 09:00 [medline]
PHST- 2007/04/25 09:00 [entrez]
AID - S0028-3932(07)00075-9 [pii]
AID - 10.1016/j.neuropsychologia.2007.02.023 [doi]
PST - ppublish
SO  - Neuropsychologia. 2007 Jun 11;45(10):2285-93. doi: 
      10.1016/j.neuropsychologia.2007.02.023. Epub 2007 Mar 4.