TY - JOUR
T1 - Event-related brain potentials differentiate positive and negative mood adjectives during both supraliminal and subliminal visual processing
AU - Bernat, Edward
AU - Bunce, Scott
AU - Shevrin, Howard
N1 - Funding Information:
The research reported in this study was supported in part by gifts from Robert H. Berry, the Department of Psychiatry, Department of Psychology, and the Rackham Graduate School of the University of Michigan. Portions of these data were presented at the 36th Annual Meeting of the Society for Psychophysiological Research, in Vancouver, Canada, October 1996, the 38th Annual Meeting of the Society for Psychophysiological Research, in Denver Colorado, September 1998, and published in the dissertation of E. B. (University of Michigan). We thank Michael Snodgrass, Philip Wong, William Williams, and William Gehring for assistance in many theoretical and technical aspects of this manuscript. We also thank John Cacioppo and members of his laboratory group for several important suggestions about the analysis and interpretation of these findings, such as the root mean square transform (RMS) used in this study and covarying the baseline in the subliminal duration to validate findings (footnote 4).
PY - 2001
Y1 - 2001
N2 - This experiment provides brain event-related potential (ERP) evidence for differential processing of visually presented pleasant and unpleasant affectively valent words (mood adjectives) for both supraliminal (40 ms) and subliminal (unmasked, 1 ms) stimulus durations. Unpleasant words elicited a more positive amplitude than pleasant words in both durations. ERP components (P1, N1, P2, P3, and a late positive potential; LP) were measured at six electrode sites (F3, F4, P3, P4, CzPz, Oz). ERPs to subliminal stimuli demonstrated differences between pleasant and unpleasant words in the left hemisphere across all measured components. Supraliminal processing showed similar differences in the left hemisphere for early components (P1 and N1), but bilateral differences for late components (P3 and LP). Activity in the P2 time window was associated with the divergence between supraliminal and subliminal affective responses. Implications for the study of affect and consciousness are discussed.
AB - This experiment provides brain event-related potential (ERP) evidence for differential processing of visually presented pleasant and unpleasant affectively valent words (mood adjectives) for both supraliminal (40 ms) and subliminal (unmasked, 1 ms) stimulus durations. Unpleasant words elicited a more positive amplitude than pleasant words in both durations. ERP components (P1, N1, P2, P3, and a late positive potential; LP) were measured at six electrode sites (F3, F4, P3, P4, CzPz, Oz). ERPs to subliminal stimuli demonstrated differences between pleasant and unpleasant words in the left hemisphere across all measured components. Supraliminal processing showed similar differences in the left hemisphere for early components (P1 and N1), but bilateral differences for late components (P3 and LP). Activity in the P2 time window was associated with the divergence between supraliminal and subliminal affective responses. Implications for the study of affect and consciousness are discussed.
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U2 - 10.1016/S0167-8760(01)00133-7
DO - 10.1016/S0167-8760(01)00133-7
M3 - Article
C2 - 11451477
AN - SCOPUS:0034933588
SN - 0167-8760
VL - 42
SP - 11
EP - 34
JO - International Journal of Psychophysiology
JF - International Journal of Psychophysiology
IS - 1
ER -