Abstract
Using metacontrast masking to suppress the conscious registration of a prime stimulus, Breitmeyer, Ro, and Singhal (2004) showed that color priming produced by a masked prime disk occurs at unconscious stimulusdependent rather than at percept-dependent levels of visual processing. The current set of experiments compares this type of unconscious stimulus-dependent priming to conscious priming produced by a prime that, in two separate ways, is rendered visible and thus activates percept-dependent visual processes. The results indicate that while the masked prime again acts at a stimulus-dependent level of processing, the unmasked, visible primes additionally act at a later percept-dependent level of processing.
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Ansorge, U., Klotz, W., &Neumann, O. (1998). Manual and verbal responses to completely masked (unreportable) stimuli: Exploring some conditions for the metacontrast dissociation.Perception,27, 1177–1189.
Breitmeyer, B. G. (1984).Visual masking: An integrative approach. New York: Oxford University Press.
Breitmeyer, B. G., Kafaligönül, H., Öĝmen, H., Mardon, L., Todd, S., &Ziegler, R. (2006). Meta- and paracontrast reveal differences between contour- and brightness-processing mechanisms.Vision Research,46, 2645–2658.
Breitmeyer, B. G., Öĝmen, H., &Chen, J. (2004). Unconscious priming by color and form: Different processes and levels.Consciousness & Cognition,13, 138–157.
Breitmeyer, B. G., Ro, T., &Singhal, N. S. (2004). Unconscious color priming occurs at stimulus- not percept-dependent levels of visual processing.Psychological Science,15, 198–202.
Crick, F., &Koch, C. (1998). Consciousness and neuroscience.Cerebral Cortex,8, 97–107.
de Gelder, B., de Haan, E. H. F., &Heywood, C. (Eds.). (2001).Out of mind. New York: Oxford University Press.
Dolan, R. J. (2002). Emotion, cognition, and behavior.Science,298, 1191–1194.
Esteves, F., Parra, C., Dimberg, V., &Ohman, A. (1994). Nonconscious associative learning: Pavlovian conditioning of skin conductance responses to masked fear-relevant facial stimuli.Psychophysiology,31, 375–385.
Kihlstrom, J. F. (1996). Perception without awareness of what is perceived, learning without awareness of what is learned. In V. Velman (Ed.),The science of consciousness (pp. 23–46). London: Routledge.
Klotz, W., &Wolff, P. (1995). The effect of a masked stimulus on the response to the masking stimulus.Psychological Research,58, 92–101.
Kreiman, G., Fried, I., &Koch, C. (2002). Single-neuron correlates of subjective vision in the human medial temporal lobe.Proceedings of the National Academy of Sciences,99, 8378–8383.
Leopold, D. A., &Logothetis, N. K. (1996). Activity changes in early visual cortex reflect monkey’s percepts during binocular rivalry.Nature,379, 549–553.
Metzinger, T. (2000).Neural correlates of consciousness. Cambridge, MA: MIT Press.
Milner, A. D., &Goodale, M. A. (1995).The visual brain in action. Oxford: Oxford University Press.
Morris, J., &Dolan, R. (2001). The amygdala and unconscious fear processing. In B. de Gelder, E. H. F. de Haan, & C. Heywood (Eds.),Out of mind (pp. 185–204). New York: Oxford University Press.
Neumann, O., &Klotz, W. (1994). Motor responses to nonreportable, masked stimuli: Where is the limit of direct parameter specification? In C. Umiltà & M. Moscovitch (Eds.),Attention & performance XV (pp. 123–150). Cambridge, MA: MIT Press.
Schmidt, T. (2000). Visual perception without awareness: Priming responses by color. In T. Metzinger (Ed.),Neural correlates of consciousness (pp. 157–169). Cambridge, MA: MIT Press.
Schmidt, T. (2002). The finger in flight: Real-time motor control by visually masked color stimuli.Psychological Science,13, 112–118.
Vorberg, D., Mattler, U., Heinecke, A., Schmidt, T., &Schwarzbach, J. (2003). Different time course for visual perception and action priming.Proceedings of the National Academy of Sciences,100, 6275–6280.
Weiskrantz, L. (1997).Consciousness lost and found: A neuropsychological exploration. New York: Oxford University Press.
Zeki, S. (1997). The color and motion systems as guides to conscious visual perception. In K. S. Rockland, J. H. Kaas, & A. Peters (Eds.),Cerebral cortex: Vol. 12. Extrastriate cortex of primates (pp. 777–809). New York: Plenum.
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B.G.B. is associated with the Department of Psychology and the Center for Neuro-Engineering and Cognitive Science at the University of Houston. T.R. is associated with the Department of Psychology at Rice University. H.O. is associated with the Department of Electrical and Computer Engineering and the Center for Neuro-Engineering and Cognitive Science at the University of Houston. S.T. is associated with the Department of Philosophy at the University of Houston. This work was supported by NSF Grant BCS-0114533 and NIH Grant R01-MH49892.
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Breitmeyer, B.G., Ro, T., Öĝmen, H. et al. Unconscious, stimulus-dependent priming and conscious, percept-dependent priming with chromatic stimuli. Perception & Psychophysics 69, 550–557 (2007). https://doi.org/10.3758/BF03193912
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DOI: https://doi.org/10.3758/BF03193912