Asymmetric influences of temporally vs. nasally presented masked visual information: evidence for collicular contributions to nonconscious priming effects |
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| Authors: | Ansorge Ulrich |
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| Institution: | Psychology, Bielefeld University, P.O. Box 100131, D-33501, Bielefeld, Germany |
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| Abstract: | It was tested whether the retino-collicular projection allows for the processing of nonconsciously registered visual information in healthy individuals. Masked primes were presented to different visual hemifields. Because the retino-collicular projection is stronger for temporal than for nasal hemifields, priming should be stronger by temporal than by nasal primes. This pattern was tested in two experiments (Experiments 1 and 3). Further, with less peripheral primes, only available to weaker parts of the retino-collicular projection, hemifield asymmetries of priming vanished (Experiment 2). In conclusion, the study offers first evidence for collicular contributions to nonconscious priming effects by visual information in healthy individuals. |
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| Keywords: | Direct parameter specification Metacontrast Nonconscious processing Priming Sensorimotor processing Superior colliculus Visuo-spatial attention |
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