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  1. Thomas P. Reber & Katharina Henke (2012). Integrating Unseen Events Over Time. Consciousness and Cognition 21 (2):953-960.
    Events often share elements that guide us to integrate knowledge from these events. Integration allows us to make inferences that affect reactions to new events. Integrating events and making inferences are thought to depend on consciousness. We show that even unconsciously experienced events, that share elements, are integrated and influence reactions to new events. An unconscious event consisted of the subliminal presentation of two unrelated words. Half of subliminal word pairs shared one word . Overlapping word pairs were presented between (...)
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  2. Simone B. Duss, Sereina Oggier, Thomas P. Reber & Katharina Henke (2011). Formation of Semantic Associations Between Subliminally Presented Face-Word Pairs. Consciousness and Cognition 20 (3):928-935.
    Recent evidence suggests that consciousness of encoding is not necessary for the rapid formation of new semantic associations. We investigated whether unconsciously formed associations are as semantically precise as would be expected for associations formed with consciousness of encoding during episodic memory formation. Pairs of faces and written occupations were presented subliminally for unconscious associative encoding. Five minutes later, the same faces were presented suprathreshold for the cued unconscious retrieval of face-occupation associations. Retrieval instructions required participants to classify the presented (...)
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  3. Katharina Henke, Valerie Treyer, Eva T. Nagy, Stefan Kneifel, Max Düsteler, Roger M. Nitsch & Alfred Buck (2003). Active Hippocampus During Nonconscious Memories. Consciousness and Cognition 12 (1):31-48.
    The hippocampal formation is known for its importance in conscious, declarative memory. Here, we report neuroimaging evidence in humans for an additional role of the hippocampal formation in nonconscious memory. We maskedly presented combinations of faces and written professions such that subjects were not aware of them. Nevertheless, the masked presentations activated many of the brain regions that unmasked presentations of these stimuli did. To induce a nonconscious retrieval of the faces and face-associated occupational information, subjects were instructed to view (...)
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  4. Katharina Henke, Theodor Landis & Hans J. Markowitsch (1993). Subliminal Perception of Pictures in the Right Hemisphere. Consciousness and Cognition 2 (3):225-236.
    We addressed the questions whether stimuli presented below the threshold of verbal awareness are nevertheless perceived and whether there are perceptual differences between the two cerebral hemispheres. Pictures of line drawn objects and animals were subliminally presented to each visual half-field for subsequent identification in a form as fragmented as possible. The performance of 40 healthy subjects was compared to that of 63 controls. Whereas identification performance after blank presentation in the experimental group did not differ from that of controls, (...)
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