Implicit processing of tactile information: Evidence from the tactile change detection paradigm

Consciousness and Cognition 20 (3):534-546 (2011)
Abstract
People can maintain accurate representations of visual changes without necessarily being aware of them. Here, we investigate whether a similar phenomenon also exists in touch. In Experiments 1 and 2, participants detected the presence of a change between two consecutively-presented tactile displays. Tactile change blindness was observed, with participants failing to report the presence of tactile change. Critically, however, when participants had to make a forced choice response regarding the number of stimuli presented in the two displays, their performance was significantly better than chance . Experiment 3 demonstrated that tactile change detection does not necessarily involve a shift of spatial attention toward the location of change, regardless of whether the change is explicitly detected. We conclude that tactile change detection likely results from comparing representations of the two displays, rather than by directing spatial attention to the location of the change
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References found in this work BETA
Anna Berti (2002). Unconscious Processing in Neglect. In Hans-Otto Karnath, David Milner & Giuseppe Vallar (eds.), The Cognitive and Neural Bases of Spatial Neglect. Oxford University Press. 313-326.
Jonathan Cohen (2002). The Grand Grand Illusion Illusion. Journal of Consciousness Studies 9 (5-6):141-157.

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