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People can maintain accurate representations of visual changes without necessarily being aware of them. Here, we investigate whether a similar phenomenon (implicit change detection) 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 (i.e., implicit change detection was observed). 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.

Original publication

DOI

10.1016/j.concog.2011.02.006

Type

Journal article

Journal

Conscious Cogn

Publication Date

09/2011

Volume

20

Pages

534 - 546

Keywords

Adult, Attention, Awareness, Discrimination (Psychology), Female, Humans, Male, Middle Aged, Pattern Recognition, Physiological, Physical Stimulation, Reaction Time, Touch Perception, Young Adult