Une nouvelle publication Alexandre VEYRIE, doctorant en co-direction ONERA/Equipe Dynamique Neuronale & Audition dans Plos One
"Investigating the influence of masker and target properties on the dynamics of perceptual awareness under informational masking"
Abstract:
Informational masking has been investigated using the detection of an auditory target embedded in a random multi-tone masker. The build-up of the target percept is influenced by the masker and target properties. Most studies dealing with discrimination performance neglect the dynamics of perceptual awareness. This study aims at investigating the dynam- ics of perceptual awareness using multi-level survival models in an informational masking paradigm by manipulating masker uncertainty, masker-target similarity and target repetition rate. Consistent with previous studies, it shows that high target repetition rates, low masker- target similarity and low masker uncertainty facilitate target detection. In the context of evi- dence accumulation models, these results can be interpreted by changes in the accumula- tion parameters. The probabilistic description of perceptual awareness provides a benchmark for the choice of target and masker parameters in order to examine the underly- ing cognitive and neural dynamics of perceptual awareness.
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