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research article

Is lack of attention necessary for task-irrelevant perceptual learning?

Galliussi, Jessica
•
Grzeczkowski, Lukasz  
•
Gerbino, Walter
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November 1, 2018
Vision Research

Perceptual learning can occur for a feature irrelevant to the training task, when it is sub-threshold and outside of the focus of attention (task-irrelevant perceptual learning, TIPL); however, TIPL does not occur when the task-irrelevant feature is supra-threshold. Here, we asked the question whether TIPL occurs when the task-irrelevant feature is sub-threshold but within the focus of spatial attention. We tested participants in three different discrimination tasks performed on a 3-dot stimulus: a horizontal Vernier task and a vertical bisection task (during pre- and post-training sessions), and a luminance task (during training). In Experiment 1 we found that attending to luminance differences within the same stimulus that contains a sub-threshold horizontal offset (an irrelevant feature during training) does not preclude TIPL, as revealed by an improvement in the Vernier task, but not in the bisection task. This conclusion was confirmed in Experiment 2, in which the 3-dot stimulus used during training did not include a horizontal offset.

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Type
research article
DOI
10.1016/j.visres.2017.10.006
Web of Science ID

WOS:000453804700013

Author(s)
Galliussi, Jessica
•
Grzeczkowski, Lukasz  
•
Gerbino, Walter
•
Herzog, Michael H.  
•
Bernardis, Paolo
Date Issued

2018-11-01

Publisher

PERGAMON-ELSEVIER SCIENCE LTD

Published in
Vision Research
Volume

152

Start page

118

End page

125

Subjects

Neurosciences

•

Ophthalmology

•

Psychology

•

Neurosciences & Neurology

•

Ophthalmology

•

Psychology

•

perceptual learning

•

task-irrelevant perceptual learning

•

attention

•

awareness

•

vernier task

•

bisection task

•

stimuli

Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LPSY  
Available on Infoscience
January 3, 2019
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/153327
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