Dissociations between perception and action depend on the relative potency of egocentric and allocentric information

Cañal‐Bruland, Rouwen; Voorwald, Frank; Wielaard, Kirsten; Kamp, John van der

doi:10.1037/e636952013-044

Cited by 1 publication

(1 citation statement)

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“…A size illusion should only influence a movement if size is used to plan or guide the movement. Indeed, it has been reported for saccades (de Grave et al, 2006), stylus pointing movements (de Grave et al, 2004), and beanbag throwing (Canal-Bruland et al, 2013) that movements between the vertices of the illusion are affected, but movements that start outside the illusion are not. For the pointing movements, the authors varied whether the hand and target were visible during the movement, and found that the more was visible during movement execution, the more participants relied on egocentric position information rather than allocentric size information (de Grave et al, 2004).…”

Section: Visual Size and Positionmentioning

confidence: 99%

The cost of aiming for the best answers: Inconsistent perception

Smeets

Brenner

2023

Front. Integr. Neurosci.

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The laws of physics and mathematics describe the world we live in as internally consistent. As these rules provide a very effective description, and our interaction with the world is also very effective, it seems self-evident that our perception follows these laws. As a result, when trying to explain imperfections in perception, we tend to impose consistency and introduce concepts such as deformations of visual space. In this review, we provide numerous examples that show that in many situations we perceive related attributes to have inconsistent values. We discuss how our tendency to assume consistency leads to erroneous conclusions on how we process sensory information. We propose that perception is not about creating a consistent internal representation of the outside world, but about answering specific questions about the outside world. As the information used to answer a question is specific for that question, this naturally leads to inconsistencies in perception and to an apparent dissociation between some perceptual judgments and related actions.

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