Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

Przeglądasz jako GOŚĆ
Tytuł pozycji:

Experience can change distinct size-weight priors engaged in lifting objects and judging their weights.

Tytuł :
Experience can change distinct size-weight priors engaged in lifting objects and judging their weights.
Autorzy :
Flanagan JR; Department of Psychology and Centre for Neuroscience Studies, Queen's University, Kingston, ON K7L 3N6, Canada. />Bittner JP
Johansson RS
Pokaż więcej
Źródło :
Current biology : CB [Curr Biol] 2008 Nov 25; Vol. 18 (22), pp. 1742-7.
Typ publikacji :
Journal Article; Research Support, Non-U.S. Gov't
Język :
English
Imprint Name(s) :
Publication: Cambridge, MA : Cell Press
Original Publication: London, UK : Current Biology Ltd., c1991-
MeSH Terms :
Learning/*physiology
Size Perception/*physiology
Weight Perception/*physiology
Adaptation, Psychological ; Adolescent ; Adult ; Humans
Entry Date(s) :
Date Created: 20081126 Date Completed: 20090127 Latest Revision: 20081127
Update Code :
20201218
DOI :
10.1016/j.cub.2008.09.042
PMID :
19026545
Czasopismo naukowe
The expectation that object weight increases with size guides the control of manipulatory actions [1-6] and also influences weight perception. Thus, the size-weight illusion, whereby people perceive the smaller of two equally weighted objects to be heavier, is thought to arise because weight is judged relative to expected weight that, for a given family of objects, increases with size [2, 7]. Here, we show that the fundamental expectation that weight increases with size can be altered by experience and neither is hard-wired nor becomes crystallized during development. We demonstrate that multiday practice in lifting a set of blocks whose color and texture are the same and whose weights vary inversely with volume gradually attenuates and ultimately inverts the size-weight illusion tested with similar blocks. We also show that in contrast to this gradual change in the size-weight illusion, the sensorimotor system rapidly learns to predict the inverted object weights, as revealed by lift forces. Thus, our results indicate that distinct adaptive size-weight maps, or priors, underlie weight predictions made in lifting objects and in judging their weights. We suggest that size-weight priors that influence weight perception change slowly because they are based on entire families of objects. Size-weight priors supporting action are more flexible, and adapt more rapidly, because they are tuned to specific objects and their current state.
Comment in: Curr Biol. 2009 Jan 13;19(1):R23-5. (PMID: 19138585)

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies