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ERIC Number: EJ781862
Record Type: Journal
Publication Date: 2008-Feb
Pages: 10
Abstractor: Author
Reference Count: 0
ISSN: ISSN-0010-0277
Numeric Comparison in a Visually-Guided Manual Reaching Task
Song, Joo-Hyun; Nakayama, Ken
Cognition, v106 n2 p994-1003 Feb 2008
Nearly all studies on perception and cognition have used discrete responses to infer internal cognitive processes. In the current study, we demonstrate that visually-guided manual reaching can provide new opportunities to access internal processes over time. In each trial, participants were required to compare a single digit Arabic number presented on the center square with the standard, 5. Participants were asked to reach and touch one of three squares on the screen with their index finger while their hand movement trajectories were recorded: the left square for 1-4, the center for 5, and the right for 6-9. Direct evidence for an analogue representation of numbers was found in early as well as in later portions of hand trajectories, showing systematic shifts in position for small differences in numerical magnitude.
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A