title: Matching boxes: familiar size influences action programming.
abstract: The perception/action model is the dominant account of the primary division of labour in the human visual pathway. Integral to this model is the idea that goal-directed actions are guided spatially by bottom-up vision, independent of perceptual recognition and top-down object knowledge. We question this idea by showing that the expected size of familiar objects (matchboxes) affects the amplitude of reaches made to grasp them, and the pre-shaping of the hand, even when binocular cues are available. This suggests that perceptual recognition routinely influences action programming.
authors.affiliation: Human Cognitive Neuroscience, University of Edinburgh, 7 George Square, Edinburgh EH8 9JZ, UK. r.d.mcintosh@ed.ac.uk
authors.forename: Robert D
authors.initials: RD
authors.lastname: McIntosh
authors.forename: Gavin
authors.initials: G
authors.lastname: Lashley
mesh_terms: D000328:Adult; D003463:Cues; D003867:Depth Perception / Q000502:physiology; D005260:Female; D005556:Form Perception / Q000502:physiology*; D006225:Hand / Q000502:physiology; D018737:Hand Strength / Q000502:physiology*; D006801:Humans; D008297:Male; D008568:Memory / Q000502:physiology; D008875:Middle Aged; D008959:Models, Neurological; D009068:Movement / Q000502:physiology; D011597:Psychomotor Performance / Q000502:physiology; D012858:Size Perception / Q000502:physiology*; D015348:Vision, Binocular / Q000502:physiology; D015349:Vision, Monocular / Q000502:physiology; D014796:Visual Perception / Q000502:physiology*