Prevailing views on how we time the interception of a moving object assume that the visual inputs are informationally sufficient to estimate the time-to-contact from the object's kinematics. However, there are limitations in the visual system that raise questions about the general validity of these theories. Most notably, vision is poorly sensitive to arbitrary accelerations. How then does the brain deal with the motion of objects accelerated by Earth's gravity? Here we review evidence in favor of the view that the brain makes the best estimate about target motion based on visually measured kinematics and an a priori guess about the causes of motion. According to this theory, a predictive model is used to extrapolate time-to-contact from the expected kinetics in the Earth's gravitational field. © 2005 IOP Publishing Ltd.

Zago, M., Lacquaniti, F. (2005). Visual perception and interception of falling objects: A review of evidence for an internal model of gravity. JOURNAL OF NEURAL ENGINEERING, 2(3), 198-208 [10.1088/1741-2560/2/3/S04].

Visual perception and interception of falling objects: A review of evidence for an internal model of gravity

Zago M.;LACQUANITI, FRANCESCO
2005-01-01

Abstract

Prevailing views on how we time the interception of a moving object assume that the visual inputs are informationally sufficient to estimate the time-to-contact from the object's kinematics. However, there are limitations in the visual system that raise questions about the general validity of these theories. Most notably, vision is poorly sensitive to arbitrary accelerations. How then does the brain deal with the motion of objects accelerated by Earth's gravity? Here we review evidence in favor of the view that the brain makes the best estimate about target motion based on visually measured kinematics and an a priori guess about the causes of motion. According to this theory, a predictive model is used to extrapolate time-to-contact from the expected kinetics in the Earth's gravitational field. © 2005 IOP Publishing Ltd.
2005
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore BIO/09 - FISIOLOGIA
English
Brain; Extrapolation; Gravitation; Kinematics; Mathematical models; Visual communication; Arbitrary accelerations; Earth's gravitational field; Time-to-contact; Visual systems; Sensory perception; gravity; kinematics; movement perception; orienting response; prediction; priority journal; review; theoretical model; visual field; visual orientation; Adaptation, Physiological; Arm; Brain; Clinical Trials; Evidence-Based Medicine; Gravitation; Humans; Models, Neurological; Motion Perception; Motor Skills; Movement; Proprioception; Reflex, Vestibulo-Ocular
Zago, M., Lacquaniti, F. (2005). Visual perception and interception of falling objects: A review of evidence for an internal model of gravity. JOURNAL OF NEURAL ENGINEERING, 2(3), 198-208 [10.1088/1741-2560/2/3/S04].
Zago, M; Lacquaniti, F
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/33705
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