Michael F. Land and Benjamin W. Tatler
- Published in print:
- 2009
- Published Online:
- March 2012
- ISBN:
- 9780198570943
- eISBN:
- 9780191693878
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780198570943.003.0005
- Subject:
- Psychology, Cognitive Psychology
This chapter addresses ‘domestic’ activities, in particular food preparation. These typically consist of a series of different actions carried out one after the other. Of particular interest are the ...
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This chapter addresses ‘domestic’ activities, in particular food preparation. These typically consist of a series of different actions carried out one after the other. Of particular interest are the relative timings of gaze changes and the actions they enable, and the functions of individual fixations, in terms of the kinds of information they provide. It specifically explores the way in which vision is used to make such activities possible. The focus is placed on what information the eyes supply to the hands, when they provide it, and how they acquire it. Typically gaze leads action by up to a second, and when a body movement is needed this precedes the gaze change by a similar interval. The functions of individual fixations are often clear and are associated to the specific task demands. Furthermore, the precision with which gaze is targeted depends on the requirements of the action.Less
This chapter addresses ‘domestic’ activities, in particular food preparation. These typically consist of a series of different actions carried out one after the other. Of particular interest are the relative timings of gaze changes and the actions they enable, and the functions of individual fixations, in terms of the kinds of information they provide. It specifically explores the way in which vision is used to make such activities possible. The focus is placed on what information the eyes supply to the hands, when they provide it, and how they acquire it. Typically gaze leads action by up to a second, and when a body movement is needed this precedes the gaze change by a similar interval. The functions of individual fixations are often clear and are associated to the specific task demands. Furthermore, the precision with which gaze is targeted depends on the requirements of the action.
Reza Shadmehr and Sandro Mussa-Ivaldi
- Published in print:
- 2012
- Published Online:
- August 2013
- ISBN:
- 9780262016964
- eISBN:
- 9780262301282
- Item type:
- chapter
- Publisher:
- The MIT Press
- DOI:
- 10.7551/mitpress/9780262016964.003.0013
- Subject:
- Neuroscience, Research and Theory
This chapter explains feedback-dependent motor control. It presents examples that support the idea that the motor commands that move the body rely on internal predictions regarding the state of the ...
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This chapter explains feedback-dependent motor control. It presents examples that support the idea that the motor commands that move the body rely on internal predictions regarding the state of the body/environment, and sensory observations. It shows that during a movement, the motor commands depend on the state of the body part that is being controlled, as well as the overall goal of the task. This chapter suggests that the motor commands to control eye and head movements during head-free gaze changes respond to sensory feedback, and the conditions are simulated in which the head is perturbed, demonstrating how it affects the ongoing saccade of the eye.Less
This chapter explains feedback-dependent motor control. It presents examples that support the idea that the motor commands that move the body rely on internal predictions regarding the state of the body/environment, and sensory observations. It shows that during a movement, the motor commands depend on the state of the body part that is being controlled, as well as the overall goal of the task. This chapter suggests that the motor commands to control eye and head movements during head-free gaze changes respond to sensory feedback, and the conditions are simulated in which the head is perturbed, demonstrating how it affects the ongoing saccade of the eye.
