James H. Fuller
- Published in print:
- 1992
- Published Online:
- March 2012
- ISBN:
- 9780195068207
- eISBN:
- 9780199847198
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780195068207.003.0013
- Subject:
- Neuroscience, Sensory and Motor Systems
In this chapter, a variety of saccadic eye-head movements evoked by visual and auditory stimuli are reviewed. Variation in head movement strategies resulting from methodology as well as the subject's ...
More
In this chapter, a variety of saccadic eye-head movements evoked by visual and auditory stimuli are reviewed. Variation in head movement strategies resulting from methodology as well as the subject's own biases are considered alongside factors already known to affect eye-head movements. Search strategies are compared in different tasks. First, in the relatively simple situation in which the head is immobilized; second, in the more complicated situation when the head is free to move. The variables of movement amplitude and sensory modality are compared at the same time. In the studies of Guitton and Volle as well as Bizzi et al., saccadic latency was majorly affected by the predictability of the fixation-saccade interval and the saccade amplitude and direction.Less
In this chapter, a variety of saccadic eye-head movements evoked by visual and auditory stimuli are reviewed. Variation in head movement strategies resulting from methodology as well as the subject's own biases are considered alongside factors already known to affect eye-head movements. Search strategies are compared in different tasks. First, in the relatively simple situation in which the head is immobilized; second, in the more complicated situation when the head is free to move. The variables of movement amplitude and sensory modality are compared at the same time. In the studies of Guitton and Volle as well as Bizzi et al., saccadic latency was majorly affected by the predictability of the fixation-saccade interval and the saccade amplitude and direction.
Kurt-peter Schaefer and Dietrich Lothar Meyer
- Published in print:
- 1992
- Published Online:
- March 2012
- ISBN:
- 9780195068207
- eISBN:
- 9780199847198
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780195068207.003.0037
- Subject:
- Neuroscience, Sensory and Motor Systems
The aim of this chapter is to focus on the huge extent to which eye-head movements mirror specialized functions of the vestibular system, or circuits derived from this system. Accordingly, the ...
More
The aim of this chapter is to focus on the huge extent to which eye-head movements mirror specialized functions of the vestibular system, or circuits derived from this system. Accordingly, the authors argue that many of the physiologic phenomena described can only be understood if the evolutionary background is appreciated. Apparently, evolution shaped the vestibular systems long before a mobile neck evolved, and the “problems” under consideration at this conference were created by nature. Originally, the vestibular system's main function has been to stabilize the eyes in space during active and passive body movements. Without such a mechanism, visual functions would be significantly impaired.Less
The aim of this chapter is to focus on the huge extent to which eye-head movements mirror specialized functions of the vestibular system, or circuits derived from this system. Accordingly, the authors argue that many of the physiologic phenomena described can only be understood if the evolutionary background is appreciated. Apparently, evolution shaped the vestibular systems long before a mobile neck evolved, and the “problems” under consideration at this conference were created by nature. Originally, the vestibular system's main function has been to stabilize the eyes in space during active and passive body movements. Without such a mechanism, visual functions would be significantly impaired.
