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How are saccades generated? Response
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DOI：10.1017/S0140525X99552151.png)
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摘要
En 中文
Our target article discussed how emerging knowledge of the physiological processes involved in the control of saccadic eve movements provided the basis for a functional framework in which to understand the programming of such movements. The commentators raised many interesting issues in their varied responses that ranged from detailed discussion of the physiological substrate through issues of saccade control in reading. New evidence at the physiological level demonstrates that some elaborations are needed to the framework we proposed. Most clearly, the spatial selection process operates in a manner different from our suggestion of an increase in activity in the salience map. Some commentators make the interesting and welcome proposal that the functional processes we outline may in fact be implemented with an even more unified physiological substrate (continuity between collicular fixation and build-up cells) than we envisaged. Extensions to the framework are discussed involving the planning of sequential saccades, saccades made in crossmodal situations, the influences of learning and memory, and binocular saccades. We consider carefully the commentaries proposing explicit attentional and/or executive processes in the programming of saccades. We integrate the comments of researchers investigating saccade control in neurological and neuropsychiatric patients and finally discuss whether the framework can account for saccades made in the course of reading.
Keyword:
EYE-MOVEMENTS
WARNING SIGNALS
VISUAL-SEARCH
WORKING-MEMORY
STIMULUS ONSET
ATTENTION
FIXATION
NEGLECT
LATENCY
SYSTEM
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