Are somatosensory saccades voluntary or reflexive?
Are somatosensory saccades voluntary or reflexive?
复制标题
体感扫视是自愿的还是反射性的？
作者：
R. Amlȏt;R. Walker
本研究探讨是否自愿（内源性）和反射（刺激引起的）眼跳的视觉模态之间的区别可以适用于躯体感觉模态。假定的反射性亲扫视和自愿的反扫视视觉和体感刺激的行为特征进行了研究。视觉和体感亲眼跳有更短的潜伏期比自愿反眼跳的方向相反的周边刺激。此外，在大约11-13%的反扫视试验中，对视觉和体感刺激进行了错误的亲扫视。所观察到的差异，在亲和反眼跳潜伏期和亲眼跳错误的存在下，在反眼跳任务表明，体感刺激可以引起一种形式的反射眼跳可比亲眼跳的视觉模态。有人建议，外周体感刺激可以引起一种形式的反射性扫视，体感扫视不完全依赖于更高层次的内源性控制过程，其产生。然而，潜在的潜伏期分布和视觉和体感刺激的眼跳的峰值速度配置文件的比较表明，这种区别可能是不太清楚地定义为体感模态和模态的具体差异（如神经传导率的差异）在潜在的眼结构中涉及的眼跳目标选择也需要考虑。有人进一步建议，一个更广泛的概念化扫视和扫视编程超越简单的自愿和反射二分法，考虑到控制过程中涉及的扫视生成两种模式，可能需要。
The present study examines whether the distinction between voluntary (endogenous) and reflexive (stimulus-elicited) saccades made in the visual modality can be applied to the somatosensory modality. The behavioural characteristics of putative reflexive pro-saccades and voluntary anti-saccades made to visual and somatosensory stimuli were examined. Both visual and somatosensory pro-saccades had much shorter latency than voluntary anti-saccades made in the direction opposite to a peripheral stimulus. Furthermore, erroneous pro-saccades were made towards both visual and somatosensory stimuli on approximately 11–13% of anti-saccade trials. The observed difference in pro- and anti-saccade latency and the presence of pro-saccade errors in the anti-saccade task indicates that a somatosensory stimulus can elicit a form of reflexive saccade comparable to pro-saccades made in the visual modality. It is proposed that a peripheral somatosensory stimulus can elicit a form of reflexive saccade and that somatosensory saccades do not depend exclusively on higher level endogenous control processes for their generation. However, a comparison of the underlying latency distributions and of peak-velocity profiles of saccades made to visual and somatosensory stimuli showed that this distinction may be less clearly defined for the somatosensory modality and that modality-specific differences (such as differences in neural conduction rates) in the underlying oculomotor structures involved in saccade target selection also need to be considered. It is further suggested that a broader conceptualisation of saccades and saccade programming beyond the simple voluntary and reflexive dichotomy, that takes into account the control processes involved in saccade generation for both modalities, may be required.
DOI：
--
发表时间：
1989
期刊：
Reviews of oculomotor research
影响因子：
--
作者：
D. Sparks;R. Hartwich-Young
通讯作者：
D. Sparks;R. Hartwich-Young
DOI：
10.1037/1196-1961.48.2.284
发表时间：
1994-06-01
影响因子：
1.3
作者：
RAFAL, R;EGLY, R;RHODES, D
通讯作者：
RHODES, D