Adaptation of within-object saccades can be induced by changing stimulus size
Adaptation of within-object saccades can be induced by changing stimulus size
复制标题
通过改变刺激大小可以诱导物体内扫视的适应
DOI：
10.1007/s00221-010-2282-7
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发表时间：
2010
影响因子：
2
通讯作者：
K. Doré
中科院分区：
文献类型：
--
作者：
Louisa Lavergne;D. Vergilino;T. Collins;K. Doré
跳眼自适应维持了跳眼的准确性，并通过跳眼内目标位移过程进行了研究：在跳眼执行过程中向后（或向前）移动目标逐渐降低（或增加）后续的跳眼振幅。传统上，适应性研究是通过瞄准扫视来进行的，这种扫视会把眼睛带到一个新的物体上。物内扫视将眼睛从物体的一个位置转移到同一物体的另一个位置，并且已经被证明可以抵抗眼内目标位移过程。对象内扫视的幅度取决于对象的大小而不是位置，因此我们假设对象内扫视可能会适应对象大小的视内变化。在不同的会话中，我们在对象内跃进执行期间增加或减少对象大小。结果显示振幅延长或缩短。此外，目标内视跳适应似乎与目标视跳适应具有一些共同的特征。
Saccadic adaptation maintains saccade accuracy and has been studied with the intrasaccadic target displacement procedure: displacing a target backwards (or forwards) during saccade execution gradually decreases (or increases) subsequent saccade amplitude. Adaptation has traditionally been studied with targeting saccades which bring the eyes onto a new object. Within-object saccades take the eye from one position in an object to another position in the same object and have been shown to resist the intrasaccadic target displacement procedure. The amplitude of within-object saccades depends on object size rather than position, and we therefore hypothesized that within-object saccades might adapt in response to an intrasaccadic change in object size. In separate sessions, we increased or decreased object size during within-object saccade execution. Results showed amplitude lengthening or shortening, respectively. Furthermore, within-object saccade adaptation seems to share several characteristics with targeting-saccade adaptation.