Characteristics of simian adaptation fields produced by behavioral changes in saccade size and direction.
Characteristics of simian adaptation fields produced by behavioral changes in saccade size and direction.
复制标题
眼跳大小和方向的行为变化产生的猿适应场的特征。
DOI：
10.1152/jn.1999.81.6.2798
复制
发表时间：
1999
期刊：
影响因子：
--
通讯作者：
Fuchs,AF
中科院分区：
文献类型：
--
作者：
Noto,CT;Watanabe,S;Fuchs,AF
眼跳大小和方向的行为变化所产生的适应场特征。 扫视眼动的增益可以通过在目标扫视期间向前或向后移动目标而逐渐改变。如果仅对一种尺寸的目标的扫视的增益进行适配，则增益改变仅推广或转移到具有相似向量的扫视。在这项研究中，我们检查了这种扫视大小适应的空间范围，即，增益自适应字段。我们还试图通过在目标扫视过程中正交移动目标来适应扫视方向，以记录方向或交叉轴适应场的范围。在水平扫视到15°目标步数的自适应增益降低后，>82%的增益降低转移到水平扫视到25°目标步数，但仅约30%转移到扫视到5°步数。对于具有15°水平分量和10°向上或向下垂直分量的斜扫视到目标步骤的水平分量，转移分别为51%和60%。因此，增益降低适应场在水平维度上是相当不对称的，但在垂直维度上是对称的。虽然增益增加自适应产生的增益变化（对于30%的前向自适应目标步长增加13%）比增益减小自适应（对于30%的后向自适应目标步长减少20%）小，但是增益转移的空间范围是非常相似的。特别地，增益增加适应场在水平方向上显示出不对称性（58%转移到25°扫视，但仅32%转移到5°扫视），并且在垂直方向上显示出对称性（50%转移到向上10°的水平分量，40%转移到向下10°的倾斜扫视）。当在对水平10°目标步的扫视过程中发生5°垂直目标运动时，在对水平目标的扫视中逐渐出现垂直分量。在10°眼跳中产生的垂直分量中，超过88%的横轴变化转移到20°眼跳，但只有12%转移到4°眼跳。这种转移类似于斜向扫视的垂直分量到目标步骤，具有10°向上（46%）或10°向下（46%）的垂直分量。因此，增益和交叉轴自适应场具有相似的空间分布。这些轮廓类似于额眼区和上级丘神经元的运动场。讨论中考虑了这些结构如何参与适应进程。
Characteristics of adaptation fields produced by behavioral changes in saccade size and direction. The gain of saccadic eye movements can be altered gradually by moving targets either forward or backward during targeting saccades. If the gain of saccades to targets of only one size is adapted, the gain change generalizes or transfers only to saccades with similar vectors. In this study, we examined the spatial extent of such saccadic size adaptation, i.e., the gain adaptation field. We also attempted to adapt saccade direction by moving the target orthogonally during the targeting saccade to document the extent of a direction or cross-axis adaptation field. After adaptive gain decreases of horizontal saccades to 15° target steps, >82% of the gain reduction transferred to saccades to 25° horizontal target steps but only ∼30% transferred to saccades to 5° steps. For the horizontal component of oblique saccades to target steps with 15° horizontal components and 10° upward or downward vertical components, the transfer was similar at 51 and 60%, respectively. Thus the gain decrease adaptation field was quite asymmetric in the horizontal dimension but symmetric in the vertical dimension. Although gain increase adaptation produced a smaller gain change (13% increase for a 30% forward adapting target step) than did gain decrease adaptation (20% decrease for a 30% backward adapting target step), the spatial extent of gain transfer was quite similar. In particular, the gain increase adaptation field displayed asymmetry in the horizontal dimension (58% transfer to 25° saccades but only 32% transfer to 5° saccades) and symmetry in the vertical direction (50% transfer to the horizontal component of 10° upward and 40% transfer to 10° downward oblique saccades). When a 5° vertical target movement was made to occur during a saccade to a horizontal 10° target step, a vertical component gradually appeared in saccades to horizontal targets. More than 88% of the cross-axis change in the vertical component produced in 10° saccades transferred to 20° saccades but only 12% transferred to 4° saccades. The transfer was similar to the vertical component of oblique saccades to target steps with either 10° upward (46%) or 10° downward (46%) vertical components. Therefore both gain and cross-axis adaptation fields have similar spatial profiles. These profiles resemble those of movement fields of neurons in the frontal eye fields and superior colliculus. How those structures might participate in the adaptation process is considered in thediscussion.
登录
查看更多内容
猴上丘电诱导眼跳的短期适应。
影响因子：
2.5
作者：
Bart Melis;J. V. Gisbergen
通讯作者：
J. V. Gisbergen
对移动目标的参数调整与扫视交替到固定参考点
DOI：
10.3758/bf03328664
发表时间：
1972
期刊：
Psychonomic Science
影响因子：
--
作者：
G. Weisfeld
通讯作者：
G. Weisfeld
DOI：
10.1037//0096-1523.15.2.249
发表时间：
1989
期刊：
Journal of experimental psychology. Human perception and performance
影响因子：
--
作者：
John L. Semmlow;G. Gauthier;J. Vercher
通讯作者：
J. Vercher
视觉皮质和额叶皮质。
DOI：
--
发表时间：
1989
期刊：
Reviews of oculomotor research
影响因子：
--
作者：
Michael E. Goldberg;M. Segraves
通讯作者：
M. Segraves
影响因子：
2.5
作者：
FUCHS, AF;ROBINSON, FR;STRAUBE, A
通讯作者：
STRAUBE, A