Eye position effects in saccadic adaptation in macaque monkeys.
Eye position effects in saccadic adaptation in macaque monkeys.
复制标题
眼睛位置对猕猴扫视适应的影响。
作者：
Svenja Wulff;A. Bosco;K. Havermann;G. Placenti;P. Fattori;M. Lappe
人类和猴子的扫视幅度可以使用麦克劳克林范式中的扫视内目标步骤来适应。通常认为，作为纯视网膜参考系的结果，在调整某一幅度和方向的扫视之后，相同幅度和方向的扫视都被调整到相同的程度，而与初始眼睛位置无关。然而，最近在人类身上的研究表明，初始眼位对不同起始点的眼跳的适应性转移有影响，从而对纯视网膜编码提出了质疑。由于人类和猴子在适应方面存在一些物种差异，因此我们测试了猴子的眼位依赖性。两个训练有素的食蟹猴从五个同样水平分布的起始位置进行反应性快速扫视。所有扫视都是以相同的视网膜运动矢量进行的。在每个会话中，在一个特定的初始眼睛位置，适应位置，开始的扫视，适应较短的幅度，并在其他四个位置开始的扫视的适应进行了测量。结果表明，从其他位置开始的眼跳比从适应位置开始的眼跳适应性差。随着测试眼跳起始位置和适应位置之间距离的增加，测试眼跳的幅度变化呈高斯分布减小。我们的结论是，猕猴的增益降低扫视适应是特定的初始眼位置，在该适应已被诱导。
The saccadic amplitude of humans and monkeys can be adapted using intrasaccadic target steps in the McLaughlin paradigm. It is generally believed that, as a result of a purely retinal reference frame, after adaptation of a saccade of a certain amplitude and direction, saccades of the same amplitude and direction are all adapted to the same extent, independently from the initial eye position. However, recent studies in humans have put the pure retinal coding in doubt by revealing that the initial eye position has an effect on the transfer of adaptation to saccades of different starting points. Since humans and monkeys show some species differences in adaptation, we tested the eye position dependence in monkeys. Two trained Macaca fascicularis performed reactive rightward saccades from five equally horizontally distributed starting positions. All saccades were made to targets with the same retinotopic motor vector. In each session, the saccades that started at one particular initial eye position, the adaptation position, were adapted to shorter amplitude, and the adaptation of the saccades starting at the other four positions was measured. The results show that saccades that started at the other positions were less adapted than saccades that started at the adaptation position. With increasing distance between the starting position of the test saccade and the adaptation position, the amplitude change of the test saccades decreased with a Gaussian profile. We conclude that gain-decreasing saccadic adaptation in macaques is specific to the initial eye position at which the adaptation has been induced.
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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
发表时间：
1999
期刊：
Journal of neurophysiology.
影响因子：
--
作者：
Noto,CT;Watanabe,S;Fuchs,AF
通讯作者：
Fuchs,AF
影响因子：
2.5
作者：
FUCHS, AF;ROBINSON, FR;STRAUBE, A
通讯作者：
STRAUBE, A
驱动猕猴扫视增益适应的误差信号的时间特征。
DOI：
10.1152/jn.2000.84.1.88
发表时间：
2000
期刊：
Journal of neurophysiology.
影响因子：
--
作者：
Shafer,JL;Noto,CT;Fuchs,AF
通讯作者：
Fuchs,AF
影响因子：
2.5
作者：
OPTICAN, LM;ROBINSON, DA
通讯作者：
ROBINSON, DA