Discriminative whisking in the head-fixed rat: optoelectronic monitoring during tactile detection and discrimination tasks.
Discriminative whisking in the head-fixed rat: optoelectronic monitoring during tactile detection and discrimination tasks.
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固定头部的老鼠的辨别性搅拌：触觉检测和辨别任务期间的光电监控。
DOI：
10.1080/01421590120072204
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
Zeigler,HP
中科院分区：
文献类型：
--
作者：
Harvey,MA;Bermejo,R;Zeigler,HP
我们比较了在获得触觉检测和物体辨别的条件下，(A)排除头部运动和(B)接触触觉辨别仅限于大的、可移动的触觉(宏观触觉)的条件下的搅拌运动模式。我们使用光电仪器以高时空分辨率跟踪单个胡须的运动，并采用测试范式，使我们能够将“指示器”反应(杠杆按压)的表现与大鼠的“观察”反应(辨别性甩动)分开。我们分析了辨别成绩与甩动运动模式的关系，以阐明指标反应受到大鼠甩动行为所获得信息的刺激控制的过程。任务习得过程中的快速反应模式因任务需求不同而不同。检测任务的获得与只调制一个搅拌运动参数-发出的搅拌总数相关，并且在没有区分的试验中可以看到更多的搅拌。区分大小和质地不同的球体和立方体与搅拌持续时间和延长幅度的减少以及转向更高的搅拌频率相关。我们的发现证实了之前的报道，即触觉辨别的习得涉及动物对搅拌的数量和类型的调节。与之前的一份报告(Brechtet al.，1997)相比，他们指出，大鼠可以完成触觉物体检测和辨别任务(A)仅使用大的、可移动的肌间触觉(宏观触觉)和(B)不进行头部运动。我们得出结论：大触觉的功能贡献将因任务的性质和测试条件的不同而不同。
We compared whisking movement patterns during acquisition of tactile detection and object discrimination under conditions in which (a) head movements are excluded and (b) exposure to tactile discriminanda is confined to the large, moveable vibrissae (macrovibrissae). We used optoelectronic instrumentation to track the movements of an individual whisker with high spatio-temporal resolution and a testing paradigm, which allowed us to dissociate performance on an “indicator” response (lever pressing) from the rat's “observing” responses (discriminative whisking). We analyzed the relation between discrimination performance and whisking movement patterns in order to clarify the process by which the indicator response comes under the stimulus control of information acquired by the rat's whisking behavior. Whisking patterns over the course of task acquisition differed with task demands. Acquisition of the Detection task was correlated with modulation of only one whisking movement parameter - total number of whisks emitted, and more whisking was seen on trials in which the discriminandum was absent. Discrimination between a sphere and cube differing in size and texture was correlated with a reduction in whisk duration and protraction amplitude and with a shift towards higher whisking frequencies. Our findings confirm previous reports that acquisition of tactile discriminations involves modulation by the animal ofboththe amount and the type of whisking. In contrast with a previous report (Brechtet al., 1997), they indicate that rats can solve tactile object detection and discrimination tasks (a) using only the large, motile mystacial vibrissae (macrovibrissae) and (b) without engaging in head movements.We conclude that the functional contribution of themacrovibrissae will vary with the nature of the task and the conditions of testing.
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影响因子：
2.4
作者：
J. Dörfl
通讯作者：
J. Dörfl
影响因子：
1.8
作者：
P. B. Rosenberger;J. Ernest
通讯作者：
J. Ernest
影响因子：
2.7
作者：
Brecht, M;Preilowski, B;Merzenich, MM
通讯作者：
Merzenich, MM
DOI：
--
发表时间：
1961
期刊：
影响因子：
--
作者：
H. Philip Zeigler;L. B. Wyckoff
通讯作者：
L. B. Wyckoff
触须对大鼠（褐家鼠）深度知觉的作用。
影响因子：
2.5
作者：
H. Schiffman;R. Lore;J. Passafiume;R. Neeb
通讯作者：
R. Neeb