Bressers W M, Kruk M R, Van Erp A M, Willekens-Bramer D C, Haccou P, Meelis E
Theoretical Biological Section, Institute of Evolutionary and Ecological Sciences, Leiden, The Netherlands.
Behav Neurosci. 1995 Oct;109(5):955-64. doi: 10.1037//0735-7044.109.5.955.
Specific brain manipulations, such as stimulation of the paraventricular nucleus of the hypothalamus (PVH) or injections of neuropeptides, increase self-grooming in the rat. Such manipulations also affect the different movements that constitute grooming. Using models to assess the time structure of these movements, the authors demonstrate that the rules that control the time structure within grooming are different from the ones that control its initiation. This study also showed that grooming is self-facilitating and that different brain manipulations in the same hypothalamic area induce structurally different kinds of grooming. The authors suggest that this part of the hypothalamus is not only involved in setting priorities to grooming, relative to other behaviors, but is also involved in the timing of different grooming components. These findings suggest that different neural mechanisms may be involved in the initiation and internal time structure of grooming.
特定的脑部操作，如下丘脑室旁核（PVH）的刺激或神经肽的注射，会增加大鼠的自我梳理行为。此类操作还会影响构成梳理行为的不同动作。作者利用模型评估这些动作的时间结构，证明控制梳理行为中时间结构的规则与控制其起始的规则不同。这项研究还表明，梳理行为具有自我促进作用，并且在同一下丘脑区域进行的不同脑部操作会诱发结构上不同类型的梳理行为。作者认为，下丘脑的这一部分不仅参与相对于其他行为为梳理行为设定优先级，还参与不同梳理成分的时间安排。这些发现表明，不同的神经机制可能参与了梳理行为的起始和内部时间结构。
