Canu M H, Rougeul A
Institut des Neurosciences, C.N.R.S., Université Pierre-et-Marie-Curie, Paris.
C R Acad Sci III. 1992;315(12):513-20.
In the awake cat, characteristic electrocortical synchronized oscillations (beta rhythms) can develop on the parietal cortex in specific behavioural situations such as during attentive fixation of a target. These activities differ from other synchronized rhythms which accompany slow sleep ("spindles") and are more widespread. It is shown here through single unit recording from the thalamic nucleus reticularis (RET), that the latter structure participates in spindles (as already postulated by other authors), but not in the beta rhythms which seem to depend on a more restricted thalamic focus in the posterior thalamic nucleus. These data thus support the idea that RET plays a role in slow-wave sleep but not in the cognitive operations involved in focussing attention.
在清醒的猫中，特定行为情境下，如在专注注视目标时，顶叶皮质会出现特征性的脑电皮质同步振荡（β节律）。这些活动不同于伴随慢波睡眠的其他同步节律（“纺锤波”），且分布更广泛。通过对丘脑网状核（RET）进行单单位记录表明，后者参与纺锤波活动（其他作者已提出此观点），但不参与β节律，β节律似乎依赖于丘脑后核中更局限的丘脑焦点。因此，这些数据支持了RET在慢波睡眠中起作用，但在注意力集中所涉及的认知操作中不起作用这一观点。
