Dataset of the study "Propagating population activity patterns during spontaneous slow waves in the thalamus of rodents"
Dataset of the study "Propagating population activity patterns during spontaneous slow waves in the thalamus of rodents". The dataset contains raw high-density electrophysiological recordings obtained from the thalamus of anesthetized and freely moving rodents. Further details on the dataset (dataset and file structure, retrieving data from the files, etc.) are available below (see Notes). Abstract of the study: Slow waves (SWs) represent the most prominent electrophysiological events in the thalamocortical system under anesthesia and during deep sleep. Recent studies have revealed that SWs have complex spatiotemporal dynamics and propagate across neocortical regions. However, it is still unclear whether neuronal activity in the thalamus exhibits similar propagation properties during SWs. Here, we report propagating population activity in the thalamus of ketamine/xylazine-anesthetized rats and mice visualized by high-density silicon probe recordings. In both rodent species, propagation of spontaneous thalamic activity during up-states was most frequently observed in dorsal thalamic nuclei such as the higher order posterior (Po), lateral posterior (LP) or laterodorsal (LD) nuclei. The preferred direction of thalamic activity spreading was along the dorsoventral axis, with over half of the up-states exhibiting a gradual propagation in the ventral-to-dorsal direction. Furthermore, simultaneous neocortical and thalamic recordings demonstrated that there is a weak but noticeable interrelation between propagation patterns observed during cortical up-states and those displayed by thalamic population activity. In addition, using chronically implanted silicon probes, we detected propagating activity patterns in the thalamus of naturally sleeping rats during slow-wave sleep. However, in comparison to propagating up-states observed under anesthesia, these propagating patterns were characterized by a reduced rate of occurrence and a faster propagation speed. Our findings suggest that the propagation of spontaneous population activity is an intrinsic property of the thalamocortical network during synchronized brain states such as deep sleep or anesthesia. Additionally, our data implies that the neocortex may have partial control over the formation of propagation patterns within the dorsal thalamus.
Horváth C, Ulbert I, Fiáht R. "Propagating population activity patterns during spontaneous slow waves in the thalamus of rodents" (2024) NEUROIMAGE 285: 120484. doi: 10.1016/j.neuroimage.2023.120484
Pharmaceutical Research and Development Laboratory
Hungarian National Research, Development and Innovation Office
Eötvös Loránd Research Network/Hungarian Research Network