Zobaer M S, Lotfi N, Domenico C M, Hoffman C, Perotti L, Ji D, Dabaghian Y
Department of Neurology, The University of Texas Health Science Center at Houston, Houston, TX 77030.
Department of Neuroscience, Baylor College of Medicine, Houston, TX 77030.
ArXiv. 2024 Apr 22:arXiv:2404.13851v1.
Recently discovered constituents of the brain waves-the -provide high-resolution representation of the extracellular field dynamics. Here we study the most robust, highest-amplitude oscillons that manifest in actively behaving rats and generally correspond to the traditional -waves. We show that the resemblances between -oscillons and the conventional -waves apply to the ballpark characteristics-mean frequencies, amplitudes, and bandwidths. In addition, both hippocampal and cortical oscillons exhibit a number of intricate, behavior-attuned, transient properties that suggest a new vantage point for understanding the -rhythms' structure, origins and functions. We demonstrate that oscillons are frequency-modulated waves, with speed-controlled parameters, embedded into a noise background. We also use a basic model of neuronal synchronization to contextualize and to interpret the observed phenomena. In particular, we argue that the synchronicity level in physiological networks is fairly weak and modulated by the animal's locomotion.
最近发现的脑电波成分——振荡子，可提供细胞外场动力学的高分辨率表示。在此，我们研究在行为活跃的大鼠中表现出的最稳健、振幅最高的振荡子，它们通常对应于传统的θ波。我们表明，θ振荡子与传统θ波之间的相似性适用于大致特征——平均频率、振幅和带宽。此外，海马体和皮质振荡子都表现出许多复杂的、与行为相协调的瞬态特性，这为理解θ节律的结构、起源和功能提供了一个新的视角。我们证明振荡子是频率调制波，具有速度控制参数，嵌入到噪声背景中。我们还使用神经元同步的基本模型来将观察到的现象置于情境中并进行解释。特别是，我们认为生理网络中的同步水平相当弱，并受动物运动的调节。
