Live spike sorting for multichannel and high-channel recordings

针对多通道和高通道录音的实时尖峰排序

• 批准号: 10759767
• 负责人: Achim Klug
• 金额: $ 43.85万
• 依托单位: POPNEURON LLC
• 依托单位国家: 美国
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-09-22 至 2025-08-31
• 项目状态: 未结题
• 来源: https://reporter.nih.gov/project-details/10759767
• 关键词: Action Potentials; Algorithms; Animal Experiments; Area; Benchmarking; Brain; Cells; Complement; Computational Technique; Computers; Data; Data Set; Devices; Electrodes; Equipment; Experimental Designs; Feedback; Goals; Graph; Libraries; Logic; Marketing; Measures; Memory; Neurons; Outcome; Pattern; Positioning Attribute; Process; Pythons; Quality Control; Research Personnel; Running; Slave; Sorting; Speed; Stream; System; Technology; Time; Willow; Work; complex data; data reduction; data standards; data streams; design; experimental study; extracellular; high end computer; in vivo; innovation; laboratory equipment; mathematical methods; neural; neurophysiology; novel; prototype; time use; virtual

Project Summary: The goal of this project is to create two prototypes of a novel live spike sorting system which can be used by investigators to spike sort streams of neural data recorded by multi-channel, high channel and ultra-high channel probes. In most in-vivo extracellular recording conditions, an electrode can pick up neural spikes from several nearby neurons resulting in so-called “multi-unit” activity in the recording trace. Spike sorting algorithms are then used to separate this multi-unit activity into several sets of “single-unit” activities, each of which represents the action potential firing pattern of a single neuron. This sorting process is typically a computationally intensive process and is growing into a critical technology gap with the advent of multi and high channel count hardware. Live spike sorting of a complete set of multichannel data has been challenging if not impossible. On the other hand, there is a demand for live spike sorting during an experiment, especially by those investigators who record from functionally heterogenous brain areas such as, for example, all cortical regions. If an investigator had the ability to review live single cell data, he/she could determine the quality of the data and adjust the electrode position or decide on next experimental steps based on the incoming results. We recently developed the GEMsort algorithm, which, compared to existing spike sorting algorithms, was designed to sort neural spikes from multichannel probes with immediate sorting outcomes. These algorithms provide powerful, accurate yet computationally inexpensive spike sorting due to a different mathematical approach. As a result, these algorithms can spike sort complete streams of complex data, including data recorded with high channel and ultra-high channel electrodes virtually in real time. In this proposal, we will develop two tabletop-sized systems based on Field-Programmable Gate Array (FPGA) technology for laboratory use. These systems will be based on the GEMsort algorithm and add live spike sorting capabilities to an investigator's existing recording setup.

项目概要： 该项目的目标是创建两个新颖的实时穗分拣系统原型，可供以下人员使用： 研究人员对多通道、高通道和超高通道记录的神经数据流进行尖峰排序 在大多数体内细胞外记录条件下，电极可以拾取神经尖峰。 来自几个附近的神经元，导致记录轨迹中的所谓“多单元”活动。 然后使用算法将这种多单元活动分成几组“单单元”活动，每个活动 其中代表单个神经元的动作电位放电模式。这个排序过程通常是一个。 计算密集型过程，并且随着多用途和多用途技术的出现，正在成为一个关键的技术差距 对一整套多通道数据进行实时尖峰排序一直是一项挑战。 另一方面，如果不是不可能的话，在实验过程中需要进行实时尖峰排序， 特别是那些从功能异质的大脑区域进行记录的研究人员，例如 例如，如果研究人员有能力查看活的单细胞数据，他/她就可以。 确定数据的质量并调整电极位置或决定下一步的实验步骤 基于传入的结果。 我们最近开发了 GEMsort 算法，与现有的尖峰排序算法相比， 旨在对来自多通道探针的神经尖峰进行排序，并立即得到排序结果。 由于不同的算法，算法提供了强大、准确且计算成本低廉的尖峰排序 因此，这些算法可以对复杂数据的完整流进行尖峰排序， 包括用高通道和超高通道电极几乎实时记录的数据。 根据提案，我们将开发两种基于现场可编程门阵列（FPGA）的桌面大小的系统 这些系统将基于 GEMsort 算法并添加实时尖峰。 对调查员现有记录设置进行排序的功能。