LFP data from Steinmetz et al. 2019

<b>Raw LFP data during the recording sessions reported in Steinmetz et al. 2019.</b><br><i>Companion dataset to doi:10.6084/m9.figshare.9598406.</i><br>Each LFP file has 385 channels of int16 data at 2500Hz. They can be loaded directly into software like Neuroscope, and can be read in matlab like:<br>&gt;&gt; fid = fopen('thisfile.bin', 'r');&gt;&gt; dat = fread(fid, [385 Inf], '*int16');&gt;&gt; fclose(fid);<br><br>Note that the file may well be too large to fit into memory so you may not want to read "Inf" samples as in this example.<br>Each file has different start and end times, and there are drifts in the clocks between probes - so the timestamp files, which give the aligned timing information, must be used. These files are located in the companion dataset (with spiking and behavioral data). The aligned timestamps are specified in a particular way: an Nx2 matrix where the first column is sample numbers and the second column is the time in seconds at which those samples occurred. Since LFP was sampled regularly, N=2, just the first and last sample. So, to get the time at which every sample occurred, use this line in matlab:<br>&gt;&gt; tsData = readNPY('...lf.timestamps.npy');&gt;&gt; allTS = interp1(tsData(:,1), tsData(:,2), tsData(1,1):tsData(2,1));<br>That's just linearly interpolating between the times given for the first and last samples.<br>

**Steinmetz等人2019年报道的记录实验中的原始局部场电位（Local Field Potential, LFP）数据**<br>*本数据集为DOI:10.6084/m9.figshare.9598406的配套数据集*<br>每个LFP文件包含385通道的int16格式数据，采样率为2500Hz。该类文件可直接加载至Neuroscope等神经电生理分析软件，也可通过Matlab按如下方式读取：<br>>> fid = fopen('thisfile.bin', 'r');>> dat = fread(fid, [385 Inf], '*int16');>> fclose(fid);<br><br>请注意，此类文件通常体积过大无法完全载入内存，因此请勿如本示例般读取全部「Inf」数量的采样点。<br>每个文件的起始与终止时间均不相同，且不同记录探针间存在时钟漂移，因此需使用提供对齐时序信息的时间戳文件。此类时间戳文件存放于本配套数据集（包含神经元放电与行为学数据）中。<br>对齐后的时间戳采用特定格式存储：为一个N×2的矩阵，其中第一列为采样序号，第二列为对应采样点发生的时刻（单位为秒）。由于LFP为规则采样，因此N=2，仅包含首个与末次采样点的信息。<br>因此，若需获取所有采样点对应的时刻，可在Matlab中执行如下代码：<br>>> tsData = readNPY('...lf.timestamps.npy');>> allTS = interp1(tsData(:,1), tsData(:,2), tsData(1,1):tsData(2,1));<br>该代码通过对首个与末次采样点的时刻进行线性插值，即可得到所有采样点的时刻信息。

搜集汇总

背景与挑战

背景概述

该数据集是Steinmetz等人2019年研究中的原始LFP记录数据，包含385通道、2500Hz采样的神经信号，需要配合时间戳文件使用。数据以二进制格式存储，适用于Neuroscope等神经科学分析软件。