EC2_B8.nwb

The enclosed data is collected using a high-density 256-channel electrocorticography array implanted in a human patient during treatment for epilepsy. The subjects are reading aloud consonant-vowel syllables from a list. The data was collected by Dr. Edward Chang at the University of California, San Francisco, and curated by Ben Dichter.<br>Data is organized by subject ID, and each file is a continuous recording session in Neurodata Without Borders: Neurophysiology (NWB:N) 2.0 format. Voltage traces are included for each of the recorded 256 channels. Microphone signal was recorded at the time but is removed for HIPAA compliance. Detailed hand-marked annotations are provided which mark what syllable was said, and the times of the start, consonant-vowel transition, and end of each syllable. A rest-period time is also included when the subject was silent, which can be used as a baseline. Hand-marked anatomical labels are included for electrodes in the relevant brain regions. All dates have been removed for HIPAA compliance and replaced with Jan 1, 1900.

本附带数据集采用高密度256通道皮层脑电图（electrocorticography, ECoG）阵列采集所得，该阵列植入于一名因癫痫接受治疗的人类患者体内。受试者正朗读预设列表中的辅音-元音音节。本数据集由加州大学旧金山分校的Edward Chang博士采集，并由Ben Dichter完成数据整理。
数据集按受试者ID进行组织，每个文件均为一段连续的录制会话，采用无界神经数据：神经生理学（Neurodata Without Borders: Neurophysiology, NWB:N）2.0格式存储。所有256个记录通道均包含电压迹线数据。采集过程中曾同步记录麦克风信号，但出于《健康保险流通与责任法案》（Health Insurance Portability and Accountability Act, HIPAA）合规要求，该信号已被移除。
数据集附带详细的人工标注信息，标注了所朗读的音节类型，以及每个音节的起始时刻、辅音-元音转换时刻与结束时刻。此外还包含受试者保持静默的静息时段数据，可作为实验基线参考。针对相关脑区内的电极，数据集附带人工标注的解剖学标签。出于HIPAA合规要求，所有原始日期均已移除，替换为1900年1月1日。