[BEP032] Add extracellular electrophysiology dataset for bep032

microephys_ecephys_bep032/README.md

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+# Massively parallel multi-electrode recordings of macaque motor cortex during an instructed delayed reach-to-grasp task
+
+## Summary
+We provide two electrophysiological datasets recorded via a 10-by-10 multi-electrode array chronically implanted in the motor cortex of two macaque monkeys during an instructed delayed reach-to-grasp task ([Brochier et al., 2018](http://doi.org/10.1038/sdata.2018.55)). The datasets contain the continuous measure of extracellular potentials at each electrode sampled at 30 kHz, the local field potentials sampled at 1 kHz and the timing of the online and offline extracted spike times. It also includes the timing of several task-related and behavioral events recorded along with the electrophysiological data. Finally, the datasets provide a complete set of metadata structured in a standardized format. These metadata allow easy access to detailed information about the datasets such as the settings of the recording hardware, the array specifications, the location of the implant in the motor cortex, information about the monkeys, or the offline spike sorting.
+The two datasets can be exploited to address crucial issues in neurophysiology such as: What are the principles of neural interactions in a local cortical network and how are these interactions modulated during a well-described behavioral task?  How different neuronal signals such as single-unit activity, multi-unit activity or LFPs relate to each other? Which spike sorting methods provide the best estimate of single unit activity?  

microephys_ecephys_bep032/dataset_description.json

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+{
+  "Name": "multielectrode_grasp",
+  "BIDSVersion": "1.10.0",
+  "License": "CC-BY-4.0",
+  "DatasetType": "raw",
+  "Authors": [
+    "Thomas Brochier",
+    "Lyuba Zehl",
+    "Yaoyao Hao",
+    "Margaux Duret",
+    "Julia Sprenger",
+    "Michael Denker",
+    "Sonja Grün",
+    "Alexa Riehle"
+  ],
+  "Acknowledgements": "We thank Emiliano Torre and Vahid Rostami for detecting and handling the hyper-synchronous event artifacts, and Florent Jaillet for developing the Event-Detection Toolbox in Matlab. Special thanks to Moshe Abeles who was a tough teacher for Sonja Grün and taught her the knowledge required for projects like this.",
+  "HowToAcknowledge": "Brochier T, Zehl L, Hao Y, Duret M, Sprenger J, Denker M, Grün S, Riehle A (2017) Massively parallel multi-electrode recordings of macaque motor cortex during an instructed delayed reach-to-grasp task. G-Node. https://doi.org/10.12751/g-node.f83565",
+  "Funding": [
+    "Helmholtz Portfolio “Supercomputing and Modeling for the Human Brain” (SMHB)",
+    "EU Grants 604102 and 720270 (Human Brain Project, HBP)",
+    "Priority Program SPP 1665 of the DFG (GR 1753/4-2 and DE 2175/2-1)",
+    "Collaborative Research Agreement RIKEN-CNRS",
+    "ANR GRASP",
+    "CNRS (PEPS, Neuro_IC2010)",
+    "DAAD",
+    "LIA Vision for Action"
+  ],
+  "ReferencesAndLinks": [
+    "https://doi.org/10.1038/sdata.2018.55"
+  ]
+}

microephys_ecephys_bep032/participants.json

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+{
+  "participant_id": {
+    "Description": "Short identifier for monkey (e.g., used in file names)"
+  },
+  "species": {
+    "Description": "binomial species name (genus, species with genus)"
+  },
+  "sex": {
+    "Description": "Sex of the animal (male/female)"
+  },
+  "birthdate": {
+    "Description": "Date of birth"
+  },
+  "handedness": {
+    "Description": "Trained hand (left and/or right)"
+  },
+  "surgerydate": {
+    "Description": "Date of the surgery"
+  },
+  "disabilities": {
+    "Description": "Comment on existing disabilities"
+  },
+  "character": {
+    "Description": "Comment on the general character/personality"
+  },
+  "given_name": {
+    "Description": "Given Name"
+  }
+}

microephys_ecephys_bep032/participants.tsv

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+participant_id	species	sex	birthdate	handedness	surgerydate	disabilities	character	given_name
+sub-i	macaca mulatta	male	2008-05-17T00:00:00	left	2014-05-22T00:00:00	n/a	calm, but overall not really motivated. Less attentive.	monkey_N
+sub-l	macaca mulatta	female	2004-03-19T00:00:00	left	2010-09-15T00:00:00	Middle phalanx of right thumb is missing.	Eager to work, quick and efficient but very nervous. Does not like to be touched (for instance for RF testing).	monkey_L

microephys_ecephys_bep032/sub-i/ses-140703/ecephys/sub-i_ses-140703_task-r2g_run-001_channels.json

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+{
+  "channel_id": {
+    "description": "Identifier for the channel. Corresponds to the channel number in the source data file."
+  },
+  "contact_id": {
+    "description": "Identifier for the contact. 'n/a' indicates not applicable or not specified."
+  },
+  "sampling_frequency": {
+    "description": "Sampling frequency of the channel in Hz."
+  },
+  "units": {
+    "description": "Units of the recorded signal.",
+    "levels": {
+      "uV": "Microvolts"
+    }
+  },
+  "channel_name": {
+    "description": "Descriptive name of the channel."
+  },
+  "file_origin": {
+    "description": "Path to the source data file from which this channel's data originates."
+  },
+  "connector_id": {
+    "description": "Identifier for the connector used for this channel."
+  },
+  "connector_pin_id": {
+    "description": "Identifier for the pin on the connector used for this channel."
+  },
+  "nev_dig_factor": {
+    "description": "Digital conversion factor for Neuralynx (NEV) data."
+  },
+  "nb_sorted_units": {
+    "description": "Number of sorted units for this channel. 0 indicates no sorted units."
+  },
+  "nsx": {
+    "description": "Neuralynx NSx file version or type. E.g., 2 for NS2, 5 for NS5."
+  },
+  "hi_pass_freq": {
+    "description": "High-pass filter frequency in Hz. 'n/a' indicates no high-pass filter applied or not specified."
+  },
+  "lo_pass_freq": {
+    "description": "Low-pass filter frequency in Hz. 'n/a' indicates no low-pass filter applied or not specified."
+  },
+  "hi_pass_order": {
+    "description": "Order of the high-pass filter. 'n/a' indicates no high-pass filter applied or not specified."
+  },
+  "lo_pass_order": {
+    "description": "Order of the low-pass filter. 'n/a' indicates no low-pass filter applied or not specified."
+  },
+  "filter_type": {
+    "description": "Type of filter applied. 'n/a' indicates no filter applied or not specified.",
+    "levels": {
+      "n/a": "No filter applied or not specified.",
+      "butterworth": "Butterworth filter"
+    }
+  },
+  "electrode_reject_HFC": {
+    "description": "Boolean indicating if high-frequency common mode rejection was applied to the electrode.",
+    "levels": {
+      "TRUE": "High-frequency common mode rejection was applied.",
+      "FALSE": "High-frequency common mode rejection was not applied.",
+      "n/a": "Not applicable or not specified."
+    }
+  },
+  "electrode_reject_LFC": {
+    "description": "Boolean indicating if low-frequency common mode rejection was applied to the electrode.",
+    "levels": {
+      "TRUE": "Low-frequency common mode rejection was applied.",
+      "FALSE": "Low-frequency common mode rejection was not applied.",
+      "n/a": "Not applicable or not specified."
+    }
+  },
+  "electrode_reject_IFC": {
+    "description": "Boolean indicating if intermediate-frequency common mode rejection was applied to the electrode.",
+    "levels": {
+      "TRUE": "Intermediate-frequency common mode rejection was applied.",
+      "FALSE": "Intermediate-frequency common mode rejection was not applied.",
+      "n/a": "Not applicable or not specified."
+    }
+  },
+  "connector_aligned_ids": {
+    "description": "Identifier for aligned connectors. 'n/a' indicates not applicable or not specified."
+  },
+  "coordinates_x": {
+    "description": "X-coordinate of the channel/electrode position. 'n/a' indicates not applicable or not specified."
+  },
+  "coordinates_y": {
+    "description": "Y-coordinate of the channel/electrode position. 'n/a' indicates not applicable or not specified."
+  },
+  "channel_type": {
+    "description": "Type of channel.",
+    "levels": {
+      "BEH": "Behavioral channel",
+      "EXT": "External channel"
+    }
+  }
+}