Separate EMG dataset for Custom Bipolar placement on Face, one to many example

Author: neuromechanist

emg_CustomBipolarFace/README.md

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+# EMG Custom Bipolar Face Example
+
+This dataset illustrates recording from facial muscles with:
+- One-to-many mapping between sensors and muscles
+- Functional localization for electrode placement
+- Recording from muscles without bony landmarks
+
+## Dataset Structure
+
+The dataset includes a single subject with custom bipolar EMG setup for facial muscles:
+
+```shell
+emg_CustomBipolarFace/
+├── dataset_description.json
+├── participants.json
+├── participants.tsv
+├── README.md
+└── sub-01/
+    └── emg/
+        ├── sub-01_task-talking_channels.tsv
+        ├── sub-01_task-talking_electrodes.json
+        ├── sub-01_task-talking_electrodes.tsv
+        ├── sub-01_task-talking_emg.edf
+        └── sub-01_task-talking_emg.json
+```
+
+## Recording Details
+
+- **Electrode Setup**: Custom bipolar EMG recordings from facial muscles
+- **Task**: Talking task with facial expressions
+- **Challenges**: Documentation of electrode placement on non-bony landmarks
+- **Muscles Recorded**: Multiple facial muscles (zygomaticus, frontalis, orbicularis oris)

emg_CustomBipolarFace/dataset_description.json

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+{
+  "Name": "EMG Custom Bipolar Face Example",
+  "License": "BSD 3-Clause",
+  "Authors": ["BEP042 Team"], 
+  "ReferencesAndLinks": ["https://github.com/bids-standard/bids-specification/issues/1371",
+                          "https://github.com/bids-standard/bids-specification/pull/1998"],
+  "EthicsApprovals": ["Datasets are de-identified hypotheticals and do not require ethics approval."],
+  "BIDSVersion": "1.10.0",
+  "HEDVersion": "8.3.0",
+  "DatasetType": "raw",
+  "Acknowledgements": "We thank the participants and their families for their time and effort. We also thank the NeuroScience Gateway team for providing computational resources.",
+  "GeneratedBy":[ {
+    "Name": "bids-matlab-tools",
+    "Version": "9.1"
+  }]
+} 

emg_CustomBipolarFace/participants.json

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+{
+    "age": {
+        "Description": "Age in years",
+        "Units": "years"
+    },
+    "sex": {
+        "Description": "self-reported sex, one of M, F, or O",
+        "Levels": {
+            "M": "male",
+            "F": "female",
+            "O": "other"
+        }
+    },
+    "group": {
+        "Description": "Experimental group the participant belonged to",
+        "Levels": {
+            "control": "Control group",
+            "experiment": "Experimental group"
+        }
+    }
+} 

emg_CustomBipolarFace/participants.tsv

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+participant_id	age	sex	group
+sub-01	27	F	control 

emg_CustomBipolarFace/sub-01/emg/sub-01_task-talking_channels.tsv

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+name	type	units	reference	target_muscle	interelectrode_distance	signal_electrode
+EMG1	EMG	V	E2	tongue, anterior belly of the digastric	n/a	E1
+EMG2	EMG	V	E4	levator angulis oris, zygomaticus major	20 mm	E3
+EMG3	EMG	V	E6	levator angulis oris, zygomaticus major	n/a	E5
+EMG4	EMG	V	E8	platysma	n/a	E7
+EMG5	EMG	V	E10	orbicularis oris	n/a	E9
+EMG6	EMG	V	E12	tongue	20 mm	E11

emg_CustomBipolarFace/sub-01/emg/sub-01_task-talking_electrodes.json

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+{
+    "Coordsystem": {
+        "EMGCoordinateUnits": "percent",
+        "EMGCoordinateSystemDescription": "X: LHJ → RHJ; Y: Inion → Nasion; Z: MMP → Vertex; Left Helix-Tragus Junction; (LHJ) Right Helix-Tragus Junction(RHJ); Vertex Midpoint between Mastoid processs(MMP)"
+    }
+}

emg_CustomBipolarFace/sub-01/emg/sub-01_task-talking_electrodes.tsv

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+name	x	y	z
+E1	20	80	0
+E2	40	100	50
+E3	10	90	40
+E4	20	90	40
+E5	70	90	40
+E6	0	50	30
+E7	80	90	30
+E8	100	50	30
+E9	50	100	20
+E10	100	50	30
+E11	60	60	-10
+E12	70	60	-10

emg_CustomBipolarFace/sub-01/emg/sub-01_task-talking_emg.edf

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+{
+	"EMGChannelCount":6,
+	"EMGPlacementScheme":"Electrodes placed over articulatory muscles on the lower face.",
+	"EMGReference":"Behind the ear (Mastoid)",
+	"EMGGround":"n/a",
+    "EMGElectrodeCount":13,
+    "ElectrodeMaterial":"Ag/AgCl",
+	"Manufacturer":"Custom",
+	"ManufacturersModelName":"n/a",
+    "AmpifierType":"Wired",
+	"RecordingDuration":1.00,
+	"SamplingFrequency":2000,
+	"TaskDescription":"Subject perofrmed speech tasks.",
+	"TaskName":"talking",
+	"TriggerChannelCount":0
+}