[ENH] add "visual correction" and "head stabilization" metadata

src/modality-specific-files/task-events.md

@@ -272,7 +272,9 @@ in the accompanying JSON sidecar as follows (based on the example of the previou
         "ScreenDistance": 1.8,
         "ScreenRefreshRate": 60,
         "ScreenResolution": [1920, 1200],
-        "ScreenSize": [0.472, 0.295]
-    }
+        "ScreenSize": [0.472, 0.295],
+        "HeadStabilization": "none"
+    },
+    "VisionCorrection": "lenses"
 }
 ```

src/schema/objects/metadata.yaml

@@ -1328,6 +1328,14 @@ HeadCoilFrequency:
       items:
         type: number
         unit: Hz
+HeadStabilization:
+  name: HeadStabilization
+  display_name: Head stabilization
+  description: |
+    Head restraint method used during the experiment
+    to prevent rotation and/or translation of the head.
+    Example: "chin-rest", "head-rest", "bite-bar", "chin-rest and head-rest", "none"
+  type: string
 HowToAcknowledge:
   name: HowToAcknowledge
   display_name: How To Acknowledge
@@ -3313,6 +3321,7 @@ StimulusPresentation:
     - SoftwareRRID
     - SoftwareVersion
     - Code
+    - HeadStabilization
   properties:
     OperatingSystem:
       $ref: objects.metadata.OperatingSystem
@@ -3545,6 +3554,13 @@ VELChannelCount:
     Number of linear velocity channels.
   type: integer
   minimum: 0
+VisionCorrection:
+  name: VisionCorrection
+  display_name: Vision correction
+  description: |
+    Equipment used to correct participant vision during an experiment.
+    Example: "spectacles", "lenses", "none".
+  type: string
 VolumeTiming:
   name: VolumeTiming
   display_name: Volume Timing

src/schema/rules/sidecars/events.yaml

@@ -11,3 +11,4 @@ StimulusPresentation:
     - suffix == "events"
   fields:
     StimulusPresentation: recommended
+    VisionCorrection: optional