Interactive 3D EEG Cap Viewer

1.2.2

Browser-based review and comparison of EEG electrode coordinates

Preparing 3D viewer…
Viewing from Front (nose) + patient's right side · viewed from above Directions use the patient's anatomy; front means the nose.
No electrode selected Click an electrode to display its coordinate in the correct source or MNI/fsaverage frame.
Original / CSV coordinate x — · y — · z — Coordinate frame not selected.
MNI/fsaverage coordinate x — · y — · z — Coordinate method will be shown here.

Selected electrode information

None
Click an electrode in the 3D viewer. Hovering also previews its information.

Cap comparison

0Matched labels
—Mean source distance
—Maximum source distance
Load a comparison CSV to calculate electrode differences.

EEG coordinates and CSV contents are processed locally in your browser and are not uploaded or stored by this website.

Template scalp: MNE-Python fsaverage head surface. Native MNI/fsaverage coordinates are used directly; supplied or estimated template coordinates for other source frames are identified separately and are not subject-specific MRI coregistration. See third-party notices.

When enabled, the site counter records page openings using an app identifier and a random request ID. Files and their contents are not sent.

Optional distance analysis

Pairwise electrode distances in MNI space

Each cell shows the straight-line Euclidean distance in millimeters between two visible electrodes. The matrix follows the electrodes currently shown for the selected cap; use Electrode visibility to choose the subset. These are not distances measured along the scalp surface.

The matrix will be prepared when this window opens.