# mne.forward.compute_orient_prior¶

mne.forward.compute_orient_prior(forward, loose='auto', verbose=None)[source]

Compute orientation prior.

Parameters
forwardinstance of Forward

Forward operator.

loosefloat | ‘auto’ | dict

Value that weights the source variances of the dipole components that are parallel (tangential) to the cortical surface. Can be:

• float between 0 and 1 (inclusive)

If 0, then the solution is computed with fixed orientation. If 1, it corresponds to free orientations.

• 'auto' (default)

Uses 0.2 for surface source spaces (unless fixed is True) and 1.0 for other source spaces (volume or mixed).

• dict

Mapping from the key for a given source space type (surface, volume, discrete) to the loose value. Useful mostly for mixed source spaces.

verbose

If not None, override default verbose level (see mne.verbose() and Logging documentation for more).

Returns
orient_priorndarray, shape (n_sources,)

Orientation priors.