def METHOD_NAME(confounds_raw):
    """Find non steady state regressors.
    Parameters
    ----------
    confounds_raw : pandas.DataFrame
        DataFrame of confounds.
    Returns
    -------
    pandas.DataFrame
        DataFrame of non steady state regressors generated by fMRIPrep.
        If none were found, return an empty DataFrame.
    """
    nss_outliers = _find_confounds(confounds_raw, ["non_steady_state"])
    if nss_outliers:
        return confounds_raw[nss_outliers]
    else:
        return pd.DataFrame()