What is the test for review of a decision by the California Appeal Board?

Review by this court of an appeals board decision is limited to a decision that is in excess of the appeals board's jurisdiction, that is procured by fraud or is unreasonable, or is not supported by substantial evidence. ( 5952.) An unreasonable decision under section 5952 is one that is not supported by substantial evidence or the use of unreasonable or arbitrary procedures. (2 Hanna, supra , 34.18[1], p. 34-32.) When determining whether the appeals board's conclusion was supported by substantial evidence, the evidence should be considered in light of the entire record. ( 5952, subd. (d) ; LeVesque v. Workers' Comp. Appeals Bd. (1970) 1 Cal.3d 627, 637, 83 Cal.Rptr. 208, 463 P.2d 432.)