[The informative value of temporal artery sphygmogram for diagnosis visual disorders during +Gz-loads]

In investigation with centrifuge runs at 5 +Gz for 30 s visual disorders of the grey sheet type were provoked in three test-subjects by short-time relaxation of the leg and abdominal muscles. Alterations in amplitude parameters of the temporal artery sphygmogram elicited in 59 centrifuge runs were of the kind characterizing the well-marked visual disorders. Application of the linear discriminant function including three parameters of sphygmogram allowed to identify the visual disorders with a 10.2% error and a confidential probability of more than 0.999. Validity of the procedure of identification of dangerous states of pilot was attested in real flights with the maneuvering loads up to 5.8 g. Data of the investigation give the authors the right to recommend the method of indirect diagnosis of visual disorders as a tool to tackle the applied problems of aviation and space medicine.