A Study of early Greyout Threshhold as an indicator of Human Tolerance to Positive Radial Acceleration Force

Testing psychomotor performance during sustained acceleration

“…The mean difference in G force between the near and far peripheral light loss was approximately 0.3 Gz, and it was concluded from their data (65) that 800 light loss,provides an earlier warning of the imminent loss of central vision. The authors (65) point out, however, that the slight increase in time to blackout-offered by the use of the 800 peripheral test lights may be of limited usefulness in actual G-stressed conditions.…”

“…Critical fusion, frequency (a) Light-detection Thresholds Zarriello et al (65) studied light-detection thresholds using four peripherally located green test lights, and one centrally located red light. Two of the peripheral test lights were located at 800, and the other two at 230, to the right and left of the subject's visual axis.…”