[Critical flicker fusion frequency in man during exposure to noise].

The critical frequency of flicker fusion in the central and four peripheral points of the retina was investigated in 12 test subjects during and after one hour exposure to wide-band noise of 95 dBA. The subjects showed two types of response: three displayed an increase and nine a decrease of the flicker fusion critical frequency as compared to the control level. The changes showed individual variations. No correlation was found between the sign of changes in the parameter and its pretest level or the retinal site of registration.