[Clinical tachistoscopy: physical-technical requirements and diagnostic use in brain damaged patients]

The importance of physical marginal conditions in tachistoscopic measurements with statements about the arrangement of the content of the picture, light-technical parameters, optimum viewing distance and time of exposure is emphasized. Historic and topical technological solutions in tachistoscopy are discussed. A projection tachistoscope of own design is presented. The fields of tachistoscopic applications as well as results obtained in psycho-diagnostic examinations of patients with cerebral lesions are reported. For a picture series offering the possibility of differentiation age-dependent standard values are given. At advanced age and in cerebro-organic processes significant losses of performances are found.