Pupillary Response as an Indicator of Fatigue Associated with Two Visual Display Devices for Directory Assistance Operation
Part of the Symposion der Deutschen Ophthalmologischen Gesellschaft book series (OPH.GES.)
A review by Bell Laboratories of the Directory Assistance Operation in order to identify labor or time saving methods and devices resulted in an examination of two new systems for storage and retrieval of customer listings:
A computer-based telephone-number bank called Directory Assistance System/Computer (DAS/C), and
A microfilm-based telephone listing called Directory Assistance System/Microfilm (DAS/M).
Unable to display preview. Download preview PDF.
- Lowenstein, O., Loewenfeld, I. E.: Types of central autonomic innervation and fatigue. Archives of Neurology and Psychiatry 66, 581–599 (1951).Google Scholar
- Lowenstein, O., Feinberg, R., Loewenfeld, I. E.: Pupillary movements during acute and chronic fatigue. Investigative Ophthalmology 2, 138–157, (1963).Google Scholar
- Loewenfeld, I. E.: Personal communication, 1971.Google Scholar
© J. F. Bergmann, München 1973