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Biomedical subjects

W L Martin

Publications and source records attributed to W L Martin.

6 recordsLinked to original sources
PubMed1992

Human stereopsis.

This paper reviews much of the basic literature on stereopsis for the purpose of providing information about the ability of humans to utilize stereoscopic information under operational conditions. This review is organized around five functional topics that may be important for the design of many stereoscopic display systems: geometry of stereoscopic depth perception, visual persistence, perceptual interaction among stereoscopic stimuli, neurophysiology of stereopsis, and theoretical considerations. The paper concludes with the presentation of several basic ideas related to the design of stereoscopic displays.

Animals↗
PubMed1978

Performance on a reciprocal tapping task with variations in intertapping interval.

Fitts' law was investigated in a study of the effect of the index of difficulty (ID) and intertapping interval upon reaction time (RT) and movement time (MT) for a reciprocal tapping task. ID showed its well-established relationship with MT as described by Fitts' law: MT = aID + b. Improvement in the linearity of this relationship was, however, demonstrated by expressing MT in logarithmic units. While ID had an unsubstantial (though significant) effect on RT, increases in intertapping interval from zero to any level of discrete tapping led to significant increases in RT of about 135 msec. The results are interpreted as lending support to Fitts' thesis that RT and MT reflect independent phases of information processing.

Humans↗
PubMed1977

Normal pressure hydrocephalus: a case presentation.

There are presently no successful medical treatments available for most of the chronic dementias. For this reason it is most important to diagnose potentially reversible syndromes such as Normal Pressure Hydrocephalus and to determine if that patient is a candidate for neurosurgical treatment. A typical clinical case exemplifying the most common features of this syndrome is presented. This is followed by a discussion of the physiology, etiology, signs and symptoms, methods of diagnosis, and treatment of this illness. Material for this discussion was obtained from personal clinical experience and a review of the medical literature.

Aged↗