Biomedical subjects

D J Ingle

Publications and source records attributed to D J Ingle.

At least 19 recordsLinked to original sources

PubMed1985

The goldfish as a retinex animal.

In an experiment designed to test color constancy in a situation comparable to that used in E. H. Land's experiments with human observers, goldfish were trained to approach a particular color within a richly colored but variable "Mondrian" background. They retained the ability to identify colors accurately even when the spectral composition of the illuminant was radically altered in generalization tests. Since the behavior of fish resembles that of human beings in these tests, Land's retinex theory seems to apply to a relatively primitive vertebrate as well as to humans.

Animals↗

PubMed1981

New methods for analysis of vision in the gerbil.

The visual behavior of gerbils has been studied by adapting natural behaviors such as food pursuit, aperture detection, barrier negotiation and ladder climbing. Methods are described for measuring detection and discrimination thresholds using visual orienting tasks. Furthermore, studies of size-distance constancy, anticipation of a moving target's trajectory, and optimal planning of barrier detours show the usefulness of film records for quantitative analysis of complex perceptual abilities. Finally, preliminary studies of gerbils following ablation of primary visual cortex indicate that some visuomotor abilities are cortically dependent.

Animals↗

PubMed1980

Some effects of pretectum lesions on the frogs' detection of stationary objects.

Frogs with bilateral aspiration lesions of the caudal thalamus were unable to avoid collision with a vertically striped barrier that partly surrounded the animal. This striking deficit co-existed with normal visual guidance of feeding and avoidance of threat. In addition, all lesioned animals were unable to turn towards an aperture within black or white enclosures in order to escape noxious stimulation. Some residual detection of stationary edges remains, however, since most lesioned animals were able to avoid a small barrier placed before them. It is concluded that pretectal visual neurons play a key role in the detection of stationary objects in contrast to the motion detection functions of the frogs optic tectum.

Animals↗

PubMed1979

Anton J. Carlson: a biographical sketch.

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Chicago↗

PubMed1978

Medical research and human freedom.

This discussion of the nature of human freedom supports the common-sense view of conscious self-determination. The capacity for self-determination is expanded by knowledge and should be optimal among medical scientists, but many such have been passive when faced by increased restrictions on inquiry. Restrictions should be guided by medical ethics defined in major part by physicians and medical scientists. They are urged to protect their freedoms more actively.

Decision Making↗

PubMed1977

The effects of amphetamine on maze learning by goldfish.

Goldfish performed a simple left-right discrimination in a Y-maze under the influence of amphetamine. The subjects showed facilitation of learning at a low dose (1.25 mg/l) but not at 2.0 mg/l.

Animals↗

PubMed1974