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Biomedical subjects

S Coren

Publications and source records attributed to S Coren.

At least 73 records · Page 4Linked to original sources
PubMed1987

A rapid method to assess crystalline lens pigment density in vivo.

A procedure for rapidly estimating lens pigment density, based upon metameric matches on the D & H Color Rule, is described. A computational nomograph to convert settings to lens densities is provided. This procedure was validated in a sample 126 normal observers, and shown to produce data comparable to more complex laboratory testing procedures. The speed and simplicity of this procedure suggest that it may be useful for monitoring changes in lens pigment density in groups exposed to high levels of environmental, laboratory or industrial ultraviolet light.

Aging↗
PubMed1986

Sighting dominance and egocentric localization.

Theories of the perception of visual direction use, either a hypothetical "projection center" midway between the two eyes, or the line of sight of the sighting dominant eye, as a reference point for egocentric localization. Seventy-five observers made judgments of the visual straight ahead. Their judgments varied as a function of both viewing condition and eye dominance. Judgments were biased toward the side of the viewing eye during monocular exposure, while binocular judgments were intermediate in their placement. Both monocular and binocular judgments were shifted in the direction of the sighting dominant eye, suggesting that the reference point for visual localization lies between the midpoint of the interocular axis and the line of sight of the sighting eye.

Depth Perception↗
PubMed1985

Birth stress and self-reported sleep difficulty.

Difficulty in falling asleep and frequency of night wakenings were assessed in 1,272 college-aged individuals for whom birth histories (based on retrospective maternal reports) were available. A history of birth complications was associated with reports of sleep difficulties as an infant. Birth stressors, such as breech birth, prolonged labor, low birth weight, and multiple births, were predictive of disrupted sleep patterns in the young adult.

Adolescent↗
PubMed1984

Writing hand posture and four indexes of lateral preference.

The relationship between writing hand posture and lateral preference for hand, foot, eye, and ear was examined in a sample of 3709 college undergraduates. A markedly different pattern of lateral preferences was observed in left-handed males and females as a function of hand posture. Left-handed male inverters displayed a tendency toward more leftward lateral preferences in all four indexes; while it was found that hand inversion during writing in left-handed females reflected, if anything, a tendency toward more rightward lateral preferences.

Ear↗
PubMed1983

The creation and reversal of the Müller-Lyer illusion through attentional manipulation.

A configuration is presented in which both the overestimated and the underestimated portions of the Müller-Lyer illusion are embedded. In free viewing no distortion of length occurs; however, overestimation or underestimation illusions can be produced by simple manipulation of the attentional set, thus demonstrating one cognitive component in the formation of the Müller-Lyer distortion.

Attention↗
PubMed1982

The relationship between birth stress and writing hand posture.

Variations in handwriting posture (inverted versus noninverted) were measured in 1203 individuals for whom birth histories, based upon retrospective maternal reports, were available. A history of birth complications was associated with an increased incidence of inverted handwriting posture. Effects interacted with sex and hand preference; the largest difference in handwriting posture between the birth-stressed and non-birth-stressed groups occurred in left-handers and in males.

Cesarean Section↗