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Biomedical subjects

A Dubois-Poulsen

Publications and source records attributed to A Dubois-Poulsen.

At least 19 recordsLinked to original sources

[Visual defects of aging and their consequences].

Visual impairments have a preeminent place in gerontology because they are a constant feature of the aging process. The impairments are manifested through both normal and pathologic phenomena. Individual, professional and social consequences of these impairments are many: An individual's personal activities are affected, but also his profession, and his participation in the life of the community, his capacity to drive an automobile safely-or merely to get about in his own home.

Aged↗

[Discrimination curve of color hues].

The hue discrimination curve has been studied in 48 cases of acquired dyschromatopsias not as it is the rule in relation with the nosology but in relation with the classifications as they are given by the test of Farnsworth. The results show with evidence different characters according to the type of dyschromatopsia: protan deutan or tritan.

Color Perception Tests↗

[Determination in the spectral curve of relative luminous efficiency (author's transl)].

The determination of the maximum in the spectral curve of relative luminous efficiency can be done with a simple procedure. Two colours having the same ordinate on the curve are alternatively presented at a rate under the critical fusion frequency. They do not flicker if the subject is normal. They flicker on the contray if the maximum is displaced. We developed a simple apparatus which is proposed.

Adult↗

[Hallucinogens].

Explore the source record for details and available documents.

Adolescent↗