Biomedical subjects

U Fidelman

Publications and source records attributed to U Fidelman.

3 recordsLinked to original sources

PubMed1991

Experimental testing of constructivism and related theories.

The purpose of this article is to show that experimental scientific methods can be applied to explain how the analytic mechanism of the left cerebral hemisphere and the synthetic mechanism of the right one create complex cognitive constructions like ontology and mathematics. Nominalism and ordinal mathematical concepts are related to the analytic left hemisphere while Platonism and cardinal mathematical concepts are related to the synthetic right one. Thus persons with a dominant left hemisphere tend to prefer nominalist ontology and have more aptitude for ordinal mathematics than for cardinal mathematics, while persons with a dominant right hemisphere tend to prefer platonist ontology and have more aptitude for cardinal mathematics than for ordinal mathematics. It is further explained how the Kantism temporal mode of perceiving experience can be related to the left hemisphere while the Kantian spatial mode of perceiving experience can be related to the right hemisphere. This relation can be tested experimentally, thus the Kantian source of constructivism, and through it constructivism itself, can be tested experimentally.

Attention↗

PubMed1990

Cognitive and hemispheric inversions when learning nonstandard arithmetic.

Understanding the proofs of compactness theorems regarding the consistency of the existence of infinite or infinitesimal numbers was found to be related to the dominance of the left cerebral hemisphere over the right one. This phenomenon is not weakened when learning, the compactness theorem is followed by learning about internal and external sets, which is also related to such a dominance. However, when the learning of the compactness theorem is followed by learning about monads and galaxies instead of internal and external sets, the understanding of the consistency of the existence of the infinite or infinitesimal numbers was found to be related to the dominance of the right cerebral hemisphere over the left one. A cognitive and neuropsychological model is given to explain these phenomena.

Adult↗

PubMedDate not supplied

A misleading implication of the metabolism scans of the brain.

Metabolism scans of the brain measure the quantity of energy consumed by parts of the brain while performing a cognitive task. This quantity of energy is wrongly considered to represent the amount of data processing by the related parts of the brain. Thus, a misleading conception of the relative parts of the cerebral hemispheres in performing cognitive tasks is created.

Brain↗