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Biomedical subjects

T Gärling

Publications and source records attributed to T Gärling.

12 recordsLinked to original sources
PubMed1990

Discrimination of cardinal compass directions.

The study tested the hypothesis that east-west is more difficult to discriminate than north-south because pre-experimentally the former is associated with right-left and the latter with up-down (or front-behind). Forty-eight undergraduates first learned north, south, east, and west in slides of unknown places. In one condition the compass directions were indicated by labels. Arrows presented in the plane of the slides were in other conditions used to create different associations between the compass directions and the egocentric directions right-left and front-behind. In a subsequent RT task subjects indicated if the directions were the same or different in two consecutively presented slides. No reliable effects were found for same responses but different responses supported the hypothesis in being slower for east-west than north-south when associated with right-left (or left-right) and faster when associated with front-behind (or behind-front).

Adult↗
PubMed1990

A commentary on Rönnberg's distinction between perception and cognition.

In a commentary on a note by Rönnberg (Rönnberg, J. On the distinction between perception and cognition. Scandinavian Journal of Psychology, 1990, 31, 154-156), it is argued that one of Rönnberg's criteria for theoretically distinguishing perception from cognition, that of different biological purposes, is invalid. Congruent with a broad definition of perception and cognition which most researchers agree upon, Rönnberg's two other criteria essentially state that how internally represented information is processed distinguishes between perception and cognition. However, the more strict criterion of whether explicit retrieval of information from memory is necessary is too dependent on a particular, rather limited theoretical framework. A third, less theory-dependent criterion of whether the information available in the stimulus is sufficient to account for comprehension may be useful in research which investigates hypotheses about similarities between perception and cognition.

Cognition↗
PubMed1981

Maintenance of orientation during locomotion in unfamiliar environments.

Accuracy of maintenance of orientation during locomotion in unfamiliar environments was investigated by a laboratory procedure in two experiments. In a dark room, subjects were directed to a starting point, shown a target consisting of a point light on the floor, and required to walk straight by following a moving light line (1.18 m/sec) to a stopping point 1.4 to 11.0 m away. From the stopping point, the subjects numerically estimated the direction and distance to the target, which by then was out of sight. In contrast to control conditions with the target visible, the constant and variable errors were larger, and the constant errors varied with locomotion distance in a way that suggested proportional displacements of the target in the same direction as the subjects walked. Forgetting may in part account for the errors, but the main factor was assumed to be accumulated errors in recurrent central processing of the sensory information received about locomotion distance and target location.

Adolescent↗