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The relationship between leftward turning bias and visuospatial ability in humans
H W Gordon1, E C Busdiecker, H S Bracha
1University of Pittsburgh, PA.
The International Journal of Neuroscience
|July 1, 1992
Summary
Preferentially turning left correlates with better visuospatial skills, while turning right is linked to lower performance. This turning bias may reflect dopamine system involvement in visuospatial processing.
Area of Science:
- Cognitive Neuroscience
- Neuropsychology
Background:
- Rotational bias, or turning preference, has been linked to dopamine activity asymmetries in animal models.
- Understanding the relationship between motor biases and cognitive functions can offer insights into brain lateralization.
Purpose of the Study:
- To investigate the association between directional turning bias and visuospatial cognitive performance in humans.
- To explore whether turning bias relates to visuospatial ability independently of general cognitive ability.
Main Methods:
- Participants' directional turning bias was assessed over a four-day period.
- Visuospatial and verbal-sequential cognitive skills were evaluated using standardized tests.
- A cognitive profile was calculated as the difference between visuospatial and verbal-sequential abilities.
Main Results:
- A significant positive correlation was observed between a bias for leftward (counter-clockwise) turns and higher visuospatial test performance.
- A bias for rightward turns was associated with below-average visuospatial performance.
- Turning bias was significantly related to the visuospatial-verbal-sequential cognitive profile, independent of overall cognitive level.
Conclusions:
- Directional turning bias in humans is associated with visuospatial processing efficiency.
- The findings suggest that dopamine neurotransmitter system asymmetries may underlie both rotational behavior and visuospatial cognitive function.
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