Mangina, Constantine A. and Beuzeron-Mangina, Helen and Casarotto, Silvia and Chiarenza, Giuseppe A. and Pietrini, Pietro and Ricciardi, Emiliano Modulation of specific brain activity by the perceptual analysis of very subtle geometrical relationships of the Mangina-Test stimuli: a functional magnetic resonance imaging (fMRI) investigation in young healthy adults. International Journal of Psychophysiology, 73 (2). 157 - 163. ISSN 0167-8760 (2009)
Full text not available from this repository.Abstract
The Mangina-Test provides a neuropsychometric assessment of varying degrees of “Analytical-Specific Visual Perception”, i.e., the ability to identify simple stimuli inserted into more complex ones according to their exact geometrical properties in a limited span of time. Perceptual analysis of stimuli dealing with the exact discrimination of size and dimension is related more to mathematical abilities (MATH), while perceptual analysis of direction and spatial orientation is related more to abilities in reading and reading comprehension (READ). Some stimuli are {MIXED} since they deal with both of the above features combined. We previously determined the distributed neuronal network of analytical-specific visual perceptual processes as measured by the Mangina-Test. Here, we aim at further assessing as to how brain activity is differentially modulated by the discrimination of very subtle category-specific perceptual relationships. Brain activity was measured by functional magnetic resonance imaging in 12 young healthy subjects while they performed a computer-adapted version of the Mangina-Test. Behavioral results of the present study indicate that performance was not different among stimulus categories. However, brain functional data show that analytical-specific perceptual processes for MATH, {READ} and {MIXED} stimuli rely on partially distinct brain circuits. Bilateral posterior parietal, premotor and prefrontal regions along with the anterior cingulate appeared to be more activated by {MATH} stimuli, while {READ} stimuli predominantly activated bilateral medial occipito-temporal, amygdala/parahippocampal and sensorimotor cortices, and the right inferior frontal cortex. Moreover, the posterior parahippocampal cortex showed a higher activity specifically for {MIXED} stimuli. Altogether, these findings demonstrate that in the Mangina-Test, the exact discrimination of very subtle perceptual relationships between geometrical stimuli distinctly modulates cerebral activity, so that category-specific brain responses can be related to identifiable cognitive abilities.
| Item Type: | Article |
|---|---|
| Identification Number: | https://doi.org/10.1016/j.ijpsycho.2009.04.010 |
| Additional Information: | Neural Processes in Clinical Psychophysiology |
| Uncontrolled Keywords: | Abilities in reading/comprehension |
| Subjects: | R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry |
| Research Area: | Computer Science and Applications |
| Depositing User: | Users 72 not found. |
| Date Deposited: | 02 Dec 2015 14:45 |
| Last Modified: | 13 Sep 2016 09:56 |
| URI: | http://eprints.imtlucca.it/id/eprint/2957 |
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