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Published on: November 16, 2017
[Presentation of an assessment battery for visual mental imagery and visual perception]
C Bourlon1, S Chokron, A-C Bachoud-Lévi
1Inserm UMRS 975, pavillon Claude-Bernard, hôpital Pitié-Salpêtrière (AP-HP), 47, boulevard de l'Hôpital, 75013 Paris, France; UPMC université Paris 06, Paris, France; Service de neurologie, clinique Les Trois Soleils, Boissise-le-Roi, France.
Introduction:
The relationship between visual perception and visual mental imagery are at the center of a lively theoretical debate between those postulating common neurocognitive processes between perception and imagery and those who emphasize the differences between these two entities. Neuropsychology can make an important contribution to this debate, by assessing associations and dissociations between perceptual and imaginal deficits in patients with brain damage. However, currently there is no standardized test battery available for such assessments.
Material And Methods:
Here we present a battery of paper-and-pencil tests assessing different domains of visual mental imagery and visual perception abilities: object form and color, animals, orthographic material, numbers, faces, and space. We also explored the effects of age, educational level and gender on performance on a group of 103 participants free of neurological damage.
Results:
The battery includes two parts: one composed of 14 tests assessing mental imagery and the second part composed of eight tests assessing the abilities of visual perception. We calculated the correlations between the tests, and found that, with the exception of orthographic material, there were generally poor correlations between imagery and perceptual tests.
Conclusion:
This result seems inconsistent with hypotheses postulating a strict correspondence between perceptual and imagery abilities.
