NEUROPSYCHOLOGY AND THE NEUROPHYSIOLOGY OF PERCEPTUAL MICROGENESIS

• Authors: Maria Pąchalska , Jolanta Góral-Pólrola , Andreas Mueller , Juri D Kropotov

Abstracts

EN

Perception is one of the psychological operations that can be analyzed from the point of view of microgenetic theory. Our study tests the basic premise of microgenesis theory – the existence of recurrent stages of visual information processing. The event related potentials in two variants of a cued GO/NOGO task (contrasting images of Animals and Plants in the first variant, and contrasting images of Angry and Happy faces in the second variant) were studied during the first 300 ms following stimulus presentation. The independent component analysis was applied to a large collection of ERPs. The functional independent components associated with visual category discrimination, comparison to working memory, action initiation and conflict detection were separated. Information processing in the ventral visual stream (the temporal independent components) occurs at two sequential stages with positive/negative fluctuations of the cortical potential as indexes of the stages. The first stage represents the comparison of the pure physical features of the visual input with the memory trace. The second stage represents the comparison of more sophisticated semantic/emotional features with the working memory. The two stages are the results of interplay between bottom-up and top-down projections in the visual ventral stream.

Keywords

EN

microgenetic theory; event related potentials; stages of information flow; ventral visual stream; independent component analysis

• Publisher: Fundacja Edukacji Medycznej, Promocji Zdrowia, Sztuki i Kultury Ars Medica
• Journal: Acta Neuropsychologica
• Year: 2017
• Volume: 15(4)
• Pages: 365-389

Dates

published

2017

Contributors

author

Maria Pąchalska

author

Jolanta Góral-Pólrola

author

Andreas Mueller

author

Juri D Kropotov

Identifiers

DOI

10.5604/01.3001.0010.7243

Biblioteka Nauki

2137785