Neurophysiological basis of microgenesis theory: stages of visual information flow as reflected in functionally defined components of event related potentials in man
Journal Title: Acta Neuropsychologica - Year 2012, Vol 10, Issue 1
Abstract
This is a first study that experimentally tested the basic premise of microgenetic theory: existence of recurrent stages of information processing in the brain. The application of Independent Component Analysis (ICA) to a substantial number of individual multi-channel ERPs in two variants of the cued GO/NOGO task enabled us to decompose the sensory-related ERP waves into four functionally distinct components. In the first variant of the cued GO/NOGO task images of plants were compared with images of animals (Animal-Animal pairs corresponded to GO trails, whereas Animal-Plant pairs corresponded to NOGO trials), in the second variant faces of the same person with different emotional expressions were compared. According to sLORETA the extracted components were generated in the occipital, left and right temporal and right parietal cortical areas. Each of the components was characterized by two sequential activation patterns in the GO condition. Each activation pattern included a positive fluctuation followed by a negative fluctuation. In the NOGO condition an additional mismatch positivity followed the GO-like positive fluctuation. At the early stage (around 160 ms after stimulus) the mismatch positivity at the left temporal component was associated with the hypothetical operation of comparing the physical features of the stimuli with working memory. At the late stage (around 260 ms) the mismatch positivity at the left temporal component was associated with the operation of comparing semantic features of the stimuli with working memory.
Authors and Affiliations
Juri Kropotov, Andreas Mueller
Keywords
Related Articles
- EP ID EP55387
- DOI -
- Views 116
- Downloads 0
THE HEALTH RELATED QUALITY OF LIFE (HRQL) OF A PATIENT WITH SEVERE TAKAYASU’S ARTERITIS COMPLICATIONS BEFORE AND AFTER ENDOVASCULAR TREATMENT
Background: The aim of this article was an evaluation of the Health Related Quality of Life (HRQL) of a patient with Takayasu’s arteritis complications before and after endovascular treatment. I would have hypothesized t...
DOUBLE DISSOCIATIONS IN THE PROCESSING OF CONCEPTUAL RELATIONS
The aim of the present paper is to analyze if taxonomic and thematic conceptual relations are processed primarily in the linguistic system, in the simulation system or in both. Because the verbal modality is the best way...
COMPARISON OF COGNITIVE PROFILES IN CEREBRO-VASCULAR ACCIDENT AND TRAUMATIC BRAIN INJURY PATIENTS INTERNED AT IGNACE DEEN UNIVERSITY HOSPITAL OF GUINEA-CONAKRY
Cognitive and behavioral symptoms can be sequelae of both cerebro-vascular accident (CVA) and traumatic brain injury (TBI). In sub-Saharan African countries, including Guinea, there have been few studies focused on brain...
BRAIN ACTIVITY RELATED TO THE CONGRUENT AND INCONGRUENT PART OF THE STROOP TEST PERFORMANCE- NOT ONLY DIFFERENCES BUT ALSO SIMILARITIES IN THE BRAIN ACTIVITY PATTERN. A NEUROIMAGING PET(H2O15) STUDY
Background: Previous studies on brain activity during the completion of the Stroop test focused mainly on finding differences between brain activity during the completion of the congruent and incongruent parts of the tes...
REHABILITATION OF EXECUTIVE FUNCTIONING IN AN AUTISTIC CHILD: A CASE STUDY
[b]Background:[/b]Executive functions disorders in autistic persons have been reported in a number of studies. The most pronounced symptom is an inability to shift the course of action, which leads to a reluctance to all...