PRIMING EFFECTS IN INDIVIDUALS WITH CORPUS CALLOSUM PATHOLOGY
Journal Title: Acta Neuropsychologica - Year 2013, Vol 11, Issue 3
Abstract
One of the methods that allow us to investigate the lateral organization of involuntary memory is priming. Originally this method was developed as a way to examine visual perception and visuomotor coordination in a cognitive paradigm.Eventually, however, it became clear that the capabilities of priming are much broader. Among other things it provides a unique possibility to examine involuntary memory in subjects with corpus callosum pathology (CCP), since it allows stimuli to be presented in different visual hemifields. The aim of our study was to identify and analyze the contribution of interhemispheric interaction in the work of involuntary memory. In our study we examined 52 normal subjects and 16 subjects with CCP, using the method of priming. We discovered that in normal subjects there was a significant correlation between reaction time (RT) and priming. In the case of a relevant prime, RT decreased; in the case of an irrelevant prime, RT increased. We also discovered that in conditions with no priming, the right hemisphere reacts faster than the left. In subjects with CCP we observed priming system impairment: RT increased when the experimental conditions required interhemispheric interaction. Our experiment demonstrated that the corpus callosum has a major influence on the process of selectivity in involuntary memory and learning, and in normal subjects distributes the energy between the brain hemispheres, suppressing the subdominant hemisphere in the present activity, thus forcing interhemispherical asymmetry.
Authors and Affiliations
M. Kovyazina, D. Kuznetsova
Keywords
Related Articles
- EP ID EP55436
- DOI -
- Views 105
- Downloads 0
Caregiving in the face of non-motor symptoms in Amyotrophic Lateral Sclerosis: a critical review
This paper presents a critical account of research into the non-motor symptoms associated with amyotrophic lateral sclerosis (ALS). Although research examining the cognitive and behavioural features of ALS has been exten...
STATE OF MIND AS A SUBJECTIVE MENTAL SENSATION RESULTS FROM OBJECTIVE BRAIN ACTIVITY FOLLOWING NEUROFEEDBACK-EEG AND RELAXATION TRAININGS
Background: The paper attempts to examine the relationships of the states of mind with brain activity with regards to reports and empirical studies available in the subject literature. Questions were asked about the proc...
CHANGES OF MOOD AND ATTENTION DIVISIBILITY IN ROWERS EXPOSED TO HIGH-INTENSITY TRAINING
Higher probability of succeeding in competitive sports is to a large extent associated with psychological preparation. Emotional and cognitive functioning are important factors that can modulate the attitude of c...
RANDOM NUMBER GENERATION IN PATIENTS WITH APHASIA: A TEST OF EXECUTIVE FUNCTIONS
Randomization performance was studied using the Mental Dice Task in 20 patients with aphasia (APH) and 101 elderly normal control subjects (NC). The produced sequences were compared to 100 computer-generated pseudorandom...
EMOTIONS (UN)EXPRESSED IN WORDS: REFERENTIAL ACTIVITY IN BORDERLINE PERSONALITY DISORDER
Referential activity (RA), defined as the activity of references between verbal and non-verbal representations, gives insight into the representation and symbolization of emotions, which is essential for the dysregulatio...