Semantic satiation in schizophrenia. The role of valence of stimuli
Journal Title: Archives of Psychiatry and Psychotherapy - Year 2010, Vol 12, Issue 4
Abstract
Summary Aim. The primary aim of the research was to define the relation between semantic satiation effect, overactivation of semantic network and a symptom of derealisation in people suffering from schizophrenia. The semantic satiation was defined as the subjective and temporary experience of loss of meaning of repeatedly pronounced words or images which is the result of excessive activation in the semantic network. Because overactivation in semantic network is common feature of schizophrenia, it was expected that schizophrenic patients would be prone to satiation effect more than healthy subjects. Methods. Satiation of negative, positive and emotionally neutral images was determined for patients suffering from schizophrenia and in healthy controls. The subjects were presented with pictures from different categories flashed on a computer screen 3, 13, 23 and 33 times. Each presentation was followed by the category name and the subjects decided, whether the object presented on the photograph belonged to this category. It was expected that the loss of meaning of satiated images would delay participants’ lexical decision and that this effect should be stronger for the schizophrenic than for the control group. Results. Reaction times to a decision based on repeated images were longer in a group of patients suffering from schizophrenia than in the control group. It was also observed that in the group of patients the satiation effect depends on valence of satiated images. Emotionally positive and negative pictures were satiated faster than neutral ones. Discussion. The conducted experiment confirmed the greater susceptibility of patients to the effect of semantic satiation. It has been revealed that subjective experience of the loss of meaning of images depends on the valence of stimuli.
Authors and Affiliations
Katarzyna Prochwicz
Keywords
Related Articles
- EP ID EP155246
- DOI -
- Views 71
- Downloads 0
Value systems and centrality of religiosity as predictors of non-religious and religious coping with stress in early adulthood.
Aim of the studyThe aim of the current study is to investigate whether values and the centrality of religiosity could be good predictors of non-religious and religious coping styles in early adulthood. Although previous...
The neutral stimuli detection deficits in delusion-prone individuals
Aim. The aim of the study was to investigate whether the delusion-prone individuals tend to select relevant information among distractors in order to examine whether the occurrence of overt delusions could be preceded by...
Signal detection in pathological skin picking. Findings from non-clinical sample
Aim of the study . The present study investigated the role of general impulsivity in pathological skin picking (PSP). Material and methods . Three groups of participants: university students who pick their skin and expe...
Piecewise polynomial regression model for interpretation of risperidone depot concentration versus time data
Risperdal ConstaTM (risperidone) was the first long-acting depot formulation of an atypical antipsychotic belonging nowadays to standard treatments for schiz-ophrenic patients. The microsphere technology of this depot fo...
Exploring the factors related to body image dissatisfaction in the context of obesity
Aim. Self-esteem as well as emotion-oriented and problem-oriented coping strategies were examined as a possible predictive factors for body dissatisfaction in an obese female population. This study also examined the rela...