Mood-congruent bias and attention shifts in the different episodes of bipolar disorder |
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Authors: | Ana C García-Blanco Manuel Perea Lorenzo Livianos |
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Institution: | 1. ERI-Lectura , Universitat de València , Valencia , Spain;2. Servicio de Psiquiatría , Hospital Universitari i Politècnic La Fe , Valencia , Spain ana.garcia-blanco@uv.es;4. ERI-Lectura , Universitat de València , Valencia , Spain;5. Servicio de Psiquiatría , Hospital Universitari i Politècnic La Fe , Valencia , Spain |
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Abstract: | An “affective” go/no-go task was used in the different episodes of bipolar patients (euthymic, depressed, and manic) to examine (1) the presence of a mood-congruent attentional bias; and (2) the patients' ability to inhibit and invert associations between stimuli and responses through blocks. A group of healthy individuals served as controls. Results revealed a mood-congruent attentional bias: patients in the manic episode processed positive information faster, whereas those in the depressive episode processed negative information faster. In contrast, neither euthymic patients nor healthy individuals showed any mood-congruent biases. Furthermore, there was a shift cost across blocks for healthy individuals, but not for the patients. This may reflect a general impairment at selecting relevant information (e.g., in terms of disability to inhibit and invert associations between stimuli and responses) in bipolar participants, regardless of their episode. This state/trait dissociation in an episodic and chronic disorder such as bipolar disorder is important for its appropriate characterisation. |
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Keywords: | Bipolar disorder Affective go/no-go task Mood congruent biases Attention shift |
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