Resumo

ROJAS-ALVAREZ, Sebastián Alonso; VALENCIA, Ancizar  e  BARRERA, Mauricio Alberto. Placebo Effect and Binaural Sound Stimulation of Beta Wave and Theta Wave in a Working Memory Task Performance. CES Psicol [online]. 2020, vol.13, n.1, pp.32-51. ISSN 2011-3080.  https://doi.org/10.21615/cesp.13.1.3.

In this work, a quasi-experimental study of repeated measures with case and control groups was carried out, whose objective was to measure the effect of binaural sounds of beta and theta waves, and the placebo informa tion related to them, on the performance of a computerized working memory task, Automated Operation Span Task -AOSPAN- free version of Unsworth, Heitz, Schrock and Engle (2005). This task was repeated in two sessions separated by an interval of two weeks, one of which was resolved while listening to a binaural sound stimulation of beta wave or theta that, depending on the group, was supported or not by placebo information. 98 people with different levels of schooling were tested twice, divided into six experimental groups and one control group. Significant differences were found related to time duration in performing the experimental task associated with placebo information; it was showed an improvement the second time the task was administered. Due to ambiguities in the results, despite finding significant differences associated with binaural stimulation of beta wave, it was not possible to establish concrete relations between the improvement in the memory of sets up four elements with the presence of this variable. No significant differences were found in the global recall variables, which can be explained by the type of memory task performed.

Palavras-chave : Working Memory; Binaural Sounds; AOSPAN; Computerized Assessment; Psychopy; Information Processing; Immediate Memory; Psychology; Experimental Psychology; Sound Stimulation; Short-Term Memory; Interference Tests..

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