Tetris and Word games lead to fewer intrusive memories when applied several days after analogue trauma. (10th November 2017)

• Record Type: Journal Article
• Authors: Hagenaars, Muriel A.; Holmes, Emily A.; Klaassen, Fayette; Elzinga, Bernet
• Is Part Of: European journal of psychotraumatology. Volume 8(2017)Supplement 1
• Publication Date: 2017-11-10
• Subjects: Trauma film -- posttraumatic stress disorder -- PTSD -- reconsolidation -- intrusions -- intrusive memory -- involuntary memory -- mental imagery -- working memory; A trauma film paradigm was used to examine effects of a supposedly visuospatial (Tetris) and a more verbal task (Word games) versus no task (reactivation-only) on intrusion frequency in a reconsolidation time frame. -- Reactivation+Tetris and reactivation+Word games lead to relatively fewer intrusions than reactivation-only, even when applied four days after analogue trauma. -- Two hypotheses were supported: (a) There is an intervention effect with both task conditions being equally effective (reactivation+Tetris = reactivation+Word games < reactivation-only), and (b) There is a modality effect with Word games being the most effective task (reactivation+Word games < reactivation+Tetris < reactivation-only). -- Participants rated Word games as more difficult than Tetris, but there was no difference in intrusion frequencies during the performance of both tasks. Tetris and Word games lead to fewer intrusive memories when applied several days after analogue trauma.; Post-traumatic stress disorder -- Periodicals; Stress Disorders, Post-Traumatic; Post-traumatic stress disorder; Electronic journals; Periodicals; Periodicals; Fulltext; Internet Resources; Periodicals; 616.8521
• DOI: 10.1080/20008198.2017.1386959
• Languages: English
• ISSNs: 2000-8198

Abstract

ABSTRACT: Background : Intrusive trauma memories are a key symptom of posttraumatic stress disorder (PTSD), so disrupting their recurrence is highly important. Intrusion development was hindered by visuospatial interventions administered up to 24 hours after analogue trauma. It is unknown whether interventions can be applied later, and whether modality or working-memory load are crucial factors. Objectives : This study tested: (1) whether a visuospatial task would lead to fewer intrusions compared to a reactivation-only group when applied after memory reactivation four days after analogue trauma exposure (extended replication), (2) whether both tasks (i.e. one aimed to be visuospatial, one more verbal) would lead to fewer intrusions than the reactivation-only group (intervention effect), and (3) whether supposed task modality (visuospatial or verbal) is a critical component (modality effect). Method : Fifty-four participants were randomly assigned to reactivation+Tetris (visuospatial), reactivation+Word games (verbal), or reactivation-only (no task). They watched an aversive film (day 0) and recorded intrusive memories of the film in diary A. On day 4, memory was reactivated, after which participants played Tetris, Word games, or had no task for 10 minutes. They then kept a second diary (B). Informative hypotheses were evaluated using Bayes factors. Results : Reactivation+Tetris and reactivation+Word games resulted in relatively fewer intrusions from the last day of diary A to the first day of diary B than reactivation-only (objective 1 and 2). Thus, both tasks were effective even when applied days after analogue trauma. Reactivation-only was not effective. Reactivation+Word games appeared to result in fewer intrusions than reactivation+Tetris (objective 3; modality effect), but this evidence was weak. Explorative analyses showed that Word games were more difficult than Tetris. Conclusions : Applying a task four days after the trauma film (during memory reconsolidation) was effective. The modality versus working-memory load issue is inconclusive.