Modulating fluid intelligence performance through combined cognitive training and brain stimulation

经颅直流电刺激 心理学 认知训练 刺激 脑刺激 执行职能 认知 背景(考古学) 认知灵活性 神经科学 工作记忆 磁刺激 流体智能 睡眠剥夺对认知功能的影响 听力学 医学 古生物学 生物
作者
Brem A-K.,Almquist Jn-F.,Karen L. Mansfield,Franziska Plessow,Francesco Sella,Emiliano Santarnecchi,Umut Orhan,James A. McKanna,Marianne Pavel,Santosh Mathan,Nick Yeung,Alvaro Pascual-Leone,R. Cohen Kadosh
出处
期刊:Neuropsychologia [Elsevier BV]
卷期号:118: 107-114 被引量:39
标识
DOI:10.1016/j.neuropsychologia.2018.04.008
摘要

It is debated whether cognitive training of specific executive functions leads to far transfer effects, such as improvements in fluid intelligence (Gf). Within this context, transcranial direct current stimulation and recently also novel protocols such as transcranial random noise and alternating current stimulation are being investigated with regards to their ability to enhance cognitive training outcomes. We compared the effects of four different transcranial electrical brain stimulation protocols in combination with nine daily computerized training sessions on Gf. 82 participants were randomly assigned to receive transcranial direct current stimulation (tDCS), random noise stimulation (tRNS), multifocal alternating current stimulation at 40 Hz (mftACS), or multifocal tDCS (mftDCS) in combination with an adaptive and synergistic executive function (EF) training, or to a no-contact control group. EF training consisted of gamified tasks drawing on isolated as well as integrated executive functions (working memory, inhibition, cognitive flexibility). Transfer was assessed with a combined measure of Gf including three established tests (Bochumer Matrizentest - BOMAT, Raven's Advanced Progressive Matrices - RAPM, and Sandia Matrices). We found significant improvements in Gf for the tDCS, mftDCS, and tRNS groups when compared with the no-contact group. In contrast, the mftACS group did not improve significantly and showed a similar pattern as the no-contact group. Mediation analyses indicated that the improvement in Gf was mediated through game progression in the mftDCS and tRNS group. Electrical brain stimulation in combination with sustained EF training can lead to transfer effects in Gf, which are mediated by training progression.
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