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Keywords = audiovisual n-back

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21 pages, 4435 KiB  
Article
Audiovisual n-Back Training Alters the Neural Processes of Working Memory and Audiovisual Integration: Evidence of Changes in ERPs
by Ao Guo, Weiping Yang, Xiangfu Yang, Jinfei Lin, Zimo Li, Yanna Ren, Jiajia Yang and Jinglong Wu
Brain Sci. 2023, 13(7), 992; https://doi.org/10.3390/brainsci13070992 - 24 Jun 2023
Cited by 7 | Viewed by 5882
Abstract
(1) Background: This study investigates whether audiovisual n-back training leads to training effects on working memory and transfer effects on perceptual processing. (2) Methods: Before and after training, the participants were tested using the audiovisual n-back task (1-, 2-, or 3-back), to detect [...] Read more.
(1) Background: This study investigates whether audiovisual n-back training leads to training effects on working memory and transfer effects on perceptual processing. (2) Methods: Before and after training, the participants were tested using the audiovisual n-back task (1-, 2-, or 3-back), to detect training effects, and the audiovisual discrimination task, to detect transfer effects. (3) Results: For the training effect, the behavioral results show that training leads to greater accuracy and faster response times. Stronger training gains in accuracy and response time using 3- and 2-back tasks, compared to 1-back, were observed in the training group. Event-related potentials (ERPs) data revealed an enhancement of P300 in the frontal and central regions across all working memory levels after training. Training also led to the enhancement of N200 in the central region in the 3-back condition. For the transfer effect, greater audiovisual integration in the frontal and central regions during the post-test rather than pre-test was observed at an early stage (80–120 ms) in the training group. (4) Conclusion: Our findings provide evidence that audiovisual n-back training enhances neural processes underlying a working memory and demonstrate a positive influence of higher cognitive functions on lower cognitive functions. Full article
(This article belongs to the Special Issue Deep Research of EEG/fMRI Application in Cognition and Consciousness)
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17 pages, 2403 KiB  
Article
Effects of Audiovisual Interactions on Working Memory Task Performance—Interference or Facilitation
by Yang He, Zhihua Guo, Xinlu Wang, Kewei Sun, Xinxin Lin, Xiuchao Wang, Fengzhan Li, Yaning Guo, Tingwei Feng, Junpeng Zhang, Congchong Li, Wenqing Tian, Xufeng Liu and Shengjun Wu
Brain Sci. 2022, 12(7), 886; https://doi.org/10.3390/brainsci12070886 - 6 Jul 2022
Cited by 7 | Viewed by 4111
Abstract
(1) Background: The combined n-back + Go/NoGo paradigm was used to investigate whether audiovisual interactions interfere with or facilitate WM. (2) Methods: College students were randomly assigned to perform the working memory task based on either a single (visual or auditory) or dual [...] Read more.
(1) Background: The combined n-back + Go/NoGo paradigm was used to investigate whether audiovisual interactions interfere with or facilitate WM. (2) Methods: College students were randomly assigned to perform the working memory task based on either a single (visual or auditory) or dual (audiovisual) stimulus. Reaction times, accuracy, and WM performance were compared across the two groups to investigate effects of audiovisual interactions. (3) Results: With low cognitive load (2-back), auditory stimuli had no effect on visual working memory, whereas visual stimuli had a small effect on auditory working memory. With high cognitive load (3-back), auditory stimuli interfered (large effect size) with visual WM, and visual stimuli interfered (medium effect size) with auditory WM. (4) Conclusions: Audiovisual effects on WM follow the resource competition theory, and the cognitive load of a visual stimulus is dominated by competition; vision always interferes with audition, and audition conditionally interferes with vision. With increased visual cognitive load, competitive effects of audiovisual interactions were more obvious than those with auditory stimuli. Compared with visual stimuli, audiovisual stimuli showed significant interference only when visual cognitive load was high. With low visual cognitive load, the two stimulus components neither facilitated nor interfered with the other in accordance with a speed–accuracy trade-off. Full article
(This article belongs to the Section Sensory and Motor Neuroscience)
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