The Effect of Longitudinal Training on Working Memory Capacities: An Exploratory EEG Study.

Area of Science:

• Cognitive Neuroscience
• Neuroscience

Background:

• Working memory (WM) research is extensive, yet the impact of WM training on cognitive functions remains understudied.
• Existing literature focuses on WM mechanisms rather than training-induced improvements.

Purpose of the Study:

• To investigate the effects of a one-week N-back training program on cognitive performance.
• To explore the underlying neural mechanisms of working memory training using electroencephalography (EEG).

Main Methods:

• Nineteen healthy young adults underwent a one-week N-back training regimen (N=1, 2, 3, 4).
• Behavioral accuracy was measured pre- and post-training.
• EEG power spectrum and functional connectivity were analyzed to assess neural changes.

Main Results:

• Post-training accuracy significantly improved across all N-back levels (1-back, 2-back, 3-back, 4-back).
• EEG analysis revealed increased power in delta, theta, and alpha bands in the left temporal and occipital lobes.
• Enhanced functional connectivity was observed in delta and theta bands.

Conclusions:

• Working memory training positively impacts cognitive performance.
• EEG data suggests that WM training modulates neural activity and connectivity.
• Findings have implications for cognitive enhancement strategies, particularly for individuals susceptible to cognitive decline.