Exploring the role of task performance and learning style on prefrontal hemodynamics during a working memory task

Area of Science:

• Neuroscience
• Cognitive Psychology
• Educational Psychology

Background:

• Prefrontal cortex (PFC) activation patterns during working memory (WM) tasks are documented.
• The influence of individual differences, such as performance and learning style, on neural processes in WM tasks remains under-explored.

Purpose of the Study:

• To investigate how task performance and preferred learning strategies (VARK scores) modulate PFC activation during visual and auditory n-back tasks.
• To explore the relationship between individual learning styles and neural activity in the PFC during WM.

Main Methods:

• Functional near-infrared spectroscopy (fNIRS) was employed to measure PFC activation.
• Participants completed visual and auditory n-back tasks, with performance and VARK scores recorded.
• Analyses controlled for age and examined group differences based on performance (high vs. normal) and learning style.

Main Results:

• High-performing (HP) subjects exhibited lower PFC activation compared to normal performers, with task-dependent lateralization (left DLPFC for auditory, right DLPFC for visual tasks).
• A correlation was found between VARK scores and PFC activation levels: higher visual VARK scores correlated with lower activation in the left DLPFC during auditory tasks and higher activation in bilateral DLPFC during visual tasks.
• HP subjects performing the auditory task showed higher visual VARK scores than normal performers, suggesting a learning style influence on performance and activation.

Conclusions:

• Learning style and task performance significantly influence PFC activation during working memory tasks.
• Findings have implications for understanding the neurological basis of learning styles and for populations with auditory or visual processing deficits.