Learning by strategies and learning by drill--evidence from an fMRI study

Area of Science:

• Neuroscience
• Cognitive Psychology
• Cognitive Neuroscience

Background:

• Understanding how the brain learns complex cognitive tasks like arithmetic is crucial.
• Previous research indicates the involvement of parietal and frontal regions in arithmetic processing.
• Investigating the neural basis of different learning strategies can reveal insights into memory and skill acquisition.

Purpose of the Study:

• To determine if learning new arithmetic operations alters brain activation patterns.
• To examine if distinct learning methods (strategy vs. drill) induce differential changes in brain activation.
• To map the neural correlates of acquiring arithmetic expertise.

Main Methods:

• Functional magnetic resonance imaging (fMRI) was employed in a controlled study.
• Participants were trained on novel arithmetic operations using either a strategy-based or drill-based approach.
• Event-related fMRI assessed brain activity for trained (strategy/drill) and untrained arithmetic items.

Main Results:

• Untrained arithmetic items elicited greater bilateral parietal activation, particularly in the right intraparietal sulcus, compared to trained items.
• Trained items showed focused activation in the angular gyri, suggesting integration into existing networks.
• Distinct patterns emerged between learning methods: drill activated medial parietal regions, while strategy engaged the precuneus, potentially for visual imagery.

Conclusions:

• Newly acquired arithmetic skills are integrated into established neural networks for arithmetic processing and memory.
• The brain's response during retrieval differs based on the learning method employed, highlighting the neural basis of strategy versus drill learning.
• The findings suggest that strategy-based learning may involve greater reliance on visual imagery during retrieval compared to drill-based learning.