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Related Experiment Video

Updated: May 14, 2026

Correlating Behavioral Responses to fMRI Signals from Human Prefrontal Cortex: Examining Cognitive Processes Using Task Analysis

Correlating Behavioral Responses to fMRI Signals from Human Prefrontal Cortex: Examining Cognitive Processes Using Task Analysis

Published on: June 20, 2012

Tangram solved? Prefrontal cortex activation analysis during geometric problem solving.

Hasan Ayaz¹, Patricia A Shewokis, Meltem Izzetoğlu

¹School of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, PA, USA. ayaz@drexel.edu

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference

|February 1, 2013

Summary

This study used functional near-infrared spectroscopy (fNIR) to monitor brain activity during geometric problem-solving. Increased brain activity in the right hemisphere was observed, particularly during difficult or failed tangram tasks.

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Last Updated: May 14, 2026

Correlating Behavioral Responses to fMRI Signals from Human Prefrontal Cortex: Examining Cognitive Processes Using Task Analysis

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Published on: January 30, 2026

Area of Science:

Neuroscience
Cognitive Science
Educational Technology

Background:

Neuroimaging studies link prefrontal and parietal cortices to mathematical problem solving.
Mental arithmetic tasks are common for studying mathematical reasoning, but can involve linguistic interference.

Purpose of the Study:

To investigate neural correlates of geometric problem solving using tangram tasks.
To assess the utility of functional near-infrared spectroscopy (fNIR) for monitoring brain activity during visuospatial reasoning.
To explore differences in brain activation between successful and failed problem-solving attempts.

Main Methods:

Utilized portable functional near-infrared spectroscopy (fNIR) to measure hemodynamic changes.
Monitored anterior prefrontal cortex activity in 12 healthy subjects.
Employed computerized tangram tasks and control tasks involving geometric shape manipulation without problem-solving.

Main Results:

Significant increases in total hemoglobin (HbT) concentration were observed in the right hemisphere during tangram problem solving.
HbT changes were significantly higher in failed trials compared to successful trials.
fNIR successfully detected cortical activation changes related to geometric problem solving.

Conclusions:

fNIR is a viable tool for assessing brain activity during geometric problem solving.
Increased activation during failed trials suggests greater cognitive effort or executive demand.
The safety and portability of fNIR make it suitable for educational settings to optimize learning.