AI Insight
Functional near-infrared spectroscopy (fNIRS) and diffuse optical tomography (DOT) are optical techniques that measure brain activity by detecting changes in cortical blood flow. Unlike MRI-based methods, these technologies are wearable and portable, enabling brain imaging during movement and in naturalistic settings outside traditional laboratory environments. These optical methods are frequently integrated with complementary technologies like EEG and physiological monitoring to provide comprehensive assessments of brain function in real-world conditions.
Why it matters
The portability of these optical brain imaging techniques opens new possibilities for studying brain activity during everyday activities, sports, rehabilitation, and social interactions where traditional stationary imaging systems cannot be used. Integration with other monitoring modalities enables more holistic understanding of brain function in ecologically valid contexts.
Understand the Science
Functional near-infrared spectroscopy (fNIRS) measures brain activity optically based on changes in cortical blood flow. Unlike magnetic resonance imaging, the technique is wearable, so it can be used during movement and outside the lab. Diffuse optical tomography (DOT) extends this principle with improved spatial and depth information. Both are often combined with other modalities, such as electroencephalography (EEG) and physiological signals, to obtain a more complete picture of brain activity in real-world contexts.
Source: Tutorial unites optical brain imaging tools in a single Python framework