Review:
Nirs (near Infrared Spectroscopy)
overall review score: 4.2
⭐⭐⭐⭐⭐
score is between 0 and 5
Near-Infrared Spectroscopy (NIRS) is a non-invasive optical imaging technique that measures brain activity and tissue oxygenation by detecting changes in near-infrared light absorption. It utilizes sensors placed on the scalp to monitor blood flow and oxygenation levels, making it useful in neuroscience, medical diagnostics, and cognitive research. NIRS allows real-time monitoring of cerebral functions with relatively portable and cost-effective equipment compared to other imaging modalities like MRI.
Key Features
- Non-invasive measurement of brain activity
- Portable and relatively affordable hardware
- Real-time data acquisition
- Capable of monitoring tissue oxygenation and blood flow
- Suitable for use with infants, children, and adults
- Provides spatial resolution within superficial tissues (up to 3 cm deep)
Pros
- Non-invasive and safe for repeated use
- Portable and suitable for bedside or field studies
- Allows dynamic monitoring during activities or tasks
- Relatively low-cost compared to other neuroimaging tools
Cons
- Limited depth penetration, confined to superficial tissues
- Lower spatial resolution than MRI or PET scans
- Sensitive to motion artifacts and external light interference
- Quantitative accuracy can be affected by individual differences in skull thickness and tissue properties