Measure oxygen level changes in the prefrontal cortex of human subjects.
Eliminates many of the drawbacks of fMRI
An fNIR System provides researchers with real-time monitoring of tissue oxygenation in the brain as subjects take tests, perform tasks, view advertisements, experience ergonomic layouts, or receive stimulation. It allows researchers to quantitatively assess brain functions—such as attention, memory, planning, and problem solving—while individuals perform cognitive tasks. Monitor cognitive state of the subject in natural environments.
Easily sync with stimuli presentation systems and integrate with other physiological and neurobehavioral measures that assess human brain activity, including eye tracking, pupil reflex, respiration, and electrodermal activity.
Wired and wireless solutions available for in lab or real world recording—compare systems & software features: fNIRS Solutions.
Try fNIRS tools in the free AcqKnowledge Demo
See More...Apply the sensor array and start recording within five minutes
Use when subjects take tests, perform tasks, view advertisements, experience ergonomic layouts, or receive stimulation
Works within complex lab environments and in non-traditional lab locations for field studies
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fNIR
Wired | fNIRS Functional Near Infrared Optical Brain Imaging
fNIR imager, Sensor, and fNIRSoft Pro software plus all-in-one PC & rolling cart
fNIR
Wired | fNIRS Functional Near Infrared Optical Brain Imaging
fNIR imager, Sensors, and fNIRSoft standard software
fNIR
fNIR
fNIR
Wireless | fNIRS Functional Near Infrared Optical Brain Imaging
Wireless fNIR imager, Sensor, and software plus Tablet
fNIR
Wireless | fNIRS Functional Near Infrared Optical Brain Imaging
Wireless fNIR Imager, sensor, and fNIRSoft standard software
fNIR
fNIR
Continuous Wave fNIRS imaging offers researchers a portable functional near-infrared (fNIR) imaging research tool capable of monitoring brain’s hemodynamics and thereby the cognitive state of the subject in natural environments. fNIRS technology employs specific wavelengths in an optical frequency window which can easily pass through a few centimeters for most tissue, and allow monitoring blood oxygenation changes but monitoring back-scattered light intensity. The relative changes of light intensity across time are due to changes in oxy- and deoxy-hemoglobin and provides information about neural activity.
Ayaz, H., Shewokis, P. A., Curtin, A., Izzetoglu, M., Izzetoglu, K., Onaral, B. Using MazeSuite and Functional Near Infrared Spectroscopy to Study Learning in Spatial Navigation. J. Vis. Exp. (56), e 3443, DOI: 10.3791/3443 (2011).
Conventional Neuroimaging Techniques
fNIRS Neuroimaging Solution for Natural Environments
fNIRS is a powerful near-infrared spectroscopy imaging tool for in-lab cognitive tests and neuromarketing. This technique measures NIR light absorbance in blood of hemoglobin with and without oxygen and provides information about ongoing brain activity similar to functional MRI studies. It eliminates many of the drawbacks of fMRI and provides a safe, affordable, noninvasive solution for cognitive function assessment. The technology empowers researchers by providing greater flexibility for study design, including working within complex lab environments and operating in non-traditional lab locations for field studies (neuromarketing). The fNIR device provides relative change in hemoglobin levels, calculated using a modified Beer-Lambert law.
fNIR data combines with physiological signals acquired through BIOPACs data acquisition and analysis systems such as ECG, respiration, cardiac output, blood pressure, electrodermal activity and stimulus response markers; AcqKnowledge® software provides automated analysis tools for event related potentials and ensemble averaging. The system interfaces with most stimulus presentation systems (such as E-Prime or SuperLab) and BIOPAC’s range of Virtual Reality systems.
Select application areas
Key technical principles
Suggested Papers – Click the ‘Support’ tab for citations
Stimulus Presentation with fNIR
The fNIR100 series of stand-alone functional brain imaging systems provide users with an in-lab assessment of cognitive function. They eliminates a great many of the drawbacks More...
fNIR functional near infrared systems for optical brain imaging can interface with the BIOPAC virtual reality platform. BIOPAC VR provides controlled and replicable experimental setups More...
NIRS Near Infrared Spectroscopy (fNIRS)
The fNIR100 stand-alone functional brain imaging system for continuous NIR spectroscopy (NIRS) provides an in-lab cognitive function assessment. It eliminates a great many of the More...
Event-Related Potentials (ERP) Analysis
Present a variety of visual and auditory stimuli on one computer while AcqKnowledge records the stimuli event markers and psychological responses on another computer. As the More...
Record microvascular oxygenation during muscle activation Sample Data download → fNIR_EMG.zip (extract biceps_EMG_fnir_demo.acq) Using functional Near Infrared (fNIR) to study muscle function can provide greater understanding of the More...
fNIR Webinar | Combining Optical Brain Imaging and Physiological Signals to Study Cognitive Function
fNIRS for Education
fNIRS Lessons Overview
fNIRS article - Jove video
fNIRS on Sport Science | BJ Penn Choke Out
Zarmeen Zahid, Liam McMahon & Michael Lynch (2020): Neural Activity Across the Dorsolateral Prefrontal Cortex and Risk for Suicidal Ideation and Self-Injury, Archives of Suicide Research, DOI: 10.1080/13811118.2020.1779154
Suggested fNIR Articles
The NICO Smart Amplifier is specifically designed to measure thoracic impedance for performing noninvasive cardiac output measurements. The amplifier terminates in two connectors for impedance (Z) and its derivative (dZ), and has a 3 m cable that connects directly to an AMI100D Amplifier Input Module. Use with EL526 strip electrodes and CBL246 adapter or with EL500 […]
View AllThe autonomic nervous system (ANS) is responsible for regulating the functions of all the body’s organs. Take a look at this month’s citations to see how to apply BIOPAC’s tools and learn techniques for ANS research… Comparable responses to a wide range of olfactory stimulation in women and men. Scientific Reports, 13(1), 9059. Lillqvist, M., Claeson, […]
BIOPAC’s comprehensive Introductory ECG Guide addresses fundamental to advanced concerns to optimize electrocardiography data recording and analysis. Topics include: ECG Complex; Electrical and Mechanical Sequence of a Heartbeat; Systole and Diastole; Configurations for Lead I, Lead II, Lead III, 6-lead ECG, 12-lead ECG, precordial leads; Ventricular Late Potentials (VLPs); ECG Measurement Tools; Automated Analysis Routines for extracting, […]
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