Functional Magnetic Resonance Imaging

fMRI or functional magnetic resonance imaging, is a relatively young brain activity imaging technology. It works based on detection of the dynamic regulation of blood flow in the brain. Medically, this is termed the haemodynamic response, however it is simply tracking brain activity based on increasing and decreasing demand for oxygen and glucose in the haemoglobin of the blood in the brain.

Unlike detection of electrical signals, it can be performed non-invasively with little to no loss of data. However, the results do not track in real-time, with fMRI data sometimes taking as much as a minute to resolve. This delay can cloud results, on all but long term cognitive activity.

Below, we offer a selection of links from our resource databases which may match this term.

fMRI Functional Magnetic Resonance Imaging

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Brain Reading: fMRI
fMRI or functional magnetic resonance imaging, is one of the newest brain imaging technologies for the first decade of the 21st century. It is a basic form of Brain-Computer Interaction.

Doubts raised over fMRI Validity
Doubts have been raised, over the accuracy of many fMRI (functional magnetic resonance imaging) studies, used to decode the information in the brain.

Specialized Brain Cells Predict Intentions as Well as Define Actions

Industry news, originally posted 23-02-2005. A study by UCLA neuroscientists featuring functional magnetic resonance imaging has for the first time found evidence that mirror neurons help people understand the intentions of others.

Brain Reading: Diffusion Spectrum Imaging
Diffusion spectrum imaging is a new technique at time of writing, which allows magnetic resonance brain imaging, at a much higher level of fidelity than fMRI permits.

Magnetic Resonance Sensor in a Sugar Cube of Space
The debut of a new type of magnetic resonance sensor for brainwaves and electrical activity - which changes the game totally for both fMRI and MEG. For the first time ever, portable, low-cost versions of both are actually a possibility.

Crossing the Blood-Brain Barrier for Improved Visualisation
When it comes to using chemical or radioactive markers to make parts of the brain easier to see, and more finely detailed with a magnetic resonance scan, your options have been rather limited.

Ultrasensitive Imaging: Hunting Every Photon
As the demands for precise imaging in fields such as medicine, astronomy, and real-time machine vision in hostile environments continue to increase, so the demands placed on imaging equipment become ever more stringent. An imaging method based on Single Photon Avalanche Photodiodes (SPAD) offers the potential to ease this bottleneck greatly.

The Brain Unveiled
Technology Review's long, and in depth look at the rise of diffusion spectrum imaging, and how this new neural interface imaging technique is rapidly accelerating the study of both human and animal brains to an extent unparalleled by any previous imaging technique, even fMRI.

Using VR and Phased Imaging to Track Alzheimers Disease Progression in New Ways
In mid 2012, Swiss researchers turned the world of alzheimers plaque imaging on its head: by combining a phased imaging source and an integral VR model generator, for the first time ever we can now track the formation of Alzheimers plaques in real-time in living patients.

Extra Sensory Perceptions: Sensing Magnetic Fields
The first known, successful implant of an extra sensory perception to detect magnetic fields the person with the new sense was near, occurred in 2005, when a small piece of neodymium, which is a rare earth metal, that forms a permanent magnet, was coated in a thin layer of silicon, and implanted into an emergency medical technician's finger.

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