Functional Magnetic Resonance Imaging (fMRI)
Professor Trevor Robbins describes functional magnetic resonance imaging (fMRI) technology, which is used to take detailed images of the functioning brain.
MRI works in a rather different way by detecting the conversion of oxyhemoglobin to deoxyhemoglobin and producing the so-called BOLD signal. This works more quickly than PET so that one can typically measure events over a few seconds with fMRI, which you cannot readily measure with PET. So, it has better temporal resolution than PET, but it has less chemical specificity. So, you cannot measure things like dopamine receptor function, for example, using fMRI.
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A review of neuroimaging-related content on Genes to Cognition Online.
Professor Jeffrey Lieberman discusses how neuorimaging studies are providing fresh insights into brain structures associated with schizophrenia.
Neuroimaging techniques help scientists visualize Alzheimer's disease before the disease becomes debilitating.
Neuroimaging studies of autism highlight a dysfunctional mirror neuron system, particularly in an area called the ventrolateral prefrontal cortex.
Electroencephalogram (EEG) recordings measure electrical activity in the brain that is the result of electrochemical signaling between neurons.
Images from brain scans and new microscopy techniques are offering a strikingly clear glimpse of what’s going on underneath the bumpy surface of our skulls.
Professor Trevor Robbins discusses how positron emission tomography (PET) works to provide detailed images of brain structure and chemistry.
Doctor Johan Jansma demonstrates functional magnetic resonance imaging (fMRI), a key neuroimaging technique.
Neuroimaging facilitates the precise mapping of specific brain structures. It is important to remember, however, that specific behaviors or emotions rarely map to specific brain areas.
Bridging the gap between descriptions of human behaviors and underlying neural events has been a dream of both psychologists and neuroscientists for quite some time.