F11 Lecture 9 - 310 - Measuring brain activity, Sleep

F11 Lecture 9 - 310 - Measuring brain activity, Sleep -...

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Unformatted text preview: Measuring brain activity, sleep, epilepsy 9 February 22, 2011 Admin & Today Today Measuring the brains activity fMRI/DTI/PET Single cell/EEG/ERP/TMS Sleep Functional MRI (fMRI) Functional Magnetic Resonance Imaging uses oxygen consumption in the brain to provide a moving (i.e. dynamic) and detailed image of the functioning brain fMRI will also calculate regional blood flow (CBF: cerebral blood flow) Subtraction techniques are used to ensure that a given task or stimulus is responsible for the activity detected in a particular area of the brain Normal subject Person With TBI (traumatic Brain injury) Motor Action (Finger tapping) TBI patient shows disorganized distribution of activity Resting CBF is diminished For TBI patient Resting CBF fMRI DTI Diffusion Tensor Imaging MRI in which water diffusion at a location is calculated DTI shows preferred direction of diffusion Allows for visualization of directional fibers http://www.kubben.nl/pmwiki/ pmwiki.php? n=Neuro.FMRIAndDTI bramerbrain.blogspot.com/ PET Positron-emission tomography (PET) records emission of radioactivity from injected...
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This note was uploaded on 10/16/2011 for the course PSYCHLOGY 310 taught by Professor Meyhew during the Spring '11 term at Rutgers.

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F11 Lecture 9 - 310 - Measuring brain activity, Sleep -...

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