Question

3. Which techniques provide an image of brain structures? Which techniques provide an image of brain activity? Describe some limitations of capturing images of brain activity.​

Answer 1

Answer:

Neuroimaging, or brain scanning, includes the use of various techniques to directly or indirectly image the structure, function, or pharmacology of the brain. It is a relatively new discipline within medicine, neuroscience, and psychology. Physicians who specialize in the performance and interpretation of neuroimaging in the clinical setting are known as neuroradiologists.

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Answer 2

Answer:

Magnetic Resonance Imaging (MRI)

functional magnetic resonance imaging (fMRI) computerized tomography (CT) positron emission tomography (PET)

Explanation:

1. Magnetic resonance imaging (MRI) and functional magnetic resonance imaging (fMRI) scans are the form of neural imaging most directly useful to the field of psychology.
3. An MRI uses strong magnetic fields to align spinning atomic nuclei (usually hydrogen protons) within body tissues, then disturbs the axis of rotation of these nuclei and observes the radio frequency signal generated as the nuclei return to their baseline status. Through this process, an MRI creates an image of the brain structure. MRI scans are noninvasive, pose little health risk, and can be used on infants and in utero, providing a consistent mode of imaging across the development spectrum. One disadvantage is that the patient has to hold still for long periods of time in a noisy, cramped space while the imaging is performed.

Commonly used brain imaging techniques are: functional magnetic resonance imaging (fMRI) computerized tomography (CT) positron emission tomography (PET)

electroencephalography (EEG) and magnetoencephalography (MEG)

functional near-infrared spectroscopy (fNIRS)

Yet fMRI also has its disadvantages. First, it's expensive. Second, it can only capture a clear image if the person being scanned stays completely still. And third, researchers still don't completely understand how it works.