Brain Imaging Techniques Used Today

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Brain Imaging Techniques
Duane Perrin
Eastern Oregon University

Since the beginning of time people have been trying to understand what is going on inside our heads. With the development and continuous advancement of brain imaging techniques it has become possible to do just that. It is now possible to produce both structural and functional images of the brain. While brain imaging techniques have advanced significantly throughout history and proven extremely useful, they still have their limitations. The purpose of this paper is to give a brief history of brain imaging developments, explain the major brain imaging techniques being used today, and provide information about what each scan can and can’t tell us about the human mind and brain.
A brief history of brain imaging as described by Raichle (2009) begins with the introduction of computerized tomography (CT) in the early 1970s and development of magnetic resonance imaging (MRI) shortly thereafter, which prompted the invent and use of positron emission tomography (PET), and then functional magnetic resonance imaging (fMRI) which came in the 1990s (p.119). Since then other forms of brain scanning technology have appeared such as the Magnetoencephalography (MEG) scan, and other variations of PET and MRI such as diffusion tensor imaging (DTI). The appearance of these types of brain imaging techniques has provided great insight into the structure and function of the human mind.
First, it is important
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