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However, Botox is a neurotoxin and "it blocks the release of acetylcholine at neuromuscular junctions" (Pinel, 2007, p 88).

There are several types of imaging procedures which can be used to study the brain; some of these methods provide more information than others. Contrast X-rays involve injection dye into the patient to which then illuminates some areas more than others. Areas of interest can be studied because they are easily identified due to the presence of the dye. X-Ray Computed Tomography is another method of brain imaging, although the patient lies with their head in a cylinder with an x-ray beam to one side, and a detector on the other. Images of the brain can be obtained from all angles around the head (Pinel, 2007, p 89).

Magnetic Resonance Imaging is said to be more effective than tomography, because it offers a colored, three dimensional look inside the brain by sending radio waves through it. The Functional MRI is said to be the most effective of all brain imaging techniques due to higher resolution which offers a clearer picture of not only the structure of the brain, but also the activity. A PET scan or Positron Emission Tomography also provides information on neural activity, however, an injection of a foreign substance is necessary to produce the required results (Pinel, 2007, p 90).

While scientists continue to explore new ways to study the human brain, existing methods are continually being improved. Less invasive methods are always best because it permits testing in human subjects rather than animals. Will it be possible to identify the cause of neurological diseases in the near future? Perhaps, in the meantime rigorous research continues into the most fascinating and complex structure known to man; the brain.

Reference

Pinel, J. P. J. (2007). Basics of biopsychology. Boston, MA: Allyn and Bacon.

Learn more about this author, Kerry Hosking.
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