Introduction to Brain Structure and Basic Functions—Part I

05-Wright (Criminals) 4/19/2008 3:30 PM Page 71. chapter 5. Introduction to Brain Structure and Basic functions part I. The Hindbrain, Midbrain, and Limbic Structures in the Development of Criminality If the human mind were so simple that we could understand it, we would be so simple that we couldn't. Emerson M. Pugh T he most amazing and complex thing known in our world is the human Brain . Although the average adult Brain weighs approximately 3lbs., this relatively small mass of squishy tissue is the source of every thought, emo- tion, decision, and action that is made by an individual. Traditionally, it was believed that by the time the Brain had reached adult size (around age 10), it stopped growing and producing new cells. However, research in the past decade has demonstrated that the Brain is constantly developing and making new cells (called neurogenesis ) even into old age (Gage, 2002; Gould, 1999; Ritter, 2002).

This chapter, as well as the following chapter, will present a basic overview of brain structure formation with a special emphasis on the differential functions of the various structures and lobes, with the current chapter focusing on the hindbrain, midbrain, and subcorti-cal regions, and the following chapter focusing on the forebrain ...

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