Phineas Gage is regarded as one the fatal brain injuries. Gage endured brain injury, which transformed his character. Gage and his colleagues were excavating rocks to pave way for railroad track during the fateful incidence. Gage, together with his colleagues suffered serious injuries after the railroad collapsed. Gauge went to seek medical attention from doctors who learnt that he had suffered severe brain damage. The doctors alleged, “The accident caused damage to brain structures leading to Gage behaving differently” (Barker, 1995, p. 673). This paper will focus on Phineas Gage accident. Moreover, it will discuss how accidents helped to construe how the different brain segments sustain cognitive functions. Phineas Gage accident offered a good platform to learn how brain supports cognitive functions. The accident revealed that different brain segments have different roles in propping up cognitive functions. From the accident, doctors learnt that the “left frontal region assists in character development” (Barker, 1995, p. 675). Doctors scanned Gage’s skull, shortly after the accident to determine the abrasion that made him to behave differently. The examination revealed that Gage had suffered damage to his left frontal region leading to changes in his character. Left frontal region is responsible for character growth and, when damaged, it leads to the victim losing their character. Besides, “the accident led to the damage of right and left prefrontal cortices” (Barker, 1995, p. 677). The prefrontal cortices help an individual to make cogent judgments and to control their emotions (Barker, 1995). By examining Phineas Gage skull, doctors were able to discern how the brain operates. The examination helped the doctors to understand how the different segments of the brain support cognitive functions. The brain assists in interpreting and solving problems. Fleischman posits, “Cognitive function of the brain requires transmission of signals from left to right hemisphere….corpus callous helps to transmit signals between the two hemispheres” (2002, p. 74). “Once the left part of the body receives signals, it sends them to the right segment of the brain while signals received by the right part of the body are sent to the left segment” (Macmillan, 1986, p. 70). The two hemispheres then process the signals. They are deemed principal at one point. For instance, the left hemisphere assists in interpreting and making reasonable judgments. An individual that suffers damage to the left hemisphere during a tragedy encounters challenges in making logical decisions (Fleischman, 2002). Such a person cannot solve even the easiest problems, thus looking for assistance from their friends or relatives. Additionally, the brain supports movement synchronization. Fleischman posits, “There is a motor area behind the frontal lobe that helps to coordinate movement” (2002, p. 81). The area permits voluntary movement, which makes it possible for an individual to walk. Accident may incapacitate the motor area. If this happens, it may be hard for the victim to walk or move from one place to another. In addition to movement coordination, brain aids to control one’s emotions. After Gage suffered brain damage, he could no longer control his emotions. It became hard for hi