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Neuropsychology
Linking brain regions, networks, and circuits with behaviors involved in operating a vehicle is one of the more salient topics of research within traffic psychology. Seven separate brain networks have been identified in driving simulations as being of importance to the neurophysiological processes involved in driving. The networks each have a unique function as outlined by Porter: The parietoccipital sulcus is involved in visual monitoring, motor cortex and cerebellar areas—for gross motor control and motor planning; orbitofrontal and cingulate — for error monitoring and inhibition, including motivation, risk assessment, and internal space; and medial frontal, parietal, and posterior cingulate for vigilance, including spatial attention, visual stream, monitoring, and external space. By linking neuropsychological processes and driving, the ability to understand errors, development, and safety is enhanced. The involvement of motor and cerebellar networks in driving was confirmed by Calhoun, Pekar, and Pearlson (2004). Research into in alcohol dosage and its related effect on neuropsychological processes found that greater quantities of alcohol created a larger likelihood to engage in high speed driving and an increase in the number of times the speed limit was exceeded.