Introduction: Electroencephalography (EEG) has attracted the attention of researchers studying cognitive functions of the human brain. It has been shown of several studies that brain EEG frequency bands can be related to specific brain functions (Singer, 1993; Gola et al, 2013). Attention is one of the cognitive performances that is mostly explored in relation to so many living skills and performance. Several investigators have revealed that attention is one of the most important cognitive skills which play significant role in reasoning (Schweizer and Moosbrugger, 2004), safe driving (Lincoln and Radford, 2007), consciousness (Posner, 1994), memory (Cowan, 1997), and so on. Attention, known as concentration and alertness is one of the most important aspects of human cognition and more attention facilitates memory processes (Sternberg, 2006). Sohlberg and Mateer (Scholberg and Mateer, 1989) described five levels or types of attention to include: focused attention, selective attention, alternating attention, divided attention, and sustained attention. Sustained attention is the ability to focus on one specific task for a continuous amount of time or maintain a consistent behavioral response during continuous and repetitive activity without being distracted, and represents higher aspects of attention and cognitive capacity in general (Sarter et al, 2001). The aim of this study was to investigate the relations between electrical brain activity and performance in Conjunctive Continuous Performance Test-Visual (CCPT-V) as a new task to measure sustained attention. Hypothesis: Brain electrical activity significantly correlated with performance in CCPT-V as a measure of sustained attention. Method: Twenty-nine university students voluntarily participated in this study. They were asked to perform CCPT-V. The brain activity recorded throw EEG from Fz, Cz, and Pz areas of the brain during performing CCPT-V. The CCPT-V (figure 1) was developed to assess sustained attention in t
