Visual perception is the ability to interpret the surrounding environment by processing information that is contained in visible light. The resulting perception is also known as eyesight, sight, or vision (adjectival form: visual, optical, or ocular). The various physiological components involved in vision are referred to collectively as the visual system, and are the focus of much research in psychology, cognitive science, neuroscience, and molecular biology.

The visual system in humans and animals allows individuals to assimilate information from the environment. The act of seeing starts when the lens of the eye focuses an image of its surroundings onto a light-sensitive membrane in the back of the eye, called the retina. The retina is actually part of the brain that is isolated to serve as a transducer for the conversion of patterns of light into neuronal signals. The lens of the eye focuses light on the photoreceptive cells of the retina, which detect the photons of light and respond by producing neural impulses. These signals are processed in a hierarchical fashion by different parts of the brain, from the retina upstream to central ganglia in the brain.

Tremaine "Trey" Aldon Neverson (born November 28, 1984), better known by his stage name Trey Songz, is an American singer-songwriter, rapper, record producer and actor. His debut album, I Gotta Make It, was released in 2005, while his second album, Trey Day, was released in 2007. His third album, Ready, was released in 2009 while his fourth studio album, Passion, Pain & Pleasure, was released on September 14, 2010.

Songz was born Tremaine Aldon Neverson on November 28, 1984, in Petersburg, Virginia. Raised as a military brat, Songz did not have aspirations to have a musical career as a child due to his shyness, saying "Singing wasn't a reality for me, until other people started noticing I sounded good." He recognized his vocal abilities at the age of 14. Reluctant to sing, he began performing with encouragement by friends and family in high school. Record producer Troy Taylor discovered Songz during a talent show in 2000, which led him to signing a recording contract with Atlantic Records in 2002. After graduating from high school in 2002, Songz moved to New Jersey to begin recording his debut album, though recording didn't actually begin until 2003.

Onika Tanya Maraj (born December 8, 1982), known by her stage name Nicki Minaj ( /mɪˈnɑːʒ/), is a Trinidadian-born American rapper and singer-songwriter. She was born in Saint James, Trinidad and Tobago and when she was 5 years of age she moved to the New York City borough of Queens, where she grew up.

After releasing three mixtapes between 2007 and 2009 and being signed to Young Money Entertainment in August 2009, Minaj released her debut album, Pink Friday, in November 2010. It quickly became a commercial success, peaking at number one on the U.S. Billboard 200 and being certified Platinum by the Recording Industry Association of America (RIAA) a month after its release. She became the first female solo artist to have seven singles on the Billboard Hot 100 at the same time. Her second single, "Your Love", reached number 1 on the Billboard Hot Rap Songs chart, making Minaj the first female artist to top the chart unaccompanied since 2002. She also became the first female artist to be included on MTV's Annual Hottest MC List. Minaj was named the 2011 Rising Star by Billboard. Her second studio album, Pink Friday: Roman Reloaded was released on April 3, 2012.

Nicholas Scott "Nick" Cannon (born October 8, 1980) is an American actor, and television personality. On television, Cannon began as a teenager on All That before going on to host The Nick Cannon Show, Wild 'N Out, and America's Got Talent. He acted in the films Drumline, Love Don't Cost a Thing, and Roll Bounce. As a "rapper," he released his debut self-titled album in 2003 with the hit single "Gigolo", a collaboration with singer R. Kelly. In 2006, Cannon recorded singles "Dime Piece" and "My Wife" for a planned album Stages, which was never released. Cannon married American R&B/pop singer Mariah Carey on April 30, 2008.

Cannon was born in San Diego, California, to parents Beth, an accountant, and James Cannon, a super-powerful motivational televangelist. Growing up, he divided his time between San Diego, where his mother lived, and Charlotte, North Carolina, where his father had worked. At age 11, Cannon received his first break doing stand-up comedy on his father's local cable access program.