Ear potential that is transmitted along the spiral ganglion, which sends information through the auditory portion of the vestibulocochlear nerve to the temporal lobe of the brain. The human ear can generally hear sounds with frequencies between 20 Hz and 20 kHz (the audio range). Sounds outside this range are considered infrasound (below 20 Hz) or ultrasound (above 20 kHz) Although hearing requires an intact and functioning auditory portion of the central nervous system as well as a working ear, human deafness (extreme insensitivity to sound) most commonly occurs because of abnormalities of the inner ear, rather than in the nerves
Above the Influence and increases in the perceptions that others use marijuana." In 2011, Ohio State University released the results of an independent scientific study stating that the "Above the Influence" campaign appears to have effectively reduced marijuana use by teenagers. "Evidence for the success of "Above the Influence" is especially heartening because the primary independent evaluation of its predecessor campaign, 'My Anti-Drug', showed no evidence for success", said Michael Slater, principal investigator of the new study and professor of communication at Ohio State University. "The 'Above the Influence' campaign appears to be successful because it taps into the desire by teenagers to