Glossary O

Octave are tones that have frequencies that are binary multiples of each other (2, 4, etc.). For example, an 800-Hz tone is one Octave above a 400-Hz tone.

Ocular dominance refers to the degree to which a neuron is influenced by stimulation of each eye. A neuron has a large amount of Ocular dominance if it responds only to stimulation of one eye. There is no Ocular dominance if the neuron responds equally to stimulation of both eyes.

Ocular dominance column refers to a column in the visual cortex that contains neurons that respond best to stimulation of the same eye.

Oculesics is the use of the eyes in a communication setting. Whereas in most Western cultures , the use of direct eye contact symbolises listening and attention , direct eye contact is seen as unfavourable by, for example, various Asian cultures. The length of the eye contact is also a cultural variable, as it might extend to become perceived as aggression when used for too long, or as uninterested, when perceived too short.

Oculomotor cue refers to depth cue that depends on our ability to sense the position of our eyes and the tension in our eye muscles. Accommodation and convergence are Oculomotor cues.

- ODD (Oppositional defiant disorder) : - ODD (Oppositional defiant disorder ) : ODD is the acronym of Oppositional defiant disorder which refers to a disruptive behavior disorder of childhood that is characterized by undue hostility , stubbornness, strong temper, belligerence, spitefulness, and self -righteousness.

Odd-eccentric personality disorders are disorders that include paranoid, schizotypal, and schizoid personality disorders which is marked by chronic odd and/or inappropriate behavior with mild features of psychosis and/or paranoia

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