Perception

Sensory deprivation (Sendep) or perceptual isolation is the deliberate reduction or removal of stimuli from one or more of the senses.

Color vision is the ability of an organism or machine to distinguish objects based on the wavelengths (or frequencies) of the light they reflect, emit, or transmit.

Gestalt psychology or gestaltism (German: Gestalt [ɡəˈʃtalt] "shape, form") is a theory of mind of the Berlin School of experimental psychology.

Subjective idealism, or empirical idealism, is the monistic metaphysical doctrine that only minds and mental contents exist.

Absolute pitch (AP), widely referred to as perfect pitch, is a rare auditory phenomenon characterized by the ability of a person to identify or re-create a given musical note without the benefit of a reference tone.

Nous (British: /ˈnaʊs/; US: /ˈnuːs/), sometimes equated to intellect or intelligence, is a philosophical term for the faculty of the human mind which is described in classical philosophy as necessary for understanding what is true or real.

The Purkinje effect (sometimes called the Purkinje shift or dark adaptation) is the tendency for the peak luminance sensitivity of the human eye to shift toward the blue end of the color spectrum at low illumination levels.

Self-image is the mental picture, generally of a kind that is quite resistant to change, that depicts not only details that are potentially available to objective investigation by others (height, weight, hair color, gender, I.Q. score, etc.), but also items that have been learned by that person about themself, either from personal experiences or by internalizing the judgments of others.

The word is also often used metaphorically.

Experience is the knowledge or mastery of an event or subject gained through involvement in or exposure to it.

A sense is a physiological capacity of organisms that provides data for perception.

Eye tracking is the process of measuring either the point of gaze (where one is looking) or the motion of an eye relative to the head.

Naivety (or naïvety or naïveté) is the state of being naïve, that is to say, having or showing a lack of experience, understanding or sophistication, often in a context where one neglects pragmatism in favor of moral idealism.

A Shepard tone, named after Roger Shepard (born 1929), is a sound consisting of a superposition of sine waves separated by octaves.

Apperception (from the Latin ad-, "to, toward" and percipere, "to perceive, gain, secure, learn, or feel") is any of several aspects of perception and consciousness in such fields as psychology, philosophy and epistemology.

Electroreception is the biological ability to perceive natural electrical stimuli.

Sensory processing disorder (SPD; also known as sensory integration dysfunction) is a condition that exists when multisensory integration is not adequately processed in order to provide appropriate responses to the demands of the environment.

Neural adaptation or sensory adaptation is a change over time in the responsiveness of the sensory system to a constant stimulus.

The precedence effect or law of the first wavefront is a binaural psychoacoustic effect.

Reverse speech is a pseudoscience first advocated by David John Oates which gained publicity when it was mentioned on Art Bell's nightly Coast to Coast AM radio talk show.

Backmasking is a recording technique in which a sound or message is recorded backward onto a track that is meant to be played forward.

Visual space is the perceptual space housing the visual world being experienced by an aware observer; it is the subjective counterpart of the space of physical objects before an observer's eyes.