photic stimulus

См. также в других словарях:

• patterned stimulus — a photic stimulus consisting of a checkerboard or other pattern of alternating light and dark areas, used to elicit visual evoked potentials …   Medical dictionary

• Intermittent photic stimulation — In medicine, Intermittent Photic Stimulation, or IPS, is a form of visual stimulation used in conjunction with electroencephalography to investigate anomalous brain activity triggered by specific visual stimuli, such as flashing lights or… …   Wikipedia

• inattention — Lack of attention; negligence. selective i. an aspect of attentiveness in which a person attempts to ignore or avoid perceiving that which generates anxiety. sensory i. the inability to feel a tactile stimulus when a similar stimulus, presented… …   Medical dictionary

• Trance — denotes a variety of processes, techniques, modalities and states of mind, awareness and consciousness. Trance states may occur involuntarily and unbidden.The term trance may be associated with meditation, magic, flow, and prayer. It may also be… …   Wikipedia

• sensory reception, human — Introduction  means by which humans react to changes in external and internal environments.   Ancient philosophers called the human senses “the windows of the soul,” and Aristotle described at least five senses sight, hearing, smell, taste, and… …   Universalium

• Reflex — A reaction that is involuntary. The corneal reflex is the blink that occurs with irritation of the eye. The nasal reflex is a sneeze. * * * 1. An involuntary reaction in response to a stimulus applied to the periphery and transmitted to the… …   Medical dictionary

• Pelagic fish — A school of large pelagic predator fish (giant trevally) sizing up a school of small pelagic prey fish (anchovies) Pelagic fish live near the surface or in the water column of coastal, ocean and lake waters, but not on the bottom of the sea or… …   Wikipedia

• commercial fishing — Introduction  the taking of fish and other seafood and resources from oceans, rivers, and lakes for the purpose of marketing them.       Fishing is one of the oldest employments of humankind. Ancient heaps of discarded mollusk shells (shell… …   Universalium

• Electroencephalography — (EEG) is the measurement of electrical activity produced by the brain as recorded from electrodes placed on the scalp.Just as the activity in a computer can be understood on multiple levels, from the activity of individual transistors to the… …   Wikipedia

• stimulation — 1. Arousal of the body or any of its parts or organs to increased functional activity. 2. The condition of being stimulated. 3. In neurophysiology, the application of a stimulus to a responsive structure, such as a nerve or muscle, regardless of… …   Medical dictionary

• Sneeze — A sneeze (or sternutation) is a semi autonomous, convulsive expulsion of air from the lungs, most commonly caused by foreign particles irritating the nasal mucosa. Sneezing can further be triggered through sudden exposure to bright light, a… …   Wikipedia