Evoked activity
Encyclopedia
Evoked activity is brain
activity that is the result of a task, sensory input or motor output. It is opposed to spontaneous brain activity during the absence of any explicit task.
Most experimental studies in neuroscience
investigate brain functioning by administering a task or stimulus and measure the resulting changes in neuronal activity and behavior. In EEG research, evoked activity or evoked responses specifically refers to activity that is phase-locked to the stimulus onset and is opposed to induced activity, which is a stimulus-related change in (the amplitude of) oscillatory activity
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Brain
The brain is the center of the nervous system in all vertebrate and most invertebrate animals—only a few primitive invertebrates such as sponges, jellyfish, sea squirts and starfishes do not have one. It is located in the head, usually close to primary sensory apparatus such as vision, hearing,...
activity that is the result of a task, sensory input or motor output. It is opposed to spontaneous brain activity during the absence of any explicit task.
Most experimental studies in neuroscience
Neuroscience
Neuroscience is the scientific study of the nervous system. Traditionally, neuroscience has been seen as a branch of biology. However, it is currently an interdisciplinary science that collaborates with other fields such as chemistry, computer science, engineering, linguistics, mathematics,...
investigate brain functioning by administering a task or stimulus and measure the resulting changes in neuronal activity and behavior. In EEG research, evoked activity or evoked responses specifically refers to activity that is phase-locked to the stimulus onset and is opposed to induced activity, which is a stimulus-related change in (the amplitude of) oscillatory activity
Neural oscillations
Neural oscillation is rhythmic or repetitive neural activity in the central nervous system. Neural tissue can generate oscillatory activity in many ways, driven either by mechanisms localized within individual neurons or by interactions between neurons...
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See also
- spontaneous activity
- evoked potentialEvoked potentialAn evoked potential is an electrical potential recorded from the nervous system of a human or other animal following presentation of a stimulus, as distinct from spontaneous potentials as detected by electroencephalography or electromyography .Evoked potential amplitudes tend to be low, ranging...
- ongoing brain activity
- evoked fieldEvoked fieldEvoked fields are part of the magnetoencephalogram. They are brain signals evoked by sensory stimulation, but usually buried by the ongoing brain activity...