A sensation or feeling that persists or develops after the primary sensory stimulus has been removed.
Compound of 'after' and 'sensation' (from Latin sensatio, derived from sentire, to feel). This psychological and sensory term emerged in 19th-century neuroscience.
Aftersensations explain why your hand feels tingly after you stop holding your cell phone—your nerves keep firing briefly after the stimulus ends, a phenomenon called 'phantom sensation' in medical literature.
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