title: Characteristics of evoked potentials of the human brain during recognition of short acoustic stimuli of different frequencies.
abstract: We report here studies of the efficiency of recognition of short acoustic signals (11-30 msec) whose presentation did not produce mismatch negativity in evoked potentials in the human brain. Nonetheless, stimuli could still be recognized efficiently in these conditions; processing negativity disappeared from evoked potentials and the efficiency of recognition was significantly worsened on presentation of the shortest stimuli (11 msec). It is suggested that processing negativity also has a critical duration for acoustic signals, though this is significantly shorter than the minimum duration of stimuli needed for generating mismatch negativity.
authors.affiliation: Department of Higher Nervous Activity and Psychophysiology, Faculty of Biology and Soil Science, St. Petersburg State University, 7/9 Universitetskaya Bank, 199034 St. Petersburg, Russia.
authors.forename: A A
authors.initials: AA
authors.lastname: Aleksandrov
authors.forename: L V
authors.initials: LV
authors.lastname: Starostina
authors.forename: L N
authors.initials: LN
authors.lastname: Stankevich
mesh_terms: D000161:Acoustic Stimulation / Q000379:methods; D001307:Auditory Perception / Q000502:physiology*; D001921:Brain / Q000502:physiology / Q000528:radiation effects*; D004569:Electroencephalography / Q000379:methods; D005072:Evoked Potentials, Auditory / Q000502:physiology / Q000528:radiation effects*; D006801:Humans; D011930:Reaction Time / Q000502:physiology; D021641:Recognition, Psychology / Q000502:physiology / Q000528:radiation effects*; D013997:Time Factors