title: Auditory change-related cerebral responses and personality traits.
abstract: The rapid detection of changes in sensory information is an essential process for survival. Individual humans are thought to have their own intrinsic preattentive responsiveness to sensory changes. Here we sought to determine the relationship between auditory change-related responses and personality traits, using event-related potentials. A change-related response peaking at approximately 120 ms (Change-N1) was elicited by an abrupt decrease in sound pressure (10 dB) from the baseline (60 dB) of a continuous sound. Sixty-three healthy volunteers (14 females and 49 males) were recruited and were assessed by the Temperament and Character Inventory (TCI) for personality traits. We investigated the relationship between Change-N1 values (amplitude and latency) and each TCI dimension. The Change-N1 amplitude was positively correlated with harm avoidance scores and negatively correlated with the self-directedness scores, but not with other TCI dimensions. Since these two TCI dimensions are associated with anxiety disorders and depression, it is possible that the change-related response is affected by personality traits, particularly anxiety- or depression-related traits.
authors.affiliation: Department of Neuropsychiatry, Mie University Graduate School of Medicine, Tsu, Mie 514-8507, Japan.
authors.forename: Megumi
authors.initials: M
authors.lastname: Tanahashi
authors.affiliation: Department of Neuropsychiatry, Mie University Graduate School of Medicine, Tsu, Mie 514-8507, Japan. Electronic address: motomura@clin.medic.mie-u.ac.jp.
authors.forename: Eishi
authors.initials: E
authors.lastname: Motomura
authors.affiliation: Department of Integrative Physiology, National Institute for Physiological Sciences, Okazaki, Aichi 444-8585, Japan.
authors.forename: Koji
authors.initials: K
authors.lastname: Inui
authors.affiliation: Department of Neuropsychiatry, Mie University Graduate School of Medicine, Tsu, Mie 514-8507, Japan.
authors.forename: Keiko
authors.initials: K
authors.lastname: Ohoyama
authors.affiliation: Department of Neuropsychiatry, Mie University Graduate School of Medicine, Tsu, Mie 514-8507, Japan.
authors.forename: Hisashi
authors.initials: H
authors.lastname: Tanii
authors.affiliation: Department of Neuropsychiatry, Mie University Graduate School of Medicine, Tsu, Mie 514-8507, Japan.
authors.forename: Yoshiaki
authors.initials: Y
authors.lastname: Konishi
authors.affiliation: Department of Neuropsychiatry, Mie University Graduate School of Medicine, Tsu, Mie 514-8507, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Shiroyama
authors.affiliation: Multidisciplinary Pain Center, Aichi Medical University, Nagakute, Aichi 480-1195, Japan.
authors.forename: Makoto
authors.initials: M
authors.lastname: Nishihara
authors.affiliation: Department of Integrative Physiology, National Institute for Physiological Sciences, Okazaki, Aichi 444-8585, Japan.
authors.forename: Ryusuke
authors.initials: R
authors.lastname: Kakigi
authors.affiliation: Department of Neuropsychiatry, Mie University Graduate School of Medicine, Tsu, Mie 514-8507, Japan.
authors.forename: Motohiro
authors.initials: M
authors.lastname: Okada
mesh_terms: D000161:Acoustic Stimulation; D000328:Adult; D001007:Anxiety / Q000523:psychology; D001921:Brain / Q000502:physiology*; D002605:Character; D003863:Depression / Q000523:psychology; D005072:Evoked Potentials, Auditory; D005260:Female; D006801:Humans; D008297:Male; D010555:Personality Inventory; D012737:Sex Factors; D013694:Temperament
keywords: AEP; Change-related response; Harm avoidance; Personality; Self-directedness