title: SPECT findings during postictal psychoses: predominance of relative increase of perfusion in right temporal lobe.
abstract: To identify brain regions activated during episodes of postictal psychoses (PIP), we investigated single-photon emission computed tomography (SPECT) data obtained from five patients treated at our institutions and also reviewed four previous studies. Therefore, SPECT findings in a total of 19 cases were analyzed, including 16 patients with temporal lobe epilepsy (TLE). During nonpsychotic states, the laterality of epileptic foci was judged as left-sided in nine episodes, right-sided in six episodes, and nonlateralized in four episodes. In PIP states, 88% of the patients showed a relative increase of right temporal perfusion (increased right temporal or decreased left temporal perfusion). Regardless of whether right- or left-sided pathology was suspected during a nonpsychotic state, SPECT findings obtained during PIP episodes revealed a trend of right-sided temporal predominance.
authors.affiliation: Department of Neuropsychiatry, Aichi Medical University, Nagakute, Aichi, Japan. tomohiro@aichi-med-u.ac.jp
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Oshima
authors.forename: Hiromichi
authors.initials: H
authors.lastname: Motooka
authors.forename: Kousuke
authors.initials: K
authors.lastname: Kanemoto
mesh_terms: D000328:Adult; D004833:Epilepsy, Temporal Lobe / Q000150:complications / Q000000981:diagnostic imaging* / Q000503:physiopathology; D006801:Humans; D008297:Male; D011618:Psychotic Disorders / Q000000981:diagnostic imaging* / Q000209:etiology / Q000503:physiopathology; D013702:Temporal Lobe / Q000098:blood supply* / Q000000981:diagnostic imaging*; D015899:Tomography, Emission-Computed, Single-Photon / Q000379:methods