Asymmetrical hemispheric control of visual-spatial attention in adults with attention deficit hyperactivity disorder.
Neuropsychology
; 11(4): 467-473, 1997 Oct.
Article
en En
| MEDLINE
| ID: mdl-9345690
As neuropsychological mechanisms for attention have been hypothesized to be located in the right hemisphere of the brain, several investigators have begun to conceptualize attention deficit hyperactivity disorder (ADHD)-related attentional deficits as involving right-hemispheric abnormalities. The authors evaluated and compared adult patients diagnosed with ADHD with a non-ADHD group of patients using a chronometric visual-spatial attention task that is sensitive to hemispheric differences in efficiency of information processing. Reaction times across different cuing conditions, cue-target delays, and visual fields were assessed. When participants' attention was misdirected with cues in the right visual field and attention had to be switched to a target on the left visual field, there was a longer delay among ADHD adults than non-ADHD adults, specifically when the interval between the cue and target was 800 ms as compared with 100 ms. This specific pattern of dysfunction was interpreted as a difficulty with maintaining attention possibly associated with anterior attention mechanisms in the right hemisphere.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Atención
/
Trastorno por Déficit de Atención con Hiperactividad
/
Percepción Espacial
/
Percepción Visual
/
Lateralidad Funcional
Límite:
Adolescent
/
Adult
/
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Neuropsychology
Asunto de la revista:
NEUROLOGIA
/
PSICOLOGIA
Año:
1997
Tipo del documento:
Article
Pais de publicación:
Estados Unidos