Brain correlates of impaired goal management in bipolar mania.

BACKGROUND: Although executive impairment has been reported in mania, its brain functional correlates have been relatively little studied. This study examined goal management, believed to be more closely related to executive impairment in daily life than other executive tasks, using a novel functional magnetic resonance imaging (fMRI) paradigm in patients in this illness phase. METHODS: Twenty-one currently manic patients with bipolar disorder and 30 matched healthy controls were scanned while performing the Computerized Multiple Elements Test (CMET). This requires participants to sequentially play four simple games, with transition between games being made either voluntarily (executive condition) or automatically (control condition). RESULTS: CMET performance was impaired in the manic patients compared to the healthy controls. Manic patients failed to increase activation in the lateral frontal, cingulate and inferior parietal cortex when the executive demands of the task increased, while this increase was observed in the healthy controls. Activity in these regions was associated with task performance. CONCLUSIONS: Manic patients show evidence of impaired goal management, which is associated with a pattern of reduced medial and lateral frontal and parietal activity.

Length of illness does not predict cognitive dysfunction in chronic fatigue syndrome.

Neuropsychological studies have shown cognitive impairment in chronic fatigue syndrome (CFS), particularly in information-processing speed. The aim of this study was to examine the evolution of cognitive impairment in CFS. The evolution is one of the most disabling aspects of the CFS, and it has received little attention in the literature. Fifty-six women with CFS were assessed with neuropsychological tests. Patients were divided into three groups based on the duration of the disease. There were no differences between groups in terms of cognitive function. The cognitive impairment in CFS was not found to be more severe with longer disease duration. These data suggest that there is no progressive cognitive impairment in patients with CFS. Therefore, the cognitive deficits in CFS should be treated with cognitive rehabilitation programs focused on improving emotional distress associated to the illness and on promoting functional abilities.

[The role of depression in cognitive impairment in patients with chronic fatigue syndrome]. / El rol de la depresión en el déficit cognitivo del paciente con síndrome de fatiga crónica.

BACKGROUND AND OBJECTIVE: To analyze the role of depression in cognitive deficits of patients with chronic fatigue syndrome (CFS). PATIENTS AND METHODS: 57 women with CFS were assessed by neuropsychological tests that included measures of attention: CalCap, Mental control of the WMS-III, PASAT, forward and backward digits (WAIS-III), symbol digit modalities test (SDMT); executive functions: Stroop Test, Trail Making Test (TMT A y B), FAS, Tower of London; memory: Auditory-Verbal Learning Test (AVL), Rey Complex Figure (RCF), and psychomotor skills: Grooved Pegboard. The raw scores on the tests were adjusted according to normative data and transformed to T scores. The sample was divided into two groups based on the presence or absence of depression, assessed by clinical interview and administration of the Hospital Anxiety and Depression Scale (HADS). This study compared neuropsychological test scores between the two groups. RESULTS: CFS patients showed cognitive deficit in attention and executive functions, regardless of the presence of depression. There were no significant differences between the two CFS groups. CONCLUSIONS: The cognitive impairments in patients with CFS are not secondary to the presence of depression. These results should be taken into account in the implementation of therapeutic programs in these patients.

El rol de la depresión en el déficit cognitivo del paciente con síndrome de fatiga crónica / The role of depression in cognitive inpairment in patients with chronic fatigue syndrome

Fundamento y objetivo: Analizar el rol de la depresión en el déficit cognitivo del paciente con síndrome de fatiga crónica (SFC). Pacientes y método: Un total de 57 mujeres con diagnóstico de SFC fueron evaluadas mediante tests neuropsicológicos que incluían medidas de atención (CalCap, Control Mental del WMS-III, PASAT, dígitos directos e inversos del WAIS-III y symbol digit modalities test [SDMT]) funciones ejecutivas (test Stroop, Trail Making Test [TMT A y B], FAS y Torre de Londres), memoria (Test de Aprendizaje Auditivo-Verbal [TAAVL] y Test de la Figura Compleja de Rey [FCR]) y velocidad psicomotora (Grooved Pegboard). Las puntuaciones directas fueron ajustadas de acuerdo a datos normativos y transformadas a puntuaciones típicas. La muestra fue dividida en dos grupos en función de la presencia o no de depresión, evaluada mediante entrevista clínica y la administración de la Escala Hospitalaria de Ansiedad y Depresión (HAD). Las puntuaciones de los test neuropsicológicos fueron comparadas entre ambos grupos de pacientes.Resultados: Los pacientes con SFC presentaron déficit cognitivo en funciones atencionales y ejecutivas, independientemente de la presencia de depresión. No se observaron diferencias significativas en funciones cognitivas entre los dos grupos de pacientes.Conclusiones: Estos datos sugieren que el déficit cognitivo que presentan los pacientes con SFC no es secundario a la depresión. Se debería tener en cuenta este resultado en la implementación de un programa terapéutico en estos enfermos (AU)

Background and objective: To analyze the role of depression in cognitive deficits of patients with chronic fatigue syndrome (CFS). Patients and methods: 57 women with CFS were assessed by neuropsychological tests that included measures of attention: CalCap, Mental control of the WMS-III, PASAT, forward and backward digits (WAIS-III), symbol digit modalities test (SDMT); executive functions: Stroop Test, Trail Making Test (TMT A y B), FAS, Tower of London; memory: Auditory-Verbal Learning Test (AVL), Rey Complex Figure (RCF), and psychomotor skills: Grooved Pegboard. The raw scores on the tests were adjusted according to normative data and transformed to T scores. The sample was divided into two groups based on the presence or absence of depression, assessed by clinical interview and administration of the Hospital Anxiety and Depression Scale (HADS). This study compared neuropsychological test scores between the two groups.Results: CFS patients showed cognitive deficit in attention and executive functions, regardless of the presence of depression. There were no significant differences between the two CFS groups.Conclusions: The cognitive impairments in patients with CFS are not secondary to the presence of depression. These results should be taken into account in the implementation of therapeutic programs in these patients (AU)