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Mood and neuropsychological changes in women with midlife depression treated with escitalopram.

OBJECTIVE: This study assessed mood and neuropsychological function in a population of middle-aged women with major depressive disorder treated with escitalopram. METHODS: Psychometric data measuring severity of depression were collected from 19 women and neuropsychological data were collected from 17 women aged between 45 and 65 years with a Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, diagnosis of major depression in a study in the Behavioral Neuroendocrinology Program at the Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine. All women were treated with escitalopram in an open-label design. Mean age was 55.94 years and mean number of years of education was 16.36 years. Diagnosis of major depressive disorder was assessed with the Structured Clinical Interview for the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, and mood was evaluated with the 21-item Hamilton Depression Rating Scale (HAM-D) at baseline and at weekly follow-ups for 12 weeks. Cognition was assessed at baseline and 3 months after treatment using a neuropsychological test battery, which included an abbreviated measure of Full Scale Intelligence Quotient, measures of attention and processing speed, verbal and nonverbal memory, executive functioning, and verbal fluency. Self-report data were collected on current menopause status and current hormone therapy use in the postmenopausal women. Paired sample t tests were used to analyze the change in total HAM-D scores and neuropsychological variables. RESULTS: Statistically significant improvements were found in total HAM-D score, Wechsler Memory Scale III Logical Memory 1st Recall, I, and II scores, Wechsler Memory Scale III Visual Reproduction I scores, and Trail Making Test Part B scores. There was a statistically significant decrease in Controlled Oral Word Association Test FAS scores. CONCLUSIONS: Treatment of depression with escitalopram in a population of middle-aged women was shown to improve mood and cognitive efficiency in complex attention, short- and long-term recall of contextual information, short-term recall of visual information, and cognitive flexibility; however, it was shown to worsen phonemic fluency.

Antidepressive Agents, Second-Generation↗

Socioeconomic position across the lifecourse and cognitive function in late middle age.

OBJECTIVES: To examine the influence of childhood and adult socioeconomic position, socioeconomic mobility, and cumulative disadvantage across the lifecourse on cognitive function in late middle age. METHODS: Cross-sectional population-based study of 486 men age 58 and 64 from eastern Finland. Respondent's socioeconomic position in childhood was measured using parent's education and occupation, and respondent's position in adulthood was indicated by attained education and personal income. Cognitive function was assessed using five neuropsychological tests: Trail Making, Selective Reminding, Verbal Fluency, Visual Reproduction, and the Mini-Mental State Exam. RESULTS: Each indicator of socioeconomic position made statistically independent contributions to levels of cognitive function: Respondents from poor childhood backgrounds, and those who attained a limited education and earned a low income, performed worst on each test. Men who occupied a disadvantaged socioeconomic position in childhood and then experienced upward mobility over the lifecourse exhibited better cognitive performance than those with similar socioeconomic origins but limited or no upward mobility. Conversely, men from advantaged childhood backgrounds who later in life experienced downward mobility scored poorer on each cognitive test than their counterparts who remained in the most advantaged groups throughout the lifecourse. There was a strong, graded association between cumulative socioeconomic disadvantage and cognitive function: Men who occupied a low socioeconomic position during both childhood and adulthood scored worse on every test than those who occupied a high position at all points in their lives. DISCUSSION: Socioeconomic conditions across all stages of the lifecourse appear to make unique contributions to cognitive function in late middle age. These results also suggest that in terms of cognitive function, origin is not necessarily destiny, as disadvantaged socioeconomic circumstances in childhood may be overcome to some extent by upward mobility later in life.

Aged↗

Normative data for eight neuropsychological tests based on a Danish sample.

Normative neuropsychological data have been provided using a sample of 101 persons aged 20 to 54 years. Eighty-seven of the subjects were recruited among patients who had undergone minor surgery, and 14 subjects were volunteers from the staff at the hospital laundry. The measures consisted of seven subjects from the WAIS-R, the trail-making test, symbol digit modalities test, auditory-verbal learning test, story recall test, visual gestalt test, recurring figures test, verbal fluency, and Purdue pegboard test. These measures were selected because of suitability in regard to time taken for testing each subject and their sensitivity to subtle changes in neuropsychological functioning. The sample was arbitrarily divided into three age groups, and for each of the three samples, mean, standard deviation, and range were calculated for each test. The results of the Information and Vocabulary subtests from the WAIS-R, education, and social status were applied as independent variables in linear regression analyses where each of the neuropsychological tests, in turn, was the dependent variable. For the oldest age group, age in addition was used as an independent variable. Significant linear relationships, which accounted for an optimal part of the variance, were selected for clinical application.

Adult↗

The Group Embedded Figures Test: a measure of cognitive style or cognitive impairment.

The Group Embedded Figures Test (GEFT) purports to be a measure of field articulation. The extent to which the GEFT measures apsects of personality and cognitive impairment was explored. Eighty-one male alcoholics, mean age of 42.9, receiving treatment for alcoholism at the Seattle VA Medical Center were administered the GEFT, Shipley Hartford Institute of Living Scale, the Trail Making Test (TMT), and the Clinical Analysis Questionnaire (CAQ). Multiple regression analysis indicates that Part B of the TMT and the residual abstraction score from the Shipley share 32% of the common variance with GEFT. The CAQ second-order factors of depression and independence also contributed significantly to the regression equation accounting for an additional 10% of the common variance. The results suggest the GEFT may be more a measure of cognitive impairment than personality. Alternative explanations are explored.

Adult↗

A discriminant analysis of neuropsychological effect of low lead exposure.

The purpose of this study is to determine the contribution of psychological tests in discriminating neuropsychological effects of low lead exposure. The sample consists of 49 workers occupationally exposed to lead and a control group of 36 non-exposed workers. Their performance on various neuropsychological measures was subject to a discriminant analysis using the SPSS DISCRIMINANT subprogramme. The results indicate that simple reaction time, Digit Symbol (WAIS) and Trail-Making Test (Part A) provide the best combination of tests for the detection of neurotoxic effect of low lead exposure.

Adult↗

Neuropsychological findings in diabetes mellitus.

Compared two groups of Type I diabetic Ss, visually impaired and nonvisually impaired (N = 39), to a non-neurologic chronically ill group and a healthy group (N = 44) on the Halstead-Reitan Neuropsychological Test Battery and the Wechsler Adult Intelligence Scale. The diabetic groups performed like each other and worse than the other two groups on somatosensory examination, motor strength and motor speed tasks. Impairment was more consistent and pronounced among male diabetics than among female diabetics. The non-visually-impaired diabetic group performed worse than the other two groups on Trail Making Tests and Performance IQ. Diabetics performed like the chronic illness group and worse than the healthy group on Category Test. In diabetics, impaired neuropsychological performance tended to be associated with severity of disease and number of severe hypoglycemic episodes. Diabetics demonstrate neuropsychological impairment on tasks that require visual and motor efficiency, and somatosensory discrimination. Cognitive skills and memory remain intact among most diabetics despite greater risks among diabetics for electrolyte imbalance, neurotransmitter deficiencies, and coma.

Adolescent↗

Effects of intraoperative hypothermia on neuropsychological outcomes after intracranial aneurysm surgery.

OBJECTIVE: Subarachnoid hemorrhage and surgical obliteration of ruptured intracranial aneurysms are frequently associated with neurological and neuropsychological abnormalities. We reported that intraoperative cooling did not improve neurological outcome in good-grade surgical subarachnoid hemorrhage patients, as assessed by the Glasgow Outcome Scale score or other neurological and functional measures (National Institutes of Health Stroke Scale, Rankin Disability Scale, Barthel Activities of Daily Living). We now report the results of neuropsychological testing in these patients. METHODS: A total of 1,001 patients who bled < or = 14 days before surgery were randomly assigned to intraoperative hypothermia (t = 33 degrees C) or normothermia (37 degrees C). Outcome was assessed approximately 3 months after surgery. Patients underwent the Benton Visual Retention, Controlled Oral Word Association, Rey-Osterrieth Complex Figure, Grooved Pegboard, and the Trail Making tests. T-scores for each test were calculated from normative data. T-scores were averaged to calculate a Composite Score. A test result (or the Composite Score) was considered "impaired" if the T-score was two or more standard deviations below the norm. A Mini-Mental State Examination was also performed. RESULTS: Neurological outcome data were available in 1,000 patients. Sixty-one patients died. Of the 939 survivors, 873 completed 3 or more tests (exclusive of the Mini-Mental State Examination). Patients with poor neurological outcomes were less likely to complete testing; only 3.9% of Good Outcome (Glasgow Outcome Scale score = 1) patients were untested, compared with 38.6% of patients with Glasgow Outcome Scale scores of 3 and 4. There were no prerandomization demographic differences between the two treatment groups. For hypothermic patients, 16.8% were impaired from their Composite Score versus 20.0% of patients in the normothermic group (p = 0.317). For patients in the hypothermic group, 54.5% were impaired on at least one test, compared with 55.5% of patients in the normothermic group (p = 0.865). Similar results were seen in patients with baseline WFNS scores = I. Mini-Mental State Examination scores in the hypothermic and normothermic groups were 27.4 +/- 3.8 and 26.8 +/- 4.5, respectively. INTERPRETATION: This is the largest prospective evaluation of neuropsychological function after subarachnoid hemorrhage to date. Testing was completed in a high fraction of patients, demonstrating the feasibility of such testing in a large trial. However, the frequent inability to complete testing in poor-outcome patients suggests that testing may be best used to refine outcome assessments in good-grade patients. Many patients showed impairment on at least one test, with global impairment present in 17 to 20% of patients (18-21% of survivors). This was true even among the patients with the best preoperative condition (WFNS = 1). There was no difference in the incidence of impairment between hypothermic and normothermic groups.

Aged↗

Analog validation of German-language symptom validity tests and the influence of coaching.

Although symptom validity testing is an integral part of the repertory of neuropsychologists in a number of countries, this is not yet true for Germany. The German adaptations of two effort tests, the Medical Symptom Validity Test (MSVT) by Green and the Amsterdam Short-Term Memory Test (ASTM) by Schmand et al., were investigated with a German-language sample. An analog study was performed with 18 healthy experimental malingerers and 18 controls with a mean age of 25.4 years. The scenario contained detailed information about mild post-traumatic cognitive impairment, as well as an explicit warning against symptom exaggeration. In addition to MSVT and ASTM, the Trail Making Test (TMT), the Complex Figure Test (CFT), and Digit Span were performed. Half of the sample were also given Rey's 15-Item-Test (FIT). Both groups were significantly different in all effort and performance measures, with the exception of the ratio TMT-B:TMT-A. With MSVT and ASTM, correct classification of group membership was between 97 and 100%. For the ratio TMT-B:TMT-A, there was a considerable overlap in the test scores for the two groups and the sensitivity of the FIT was too low. Although the ASTM and the MSVT were identified by a number of subjects as possible effort measures, both tests obtained very good results within this analog design.

Adult↗

Influence of education on the relationship between white matter lesions and cognition.

OBJECTIVE: To test the hypothesis that education level modulates the effects of cerebral white matter hyperintensities (WMH) on cognition in a large population-based study. METHODS: A total of 845 elderly subjects aged 64 to 76 years who enrolled in a longitudinal study on cognitive decline and vascular aging had an MRI examination. Cognitive functions were assessed by Mini-Mental State Examination, Trail Making Test Part B, Digit Symbol Substitution Test of the Wechsler Adult Intelligence Scale-Revised, Finger Tapping Test, Word Fluency Test, and Raven Progressive Matrix. MRI scans were interpreted visually using a standardized scale for rating WMH. RESULTS: Severe WMH were present in 17% of the participants who had lower performances on tests involving attention tasks. In participants with a lower level of education, presence of severe WMH was significantly associated with lower cognitive performances. This was found for all cognitive tests. Conversely, in participants with a high level of education, there was no significant association between severity of WMH and level of cognitive functions. CONCLUSION: Education modulates the consequences of WMH on cognition. Participants with a high level of education were protected against the cognitive deterioration related to vascular insults of the brain.

Aged↗

Neuropsychological correlates of urine toxicology results.

1. The present study evaluated neuropsychological differences among 4 groups of men and women, aged 15 to 61 years. The groups were defined on the basis of urine toxicology screens indicating recent cocaine (n = 12), cannabis (n = 14), or multiple drug (n = 7) use, or no such use (n = 21). 2. The Wechsler Adult Intelligence Scale-Revised (WAIS-R), the Trail Making Tests, and the Porteus Maze Test were administered to all subjects. 3. Analyses revealed no significant differences between the groups in age, gender composition, or in the proportion of group members with personal histories of alcohol/drug abuse or dependence, or Anti-Social Personality Disorder. 4. The cocaine positive group exhibited statistically significant impairments in Verbal IQ, as well as on Information, Vocabulary, Comprehension, Picture Completion, and Trails B subtests. The other experimental groups did not differ from the urine negative group.

Adolescent↗

Side effects from increased doses of carbamazepine on neuropsychological and posturographic parameters of humans.

Patients taking anticonvulsant drugs display a broad spectrum of side-effects. Particularly, in the beginning of treatment and with increasing doses of carbamazepine, side effects such as dizziness, ataxia, drowsiness and reduction of alertness occur, which improve some days after the dose has reached a stable level. Our aim was to find objective parameters for grading these side effects and to differentiate between neurophysiological and neuropsychological side effects of carbamazepine in a clinical situation. Twenty-two patients with trigeminal neuralgia were included for a follow-up study with increasing carbamazepine doses (0 mg to 600 mg). The effect of carbamazepine on postural stability was quantified by posturography. Different neuropsychological tests to study cognitive effects of carbamazepine were performed. The composite equilibrium score showed a significant reduction of postural stability with increasing doses of carbamazepine. In sensory analysis the somatosensory ratio was significantly influenced by increased doses of carbamazepine during the study. Mean reaction time of tonic alertness and physical alertness varied significantly with different doses of carbamazepine. There was a significant influence in patients attention during trail making tests and divided attention tests with increase in carbamazepine. In conclusion our observations show that the rate of change of carbamazepine doses is an important determinant of cognitive and motor functions in the phase of increasing doses.

Adult↗

Relationship of the model for end-stage liver disease (MELD) scale to hepatic encephalopathy, as defined by electroencephalography and neuropsychometric testing, and ascites.

OBJECTIVE: It has recently been suggested that the Model for End-Stage Liver Disease (MELD) is a better and a more objective predictor of mortality in patients with end-stage liver disease. The aim of our study was to determine the relationship of the MELD score to hepatic encephalopathy (HE), as determined by electroencephalography (EEG) and clinical and neuropsychometric examination, and ascites. METHODS: A total of 66 patients underwent EEG, a neuropsychometric screening by Mini-Mental State Examination, Trails Making Tests, Rey-Osterreith Complex Figure, and Hopkins Verbal Learning Tests, and a clinical assessment for HE. The MELD score was calculated as previously described by using serum creatinine, bilirubin, and international normalized ratio. Subclinical HE was diagnosed if clinical examination did not detect HE but neuropsychometric tests and EEG were abnormal. RESULTS: Sixteen patients had no HE, 28 had subclinical HE, and 22 had clinical HE. Age, sex, race, and cause of liver disease were similar in all three groups. Child-Turcotte-Pugh score was significantly higher in patients with clinical HE compared with the other two groups. There was only a modest correlation (r = 0.5) between Child-Turcotte-Pugh and the MELD scores. The distribution and mean MELD scores were similar in patients with or without HE as determined by clinical or neuropsychometric examination and EEG. Approximately 90% of patients with clinical HE or abnormal EEG and neuropsychometric tests had a MELD score less than 25. Similarly, the MELD score was not affected by the severity of ascites. CONCLUSION: The MELD score does not correlate well with severity of HE or ascites. Patients with HE and ascites might not receive liver transplantation in a timely manner if MELD scores were to be used exclusively for organ allocation.

Adult↗

Evidence for cerebellar-frontal subsystem changes in children treated with intrathecal chemotherapy for leukemia: enhanced data analysis using an effect size model.

BACKGROUND: Following brain insult in early childhood, the later maturing neocerebellum and frontal lobes frequently show abnormalities. OBJECTIVE: To investigate the morphologic characteristics and function of a proposed cerebellar-frontal subsystem in children treated for acute lymphoblastic leukemia (ALL) with intrathecal methotrexate using quantitative magnetic resonance imaging, neuropsychological measures, nonlinear multiple regression analysis, and a statistical effect size model that augments interpretive validity of nonsignificant statistical findings, particularly from small sample size studies. DESIGN: Comparison and relationship of magnetic resonance imaging morphometry of cerebellar lobuli I-V and VI-VII and prefrontal cortices, and performance on 5 neuropsychological tests assessing visual-spatial attention, short-term memory, and visuomotor organization and coordination between childhood survivors of ALL and a matched control group. PARTICIPANTS: Ten childhood survivors of ALL treated between 1982 and 1989 with standard 3-year intrathecal chemotherapy, and matched control subjects. MAIN OUTCOME MEASURES: Morphometric results of cerebellar lobuli I-V and VI-VII and prefrontal cortices, and results of Trail-Making Tests, Rey-Osterreith Complex Figure Test, WISC-III Coding. RESULTS: Significant effect size model values for outcome measures in the ALL group support deficits in lobuli VI-VII and prefrontal cortices, and neuropsychological performance. Multiple regression analysis results were consistent with hypothesized involvement of a cerebellar-frontal brain subsystem. CONCLUSION: Treatment of children with ALL with intrathecal methotrexate before 5 years of age has structural and functional effects on the developing neocerebellar-frontal subsystem.

Adolescent↗

Cognitive test performance and crash risk in an older driver population.

This paper reports on the usefulness of five brief tests of cognitive function for identifying older drivers who may be at increased risk of crash involvement; it also examines the broader issue of whether impaired cognitive function is associated with increased crash risk in the older driver population. Data for the study were collected from 3238 drivers aged 65 and older applying for renewal of their North Carolina driver's license. The specific cognitive assessments examined include the Trail Making Test parts A and B, the Short Blessed Orientation-Memory-Concentration test of cognitive impairment, a modification of the American Association of Retired Persons 'Reaction Time' test, and a timed Traffic Sign Recognition test. Information on crash involvements during the 3-year period prior to testing was obtained by linkage with the North Carolina driver history file. Although the individual tests were not found to be particularly effective screening tools for identifying subsets of high risk drivers, cognitive test performance remained significantly associated with crash risk even after controlling for driver age, race and measures of driving exposure. Drivers who scored in the lowest 10% on the cognitive tests were approx. 1.5 times more likely to be in crashes than were drivers who scored in the highest 10%. Implications for the counseling and licensing of older drivers are discussed, along with recommendations for future research.

Accidents, Traffic↗

One-year treatment of Alzheimer's disease with acetylcholinesterase inhibitors: improvement on ADAS-cog and TMT A, no change or worsening on other tests.

The aim of this study was to assess cognitive functioning measured by selected psychometric and neuropsychological tools in patients with Alzheimer's disease (AD) after 1-year treatment with acetylcholinesterase inhibitors. Seventy-six patients (22 male and 54 female) with a mild to moderate stage of AD, aged 56-86 (mean 68) years, were treated. Forty-seven received donepezil (mean dose 9.3 mg/d) and 29 rivastigmine (mean dose 8.5 mg/d). Cognitive measurements included: the mini mental state examination (MMSE), the Alzheimer disease assessment scale-cognitive (ADAS- cog), the trail making test (TMT) and the Stroop color word interference test. The assessments were made before and after 3, 6 and 12 months of treatment. A significant improvement in ADAS-cog (p < 0.001, 83% of patients improved) and a worsening in MMSE (84% of patients worsened, p < 0.01 after 6 and 12 months) was noted after the 1 year treatment. A majority of patients (57%) improved in the TMT-A (p < 0.001), measuring psychomotor speed and worsened in the TMT-B (p < 0.01, after 12 months), and Stroop B test (p < 0.001), measuring working memory and executive functions, 53% and 61%, respectively. Most patients (83%) did not change their performance in the Stroop A (improvement after 3 months, p < 0.001, worsening after 6 and 12 months p < 0.01) test measuring verbal abilities, after 1 year treatment. The results obtained suggest that the treatment with cholinergic drugs may improve global cognitive functioning (ADAS-cog) and psychomotor speed (TMT A), however, such treatment is unable to prevent the deterioration of working memory and executive functions.

Aged↗

Assessment practices of clinical neuropsychologists in the United States and Canada: a survey of INS, NAN, and APA Division 40 members.

The present study surveyed assessment practices and test usage patterns among clinical neuropsychologists. Respondents were 747 North American, doctorate-level psychologists (40% usable response rate) affiliated with Division 40 of the American Psychological Association (APA), the National Academy of Neuropsychology (NAN), or the International Neuropsychological Society (INS). Respondents first provided basic demographic and practice-related information and reported their most frequently utilized instruments. Overall, the Wechsler Adult Intelligence Scales and Wechsler Memory Scales were most frequently used, followed by the Trail Making Test, California Verbal Learning Test, and Wechsler Intelligence Scale for Children. Respondents also reviewed a vignette about a traumatic brain injury patient, and then reported the instruments they would use to assess this patient's specific cognitive symptomatology, general cognitive ability, and capacity to return to work. Particular attention was paid to the areas of memory, attention, and executive functioning. The current study represents the largest and most comprehensive test usage survey conducted to date within the field of clinical neuropsychology. Survey results update and greatly expand knowledge about neuropsychologists' assessment practices. Following a review of findings, results are compared to those obtained in prior surveys and implications for the field of neuropsychology are discussed.

Adult↗

Some objective measurements of frontal lobe deficits following traumatic brain injury.

The current study attempted to determine: 1) If frontal lobe TBI produces specific long-term cognitive deficits that are measurable on objective testing; and 2) Which tests are most appropriate for assessing frontal deficits. The study involved 41 patients: 10 sustaining TBI with frontal lesions on CT, 11 sustaining TBI without frontal lesions, and 20 controls. TBI subjects were included only if they were evaluated as outpatients to ensure that their cognitive deficits were stable, and not due to acute injury. The results suggest that: 1) Frontal lobe TBI produces a specific profile of cognitive deficits (characterized as inflexibility), with relative deficits on the Trail Making Test Part B and Rey AVLT that 6 (not trials 1-5), but generally intact performance on other cognitive measures: and 2) Tests useful in evaluating global cognitive dysfunction (i e, Rey AVLT) may need to be used differently for the specific evaluation of frontal lobe dysfunction.

Journal Article↗

Well-being, cerebral function, and physical fatigue after nocturnal hypoglycemia in IDDM.

OBJECTIVE: This study assessed the effect of nocturnal hypoglycemia on well-being cerebral function, and physical fatigue the next day in 10 subjects with IDDM. RESEARCH DESIGN AND METHODS: After an exercise test to determine work-loads corresponding to 30 and 60% VO2max, volunteers were studied twice, 4 weeks apart. Blood glucose was lowered one night to 2.3-2.7 mmol/l for 1 h, and at the control visit, hypoglycemia was avoided. The next morning, well-being was assessed using the minor symptom evaluation profile (MSEP), and cerebral function was assessed with the paced auditory serial addition test, the digit symbol substitution test, trail making part B, four-choice reaction time, and auditory P300 latency. Subjects then exercised at predetermined workloads corresponding to 30% VO2max for 30 min and 60% VO2max until exhaustion. Fatigue was assessed every 10 min using the Borg scale for rating of perceived exertion. RESULTS: All three components of the MSEP scored higher (indicating more symptoms) after the hypoglycemic night compared with the control night (P < 0.01 contentment, sleep; P < 0.001 vitality). None of the cerebral function tests performed the next day was affected by hypoglycemia. Exercise capacity was similar at both visits, but subjects were more fatigued after the hypoglycemic night (P < 0.01, analysis of variance). There were no differences in potassium, catecholamine, glucose, or lactate concentrations between visits either before or during exercise. CONCLUSIONS: One hour of hypoglycemia at night affects a subject's sense of well-being, but not cerebral function, the next day. The greater fatigue after the hypoglycemic night cannot be explained by the biochemical parameters measured.

Activities of Daily Living↗