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PubMed1995

Alphanumeric sequencing and cognitive impairment among elderly persons.

Alphanumeric Sequencing involves the alternating recitation of counting and the alphabet. We report data on the use of this measure among 112 VA patients ranging in age from 61 to 100 years who were administered the Alphanumeric Sequencing, Trail Making Test, Digits Forward and Backward, the Mini-Mental State Examination, and the Behavioral Dyscontrol Scale. Persons who obtained scores < 27 on the Mini-Mental State Examination or < 14 on the Behavioral Dyscontrol Scale performed significantly more poorly than those who scored higher. Both the time and errors were correlated (.11 to -.49) with measures of information processing and short-term memory.

Aged↗
PubMed1998

A preliminary investigation of lamotrigine for cocaine abuse in HIV-seropositive patients.

Theoretical considerations as well as pre-clinical data suggest a potential role for glutamate-inhibiting agents in the treatment of cocaine addiction. At present, however, there is little clinical data to inform the use of these agents for this application. In this preliminary study eighteen HIV-seropositive cocaine dependent, opiate-agonist maintained patients received lamotrigine (300 mg/day), an indirect glutamate release inhibitor, on either a standard (n = 8) or accelerated (n = 10) induction schedule for 12 weeks. Results showed a significant decrease in percentage of cocaine-positive urine screens in the standard induction lamotrigine group but not in the accelerated induction group. There were fewer reports of side-effects and fewer dropouts in the standard-induction lamotrigine group compared to the accelerated induction group. Neuropsychological assessments suggested a decrement in the Trail Making Tests, but no other decreases in cognitive functioning. We conclude that standard-induction lamotrigine warrants further investigation for the treatment of cocaine abuse in this patient population.

Adult↗
PubMed2000

[Cognitive enhancement effect of piracetam in patients with mild cognitive impairment and dementia].

Effectiveness and tolerability of two piracetam-containing drugs were compared in the frame of an open, multicentre, Phase-IV, prospective study with group and self control carried out in 9 Hungarian centres in 1998. Patients with cognitive decline from Alzheimer's disease and/or cerebrovascular origin have received the drug, in the first 4 weeks in 4800, later 2400 mg daily doses. One hundred four patients finished the study. No relevant difference with statistically significant degree was registered between the two groups. Based on this fact in this study data of the 104 patients were examined together. Authors examined two problems. The first: on which cognitive function is more effective the drug. Five factors of the modified Mini-Mental State Examination were separated and compared. Nearly all of them significantly increased especially the factors of memory, and concentration-psychomotor speed. The second examined field: are there certain subgroups with prognostic value about the effectiveness of piracetam treatment. Neither the duration of the illness, nor etiologic diagnosis, severity of cognitive decline, or former treatment with piracetam did influence significantly the efficacy. In case of depressive symptoms such connection was established: the more pronounced the severity of these symptoms the higher improvement can be expected in cognitive functions. This was also stressed by the logistic regression analysis. Authors described an original evaluation method of the trail-making test, which could widen the application of this popular test in psychopharmacologic studies. Final conclusions: the cognitive enhancer effect of piracetam appeared in a few weeks. This treatment could be effective even in Alzheimer's disease, in case of more pronounced cognitive decline, longer duration of the illness, and in case of former piracetam treatment as well. The degree of cognitive improvement was most pronounced in patients with comorbid depressive symptoms.

Aged↗
PubMedDate not supplied

[Neurocognitive subtypes of schizophrenia according to performance at verbal fluency tasks].

UNLABELLED: There is a general agreement that schizophrenia is an heterogeneous disorder and cognitive performances could be an interesting feature in order to allow a better description of specific subtypes. The aim of this study was: 1) to describe clinical and neuropsychological performances of 45 DSM IV schizophrenic patients divided in two groups according to their performances in verbal fluency task; 2) to compare each group with the performances of healthy subjects matched for sex, age and education. METHOD: The differentiation criteria was the total number of words generated during 3 formal and 3 semantic fluency tasks. Data were analysed using a disjoint clustering procedure with Euclidean distance. A two cluster solution was considered optimal. Cluster S1 includes 21 schizophrenic subjects defined as low performer (range: 40-83, mean 66.7). Cluster S2 includes 24 schizophrenic subjects (range: 87-158, mean 102.8). All schizophrenic patients were clinically evaluated with SANS, SAPS and a psychosocial aptitude rating scale (PARS). Patients and controls were assessed with the following battery: verbal fluency, Trail making test A & B, Stroop test, Brown Peterson paradigm for evaluation of working memory. RESULTS: Patients with low verbal fluency had significantly higher scores at the SANS and PARS. Furthermore, the low performers (cluster S1) were differentiated from those with better performances (cluster S2) by significantly poorer results in all neuropsychological tests. Comparison with healthy subjects indicated that cluster S1 patients also had significantly poorer results in all neuropsychological tests. Relative to their 24 controls cluster S2 patients performances was lower in all measures excepted in one subscore of the Stroop test and in the number of cluster produced. This later result could indicate that some capacities for willed intention were preserved in this group and that the alteration in verbal fluency performances were better explained by impairment of the other cognitive processes. DISCUSSION: These findings point out that: 1) use of performance in cognitive executive task such as verbal fluency is a possible criteria in order to separate different types of schizophrenic patients; 2) in the two groups of schizophrenic subjects, various processes defects underline cognitive performances indicating the presence of different neurobiological dysfunctioning.

Adult↗
PubMed2001

Psychometric properties of the driVR: a virtual reality driving assessment.

This study provides data on the psychometric properties of the driVR, a virtual reality assessment used to assess driving in persons with brain injury. Several driVR measures were compared to other established indicators of driving performance. Many concurrent validity coefficients over r = 0.3 were identified between driVR measures of lane tracking with on-road, Trail Making Test, and the Driver Performance Test II scores. The results provide further evidence to support the concurrent validity of the driVR. Continued research addressing other aspects of validity and reliability is recommended.

Adult↗
PubMed1993

Effects of repeated neuropsychological assessments.

The effects of repeated administrations of neuropsychological instruments were evaluated in a group of chronic cigarette smokers who served as control subjects in a larger research project. Subjects performance on 13 neuropsychological variables across four assessments was evaluated using trend analyses. Statistically significant results were obtained on the Logical and Figurai Memory Subtests of the Wechsler Memory Scale (Form I-Russell's Revision) Part B of the Trail Making Test and the Grooved Pegboard Test (preferred hand). Of the remaining seven variables the Speech Sounds Perception Test, the Seashore Rhythm Test and Simple Auditory Reaction Time were highly consistent across all four assessments. The implications of these findings in clinical practice and research settings are addressed.

Journal Article↗
PubMed1984

Neuropsychologic deficits associated with primary hyperparathyroidism.

Although neuropsychologic dysfunction has been recognized as a symptom of primary hyperparathyroidism since the earliest descriptions of the disease, the nature of the memory, learning, and cognition deficits has been poorly defined. To assess the nature and extent of the deficits, 10 patients with hyperparathyroidism without specific neuropsychologic complaints and 10 normocalcemic patients were tested with a battery of psychologic tests before and after operation. Postoperative test scores for the Wechsler Logical Memory and Associate Learning, Wechsler Memory Digit Span, and the Similarities subtest of the Wechsler Adult Intelligence Scales, which test short-term verbal memory and cognition, showed statistically significant improvement for the patients with hyperparathyroidism. The patients with hyperparathyroidism improved on the Wechsler Memory Quotient an average of 17%. Tests measuring conceptual tracking, short-term visual memory, graphic skills, and fine motor coordination were unchanged. The results suggest that dominant hemispheric functions are disrupted by hyperparathyroidism. Improved neuropsychologic function can be expected after parathyroidectomy and, since the deficit is difficult to assess before operation, may be an indication for operation in the patient without symptoms.

Cognition↗
PubMedDate not supplied

Psychometric studies and clinical interviews with cochlear implant patients.

Selection of suitable candidates for an implant was a central issue in planning clinical trials. Psychological techniques were included, the purpose being to screen out individuals who, on an a priori basis, we considered cognitively and/or emotionally inappropriate. Psychological measures were further used to assess the effect of the implant on those candidates who did undergo the surgical procedure. The present paper describes the preimplant and postimplant interviews and psychometric assessment. Based on the data developed from the interviews, we concluded that the recipients of implants are in almost unanimous agreement that the implant is a very positive contribution to their lives. Tests of cognitive functioning conducted over time indicate that the implant does not impair cognitive or neuropsychological functions. Personality tests were also administered, and no significant changes in these dimensions were found.

Adult↗
PubMed1997

Cognitive function 5 years after randomization to coronary angioplasty or coronary artery bypass graft surgery.

BACKGROUND: Coronary bypass surgery often leads to short-term cognitive dysfunction, whereas coronary angioplasty does not. Perioperative cognitive dysfunction usually resolves, although a subgroup of surgical patients may continue to exhibit long-term cognitive dysfunction. The purpose of this study was to compare cognitive function 5 years after randomization to a strategy of either initial coronary surgery or initial angioplasty. METHODS AND RESULTS: Five centers in the Bypass Angioplasty Revascularization Investigation participated in this ancillary study. Patients with multivessel coronary disease randomized to angioplasty or surgery were eligible at the time of their 5-year clinic visit. A battery of five measures previously shown to be sensitive to perioperative changes in cognitive function was administered, including the Logical and Figural Memory Scales from the Wechsler Memory Scale, the Digit Symbol and Digit Span subtests from the Wechsler Adult Intelligence Scale, and Part B of the Reitan Trail Making Test. The 125 study patients were generally similar to the 133 patients who were eligible but did not participate, although study participants were significantly younger (P=.003). The 64 patients randomly assigned to angioplasty had baseline characteristics similar to those of 61 patients randomly assigned to surgery. Cognitive function scores were not significantly different between angioplasty or surgery patients in an intention-to-treat analysis (P=.57). There also was no difference in cognitive function scores when the data were analyzed according to whether the patient had ever undergone bypass surgery (P=.59). CONCLUSIONS: Long-term cognitive function is similar after coronary bypass surgery and coronary angioplasty in the majority of patients.

Adult↗
PubMed1998

Predicting ability to drive after stroke.

OBJECTIVE: To determine the ability of perceptual testing to predict on-road driving outcome in subjects with stroke. STUDY DESIGN: Historical cohort study of 84 individuals with stroke who completed both the perceptual testing and the on-road driving evaluation conducted in a driving evaluation service. MEASURES: Perceptual tests, such as the Motor Free Visual Perception Test (MVPT) and Trail Making B test, and an on-road driving evaluation. Based on driving behaviors, a pass or fail outcome was determined by the examiners. RESULTS: Subjects who passed the on-road evaluation had better average scores on the majority of perceptual tests compared with those who failed. The MVPT was the most predictive of on-road performance (positive predictive value=86.1%; negative predictive value=58.3%). The combination of tests resulting in the most predictive and parsimonious model was the MVPT plus Trail Making B, such that those who scored poorly on both were 22 times more likely to fail the on-road evaluation. CONCLUSION: A screening process is useful in identifying persons who are not ready to undergo an on-road driving evaluation.

Adult↗
PubMed2005

Diagnosis of hypertension and high blood pressure levels negatively affect cognitive function in older adults.

BACKGROUND: Hypertension is associated with diminished performance on tests of cognitive function. The degree to which those diagnosed with hypertension have controlled blood pressure (BP) levels may be a critical determinant of cognitive outcomes. Persons with hypertension and poorly controlled BP are likely to display the worst performance on cognitive tests. PURPOSE: The purpose is to examine potential interactive relations of hypertension diagnostic status and current BP levels to cognitive function. METHODS: Participants were 101 healthy older adults (ages 53-84, 62% male, 90% White, 29% diagnosed with hypertension) who engaged in biomedical and neuropsychological assessment. RESULTS: After statistical adjustment for age and education, persons with high BP performed more poorly than those with normal BP on the Visual Reproductions-Immediate and Delayed Recall and the Grooved Pegboard tests. Diagnosed hypertension was related to poorer performance on the Grooved Pegboard tests. An interaction of diagnosed hypertension and BP level revealed that those diagnosed with hypertension and also having poorly controlled BP levels performed least well on the Grooved Pegboard tests and the Trail Making Test-Part A. CONCLUSION: Irrespective of prior diagnostic status, individuals with high BP displayed compromised performance on tests of nonverbal memory, motor speed, and manual dexterity. However, as compared to the other groups, those diagnosed with hypertension and also having poorly controlled BP elevation were most vulnerable to difficulties on tests of perceptuo-motor speed, motor speed, and manual dexterity. These findings suggest the need for increased attention to preventative efforts with respect to BP assessment and control in older adults to help preserve cognitive function.

Aged↗
PubMed1989

[Parkinson disease and cognitive evoked potentials].

Long latency auditory evoked potentials were recorded in 50 patients with Parkinson's disease, some case were also investigated by the Rapid Evaluation of Cognitive Functions test (RECF) and Trail Making A test (TMA). Latencies of P2, N2 and P300 waves were longer in the parkinsonian group than in a control group matched for age. Latencies of N2 and P300 waves were correlated significantly with scores for RECF and TMA presumed to be sensitive to organic brain lesions. On the other hand no significant correlation was found between RECF and P1 and P2 latencies. In addition, correlation was lacking between Verbal Automatism test scores, presumed to be resistant to organic brain lesions, and P300 wave latencies. Cognitive evoked potential (CEP) latency increases with age in normal subjects. In the parkinsonian group the coefficient of correlation between these two factors was lower but still significant. The parkinsonian patients with dementia as defined by DSM III criteria, or an RECF score of less than 46, showed longer N2 and P300 latencies but no significant difference in N1 and P2 latencies. In contrast, comparison of P300 and N2 wave latencies in depressed and non-depressed parkinsonian patients failed to show any significant difference. The bilateral akinetic forms had marked lengthening of P300 wave latencies and a lower TMA score. Neither the duration of the disease, type of treatment, duration of L-Dopa therapy significantly influenced the latency of cognitive event-related potentials.

Age Factors↗
PubMed1997

[Amyotrophic lateral sclerosis and cognition disorders. Neuropsychological study of a population of 26 patients].

Typical amyotrophic lateral sclerosis (ALS) is described as a motoneuron disease which spared cognitive functions. Recent studies reported cognitive impairement associated with classical ALS. Gallasi and al. (1985) detect subtle cognitive impairement sparing memory in a population of 22 patients affected with sporadic motoneuron disease. Iwasaki and al. (1990) finds lower scores, including memory tests. Our study evaluated 26 patients compared with 26 control subjects with neurospychological tests (rapid evaluation of cognitive function fluency, Weschler adult intelligence scale, Wisconsin cards, Rey scheme, memory tests - Luria -, trail making, visual retentional test of Benton Violon Seyll test). All the neuropsychological tests were significantly lower for the patients group. The cognitive impairement is global: memory and frontal functions were not spared and this impairement is also subtle. It may easily go undetected without tests. We cannot isolate a cortical or subcortical profile of the deterioration.

Aged↗
PubMed2000

Trail making and cognitive set-shifting.

We tested the hypothesis that Part B of the Trail Making Test (TMT) is a measure of cognitive set-shifting ability in 55 normal subjects with the conventional (written) TMT and a verbal adaptation, the "verbal TMT" (vTMT). The finding of a significant association between Parts B of TMT and vTMT (r = 0,59, p < 0,001), after correcting for age and education, supports the view that Part B of TMT is a valid measure of the ability to alternate between cognitive categories.

Adolescent↗