Intellectual Impairment in Parkinson's Disease: Clinical, Pathologic, and Biochemical Correlates

“Mini-mental state”

1975 • 82,784 citations

Parkinsonism

1967 • 11,463 citations

Alzheimer disease: Evidence for selective loss of cholinergic neurons in the nucleus basalis

1981 • 1,701 citations

An Essay on the Shaking Palsy

2002 • 1,658 citations

Chronic parkinsonism secondary to intravenous injection of meperidine analogues

1979 • 1,356 citations

FRONTAL LOBE DYSFUNCTION IN PARKINSON'S DISEASE

1986 • 904 citations

The `subcortical dementia' of progressive supranuclear palsy

1974 • 872 citations

Dementia: A Clinical Approach

1992 • 870 citations

COGNITIVE DEFICITS IN THE EARLY STAGES OF PARKINSON'S DISEASE

1983 • 807 citations

Reduction of cortical dopamine, noradrenaline, serotonin and their metabolites in Parkinson's disease

1983 • 712 citations

Cholinergic correlates of cognitive impairment in Parkinson's disease: comparisons with Alzheimer's disease.

1985 • 570 citations

Subcortical Dementia

1984 • 556 citations

Basal forebrain neurons in the dementia of Parkinson disease

1983 • 526 citations

THE BRAIN-STEM LESIONS IN PARKINSONISM

1953 • 485 citations

Parkinson disease, dementia, and alzheimer disease: Clinicopathological correlations

1980 • 454 citations

Pathological changes in the nucleus of meynert in Alzheimer's and Parkinson's diseases

1983 • 447 citations

Screening for Organic Mental Syndromes in the Medically III

1977 • 426 citations

Is the mesocortical dopaminergic system involved in Parkinson disease?

1980 • 412 citations

The effect of Parkinson's disease on the ability to maintain a mental set.

1985 • 396 citations

Dementia in Parkinson disease

1979 • 384 citations

Cognitive and motor shifting aptitude disorder in Parkinson's disease.

1984 • 376 citations

Confrontation naming impairment in dementia

1983 • 374 citations

Alzheimer's disease : senile dementia and related disorders

1978 • 369 citations

The heterogeneity of Parkinson's disease

1985 • 361 citations

Dementia in Parkinson disease

1979 • 341 citations

Analysis of the clinical problems in parkinsonism and the complications of long‐term levodopa therapy

1979 • 319 citations

Subcortical Dementia Neuropsychology, Neuropsychiatry, and Pathophysiology

1986 • 306 citations

Heterogeneity of cognitive impairment in progressive supranuclear palsy, Parkinson's disease, and Alzheimer's disease

1986 • 296 citations

THE DISTRIBUTION OF LEWY BODIES IN THE CENTRAL AND AUTONOMIC NERVOUS SYSTEMS IN IDIOPATHIC PARALYSIS AGITANS

1960 • 291 citations

Visuospatial Impairment in Parkinson's Disease

1984 • 290 citations

Dementia in idiopathic Parkinson's disease

1984 • 276 citations

Relationship of motor symptoms to intellectual deficits in Parkinson disease

1982 • 270 citations

Parkinson's disease: Neuron loss in the nucleus basalis without concomitant Alzheimer's disease

1984 • 254 citations

Psychiatric symptoms in Parkinsonism.

1970 • 246 citations

Dementia in Parkinson disease: A neuropsychological analysis

1982 • 245 citations

Psychiatric disturbances in Parkinson's disease.

1972 • 240 citations

Parkinsonism

1975 • 219 citations

Monoamines in the human neostriatum: Topographic distribution in normals and in Parkinson's disease and their role in akinesia, rigidity, chorea, and tremor

1971 • 218 citations

[3H]spiperone binding, dopamine and HVA concentrations in Parkinson's disease and supranuclear palsy

1984 • 215 citations

Dopaminergic and cholinergic lesions in progressive supranuclear palsy

1985 • 213 citations

DEMENTIA IN PARKINSON'S DISEASE

1976 • 196 citations

Parkinson's disease and dementia

1987 • 194 citations

The nucleus basalis of Meynert in neurological disease: A quantitative morphological study

1985 • 191 citations

Perceptual motor dysfunction in Parkinson's disease: a deficit in sequential and predictive voluntary movement.

1983 • 185 citations

VISUOSPATIAL FUNCTION IN PARKINSON'S DISEASE

1986 • 183 citations

Cognitive impairments in Parkinson's disease: Distinguishing between effort-demanding and automatic cognitive processes

1984 • 183 citations

THE PREVALENCE, NATURAL HISTORY AND DEMENTIA OF PARKINSON'S DISEASE

1966 • 182 citations

Dopamine deficiency in the cerebral cortex in Parkinson disease

1982 • 179 citations

“Tip‐of‐the‐tongue” phenomenon in Parkinson disease

1982 • 179 citations

A subcortico-cortical cholinergic system is affected in Parkinson's disease

1983 • 176 citations

Parkinson's disease: from brain homogenate to treatment.

1973 • 175 citations

Somatostatin and dementia in Parkinson's disease

1983 • 172 citations

PATHOLOGICAL BASIS FOR NEUROTRANSMITTER CHANGES IN PARKINSON'S DISEASE

1983 • 168 citations

The Impact of Treatment with Levodopa on Parkinson's Disease

1980 • 164 citations

Parkinsonism: Alterations in spatial orientation as determined by a route-walking test

1972 • 162 citations

INTELLECTUAL IMPAIRMENT IN PARKINSON'S SYNDROME

1972 • 159 citations

Brain neurotransmitter changes in Parkinson's disease

1981 • 157 citations

Intellectual changes in patients with MPTP‐induced parkinsonism

1985 • 149 citations

High Speed Memory Scanning in Parkinsonism

1980 • 143 citations

Alterations in cognitive performance and affect-arousal state during fluctuations in motor function in Parkinson's disease.

1984 • 142 citations

Pathologic Correlates of Dementia in Parkinson's Disease

1986 • 141 citations

Progressive supranuclear palsy: Relationship between extrapyramidal disturbances, dementia, and brain neurotransmitter markers

1985 • 140 citations

Parkinson's disease

1973 • 139 citations

The pathology of Parkinsonism: a comparison of degenerations in cerebral cortex and brainstem.

1974 • 137 citations

Confusion, dementia and anticholinergics in Parkinson's disease.

1982 • 134 citations

Neurochemistry of Parkinson's disease: relation between striatal and limbic dopamine.

1978 • 130 citations

Cortical vs Subcortical Dementia

1986 • 129 citations

Judgment of visual and postural vertical by parkinsonian patients

1964 • 126 citations

Impairments in the learning and performance of a new manual skill in patients with Parkinson's disease.

1986 • 126 citations

Mental symptoms in Parkinson's disease during chronic treatment with levodopa

1976 • 121 citations

Selective Delayed Response Deficits in Parkinson's and Alzheimer's Disease

1986 • 119 citations

Recognition memory in Parkinson's disease.

1984 • 118 citations

Ernaehrung und konstitution.

1950 • 112 citations

Motor and cognitive performances of parkinsonian patients in the on and off phases of the disease.

1986 • 106 citations

CCK-8-immunoreactivity distribution in human brain: selective decrease in the substantia nigra from parkinsonian patients

1982 • 106 citations

Pathology of Parkinsonism

2000 • 104 citations

Judgment of the visual vertical and horizontal in patients with parkinsonism

1975 • 99 citations

PARKINSON'S DISEASE

1922 • 96 citations

Dementia in Parkinson's Disease

1986 • 94 citations

The effect of semantic relations on the memory deficit associated with parkinson's disease

1982 • 90 citations

Reaction Time and Vigilance in Parkinson's Disease

1984 • 88 citations

Dementia: A Clinical Approach

1984 • 88 citations

Parkinson's Disease

1984 • 85 citations

Visual Neglect in Parkinson's Disease

1983 • 84 citations

Impairment of motor planning in patients with Parkinson's disease: evidence from ideomotor apraxia testing.

1986 • 84 citations

Behavioral alterations in patients with basal ganglia lesions.

1976 • 83 citations

Cortical serotonin-S2 receptor binding abnormalities in patients with Alzheimer's disease: Comparisons with Parkinson's disease

1984 • 80 citations

Effects of levodopa in parkinsonian patients with dementia

1972 • 78 citations

Is there a specific visuo-spatial impairment in Parkinsonians?

1986 • 78 citations

Parkinsonism and Depression

1972 • 77 citations

Learning Deficit in Parkinson's Disease

1987 • 74 citations

Brain-noradrenaline and 3-methoxy-4-hydroxyphenylglycol in Parkinson's syndrome

1977 • 73 citations

The basal nucleus of Meynert in idiopathic Parkinson's disease

2009 • 73 citations

Levodopa Treatment of Parkinson's Syndrome

1972 • 72 citations

A controlled study of dementia in Parkinson's disease.

1982 • 71 citations

Mental deterioration, visuoperceptive disabilities and constructional apraxia in Parkinson's disease

2009 • 69 citations

Alterations in regional brain concentrations of neurotensin and bombesin in Parkinson's disease

1985 • 68 citations

Psychological Effects of Stereotaxic Operations for the Relief of Parkinsonian Symptoms

1960 • 63 citations

Microtopography of methionine-enkephalin, dopamine and noradrenaline in the ventral mesencephalon of human control and Parkinsonian brains

1982 • 63 citations

Levodopa's awakening effect on patients with Parkinsonism

1971 • 62 citations

Organic Mental Syndrome and Confusional States in Parkinson's Disease

1981 • 61 citations

Cognitive fluctuations associated with on‐off phenomenon in Parkinson disease

1982 • 59 citations

Cerebral blood flow and cognitive impairment in Parkinson's disease

1985 • 59 citations

LEVODOPA, PARKINSONISM, AND RECENT MEMORY

1977 • 58 citations

Retrograde Amnesia in Parkinson’s Disease

1984 • 56 citations

Contribution of perceptual motor dysfunction to construction and tracing disturbances in Parkinson's disease.

1984 • 55 citations

Personality (MMPI) and Cognitive (WAIS) Changes After Levodopa Treatment

1971 • 55 citations

Neurotransmitter Precursor Amino Acids in the Treatment of Multi‐Infarct Dementia and Alzheimer's Disease†

1977 • 54 citations

Intellectual Changes Associated With Levodopa Therapy

1970 • 53 citations

Sensorimotor control in Parkinsonism

1973 • 50 citations

Increased fragility of erythrocytes from amyotrophic lateral sclerosis (ALS) patients provoked by mechanical stress

1984 • 48 citations

The Morphological Basis of Dementia in Parkinson’s Disease

1984 • 47 citations

A note on alterations of personal orientation in Parkinsonism

1976 • 47 citations

Cognitive Functioning in Parkinson's Disease: in Relation to Prevalence of Dementia and Psychiatric Diagnosis

1986 • 46 citations

Dementia in Parkinson's disease and (pre) senile dementia of Alzheimer type: morphological aspects and changes in the intracerebral MAO activity.

1984 • 46 citations

Dementia in idiopathic Parkinson's disease

1986 • 46 citations

Dementia without Alzheimer pathology

1985 • 46 citations

Motor planning in Parkinson patients

1983 • 42 citations

Central catecholamine metabolism in vivo and the cognitive and motor deficits in Parkinson's disease.

1983 • 41 citations

Reaction time of patients with Parkinson's disease, with reference to asymmetry of neurological signs.

1985 • 40 citations

Epidemiological survey of dementia in parkinsonism and control population.

1984 • 37 citations

Levodopa treatment of presenile dementia

1977 • 33 citations

COGNITIVE AND PERCEPTUAL PERFORMANCE IN PARKINSONISM AS A FUNCTION OF AGE AND NEUROLOGICAL IMPAIRMENT

1964 • 29 citations

Relationship between primitive reflexes and severity in Parkinson's disease.

1986 • 28 citations

Neuropsychological findings in Parkinson's disease: a comparison between various tests during long-term levodopa therapy.

1975 • 24 citations

Permanent Dementia in Idiopathic Parkinsonism Treated With Levodopa

1973 • 21 citations

LEVODOPA FOR PARKINSONISM IN ELDERLY AND DEMENTED PATIENTS

1973 • 19 citations

L-DOPA IN SENILE DEMENTIA

1970 • 18 citations

Dementia associated with Parkinson's disease: a genetic study.

1980 • 18 citations

Characteristic Clinical Aspects of Parkinson Patients with Intellectual Impairment

1984 • 16 citations

Speech and Language Alterations in Dementia Syndromes

1989 • 16 citations

PARKINSONISM AND DEMENTIA: EFFECTS OF LEVODOPA

1975 • 15 citations

Intellectual and memory function in parkinsonian and non-parkinsonian patients treated with L-dopa.

1973 • 12 citations

Predictive factors for dementia in Parkinson's disease

2009 • 10 citations

Integrative Functions in Parkinsonism

1970 • 10 citations

PSYCHOMOTOR AND COGNITIVE PERFORMANCE IN PARKINSONISM

2009 • 9 citations

Frontal lobe signs as a component of parkinsonism

1982 • 9 citations

PSYCHOLOGICAL STUDIES OF LONGER RANGE L-DOPA THERAPY IN PARKINSONISM

1973 • 8 citations

L-dopa: effect on highest integrative functions in Parkinsonism.

1970 • 8 citations

The Relationship between Parkinson's Disease and Dementia: A study using Proton NMR Imaging Parameters

1985 • 6 citations