Boller F, Mizutani T, Roessmann U, et al: Parkinson disease, dementia and Alzheimer disease: Clinicopathological correlations . Ann Neurol 1980;;7:329-335.
Hakim AM, Mathieson G: Dementia in Parkinson disease: A neuropathologic study . Neurology 1979;;29:1209-1214.
Heston LL: Genetic studies of dementia , in Mortimer J, Schuman F (eds): The Epidemiology of Dementia . New York, Oxford University Press, 1981;, pp 101-114.
Lieberman A, Dziatolowski M, Kupersmith M, et al: Dementia in Parkinson disease . Ann Neurol 1979;;6:355-359.
Whitehouse PJ, Hedreen JC, White C, et al: Loss of neurons in the nucleus basalis in the dementia of Parkinson's disease . Ann Neurol 1983;;13:243-248.
Pirozzolo FJ, Hansch EC, Mortimer JA, et al: Dementia in Parkinson disease: A neuropsychological analysis . Brain and Cognition 1982;; 1:71-83.
Bossom J: The effect of brain lesions on prism adaptation in monkeys . Psychon Sci 1965;;2:45-46.
Caan WC, Stein JF: The effects of cooling globus pallidus on manual tracking in trained rhesus monkeys . J Physiol 1979;;293:69.
Rosvold HE: The frontal lobe system: Cortical-subcortical interrelationships . Acta Neurobiol Exp 1972;;32:439-460.
Teuber HL: Complex functions of basal ganglia , in Yahr MD (ed): The Basal Ganglia . New York, Raven Press, 1976;, pp 151-168.
Thompson R: Localization of the "maze memory system" in the white rat . Physiol Psychol 1974;;2:1-7.
Meier MJ, Story JL: Selective impairment of Porteus Maze test performances after right subthalamotomy . Neuropsychologia 1976;;5:181-189.
Perret E, Kohenof M, Siegfried J: Influences de lésions thalamiques unilatérales sur les fonctions intellectuelles, mnésiques et d'apprentissage des malades Parkinsoniens . Neuropsychologia 1969;;7:79-88.
Bowen FP: Behavioral alterations in patients with basal ganglia lesions , in Yahr MD (ed): The Basal Ganglia . New York, Raven Press, 1976;, pp 169-177.
Boller F: Mental status of patients with Parkinson disease . J Clin Neuropsychol 1980;; 2:157-182.
Aubert H: Eine scheinbare bedeutende Drehung von Objekten bei Neigung des Kopfer nach rechts und links . Arch Pathol Anat Physiol 1861;;20:351-383.
Danta G, Hilton RD: Judgement of the visual vertical and horizontal in patients with parkinsonism . Neurology 1975;;25:43-67.
Proctor F, Riklan M, Cooper ST, et al: Judgement of visual and postural vertical by parkinsonian patients . Neurology 1964;;14:287-293.
Teuber HL, Proctor F: Some effects of basal ganglia lesions in subhuman primates and in man . Neuropsychologia 1964;;2:85-93.
Bowen FP, Hoehn MM, Yahr MD: Cerebral dominance in relation to tapping and tracking behavior in patients with parkinsonism . Neurology 1972;;22:32-40.
Bowen FP, Hoehn MM, Yahr MD: Parkinsonism: Alterations in spatial orientation as determined by a route-walking task . Neuropsychologia 1972;;10:355-361.
Mortimer JA, Pirozzolo FJ, Hansch EC, et al: Relationship of motor symptoms to intellectual deficits in Parkinson disease . Neurology 1982;; 32:133-137.
Hoehn MM, Yahr MD: Parkinsonism: Onset, progression and mortality . Neurology 1967;;17:427-442.
Purdue Research Foundation: Examiner's Manual for the Purdue Pegboard . Chicago, Science Research Association, 1948;.
Dunn LM: Expanded Manual for the Pea-body Picture Vocabulary Test . Circle Pines, Minn, American Guidance Service, 1965;.
Blessed G, Tomlinson BE, Roth M: The association between quantitative measures of dementia and of senile change in the cerebral grey matter of elderly subjects . Br J Psychiatry 1968;;114:797-811.
Hachinski VC, Iliff LD, Zihlka E, et al: Cerebral blood flow in dementia . Arch Neurol 1975;;32:632-637.
Hamilton M: A rating scale for depression . J Neurol Neurosurg Psychiatry 1960;;23:56-62.
Carroll BJ, Fielding JM, Blashki TG: Depression rating scales: A critical review . Arch Gen Psychiatry 1973;;23:361-373.
Wepman JM, Turaids D: Spatial Orientation Memory Test . Chicago, Language Research Associates, 1975;.
Benton AL: The Revised Visual Retention Test . New York, Psychological Corp, 1963;.
Benton AL: Manuel du test de retention visuelle: Applications cliniques et experimentales , ed 2. Paris, Centre de Psychologie Appliquée, 1965;.
Wepman JM, Morency A, Seidl M: Visual Discrimination Test . Chicago, Language Research Associates, 1975;.
Hooper HE: The Hooper Visual Organization Test . Los Angeles, Western Psychological Services, 1958;.
DeRenzi E, Faglioni P: The relationship between visuo-spatial impairment and constructional apraxia . Cortex 1967;;3:327-342.
Benton AL, Hannay HJ, Varnay NR: Visual perception of line direction in patients with unilateral brain disease . Neurology 1975;; 25:907-910.
Royer FL, Holland TR: Rotation of visual designs in psychopathological groups . J Consult Clin Psychol 1975;;43:546-556.
Ratcliffe G: Spatial thought, mental rotation and the right cerebral hemisphere . Neuropsychologia 1979;;17:49-54.
Ferguson GA: Statistical Analysis in Psychology and Education , ed 2. New York, McGraw-Hill Book Co, 1966;.
DeRenzi E, Faglioni R, Scotti G: Judgement of spatial orientation in patients with focal brain damage . J Neurol Neurosurg Psychiatry 1971;;34:489-495.
Meier MJ, Martin WE: Intellectual changes associated with levodopa therapy . JAMA 1970;; 213:465-466.
Botez MI, Barbeau A: Long-term mental changes in levodopa treated patients . Lancet 1973;;2:1028-1029.