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Functional Implications of Changes in the Senescent Brain: A Review

Published online by Cambridge University Press:  18 September 2015

Charles H.M. Beck*
Affiliation:
Neuropsychology Unit, Department of Psychology, University of Alberta, Edmonton, Alberta
*
Department of Physiology, Biological Sciences Building, University of Alberta, Edmonton, Alberta, T6G 2E9, Canada.
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The morphological, chemical, and physiological changes in the brain accompanying old age are reviewed. The deterioration of the striatal and hypothalamic dopaminergic systems were implicated in the onset of age related Parkinsonian-like slowing of performance and altered affect. Cholinergic hippocampal and neocortical systems were chemically and physiologically abnormal in the aged. The implications for slowed cognitive processing and persistance of the memory trace are presented.

Type
Research Article
Copyright
Copyright © Canadian Neurological Sciences Federation 1978

References

REFERENCES

Adamowicz, J.K. (1976). Visual short-term memory and aging. Journal of Gerontology 31, 3946.CrossRefGoogle ScholarPubMed
Anders, T.A. and Fozard, J.L. (1973). Effects of age upon retrieval from primary and secondary memory. Developmental Psychology 9, 411415.CrossRefGoogle Scholar
Angel, R.AAlsten, VV. and Higgins, J.R. (1970). Control of movement in Park-inson’s disease. Brain 93. 115.CrossRefGoogle ScholarPubMed
Axelrod, S. (1963). Cognitive tasks in several modalities. In Processes of Aging, edited by Williams, R.H. Tibbitts, C. and Donahue, W., Atherton Press, New York, Vol. 1, pp. 132145.Google Scholar
Axelrod, S., Thompson, L.W. and Cohen, L.D. (1968). Effects of senescence on the temporal resolution of somesthetic stimuli presented to one hand or both. Journal of Gerontology 2. 191195.CrossRefGoogle Scholar
Ball, M.J. (1977). Neuronal loss, neurofibrillary tangles and granulovascular degeneration in the hippocampus with aging and dementia. A quantitative study. Acta Neuropathology 37. 11118.Google Scholar
Ball, M.I. and Lo, P. (1977). Granulovacuo-lar degeneration in the aging brain and in dementia. Journal of Neuropathology and Experimental Neurology. 36, 474487.CrossRefGoogle ScholarPubMed
Barton, E.M.. Plemons, J.K.. Willis, S.L. and Baltes, P.B. (1975). Recent findings on adult and gerontological intelligence: changing a stereotype of decline. American Behavioral Scientist 19, 224236.CrossRefGoogle Scholar
Bazo, A.G. (1973). An ergot aklaloid preparation (hydergine) versus papaverine in treating common complaints of the aged: a double blind study. Journal of American Geriatric Society 21. 6371.CrossRefGoogle Scholar
Benton, A.L. (1977). Interactive effects of age and brain disease on reaction time. Archives of Neurology 34. 369370.CrossRefGoogle ScholarPubMed
Birkhill, W.R. and Schaie, K.W. (1975). The effect of differential reinforcement of cautiousness in intellectual performance among the elderly. Journal of Gerotology 30. 578583.CrossRefGoogle ScholarPubMed
Birren, J.E. and Morrison, D.F. (1961). Analysis of the WAIS subtests in relation to age and education. Journal of Gerontology 16. 363369.CrossRefGoogle ScholarPubMed
Blessed, G.. Tomlinson, B.E.. and Roth, M. (1968). The association between quantitative measures and senile changes in the cerebral gray matter of elderly subjects. British Journal of Psychiatry 114. 797802.CrossRefGoogle ScholarPubMed
Boismare, F.. Le Poncin, M.. and Lefrancois, J. (1978). Biochemical and behavioral effects of hypox hypoxia in rats: Study of the protection afforded by ergot alkaloids. Gerontology 24, Suppl. 1, 613.CrossRefGoogle Scholar
Bondareff, W. and Geinisman, Y.. (1976). Loss of synapses in the dentate gyrus of the senescent rat. American Journal of Anatomy 145, 129136.CrossRefGoogle ScholarPubMed
Botwinick, J.. (1973). Aging and Behavior, Springer. New York, p. 132.Google Scholar
Botwinick, J.. Brinley, J.F., and Birren, J.E.. (1975). Set in relation toage. Journal of Gerontology 12, 300305.CrossRefGoogle Scholar
Botwinick, J., Brinley, J.F., and Robbin, J.S.. (1958). Task alternation time in relation to problem difficulty and age. Journal of Gerontology 13, 414417.CrossRefGoogle ScholarPubMed
Botwinick, J., Brinley, J.F., and Robbin, J.S.. (1959). Modulation of speed of response with age. Journal of Genetic Psychology 95, 137144.CrossRefGoogle ScholarPubMed
Botwinick, J.Robbin, J.S.. and Brinley, J.F.. (1959). Reorganization of perceptions with age. Journal of Gerontology 14, 8588.CrossRefGoogle ScholarPubMed
Bowen, D.M.. Smith, C.B., White, P., and Davison, A.N., (1976). Neuro-transmitter-related enzymes and indices of hypoxia in senile dementia and other abiotrophies. Brain 99, 459496.CrossRefGoogle ScholarPubMed
Bowen, F.P., Hoehn, M.M. and Yahr, M.D. (1972). Cerebral dominance in relation to tracking and tapping performance in patients with parkinsonism. Neurology 22, 3239.CrossRefGoogle ScholarPubMed
Branconnier, R.J. and Cole, J.O. (1978). The impairment index as a symptom-independent parameter of drug efficacy in geriatic psycho-pharmacology. Journal of Gerontology 33. 217223.CrossRefGoogle Scholar
Brizzee, K.R., Ordy, J.M. and Kaack, B. (1974). Early appearance and regional differences in intraneuronal and extraneur-onal lipofuscin accumulation with age in the brain of a nonhuman primate. Journal of Gerontology 29, 366381.CrossRefGoogle ScholarPubMed
Brizzee, K.R., Sherwood, N. and Timiras, P.S.. (1968). Comparison of cell populations at various levels in the cerebral of young adult and aged Long-Evans rats. Journal of Gerontology 23, 289297.CrossRefGoogle ScholarPubMed
Broch, O.J. JR., (1973). The postnatal development of catechol-o-methyl transferase in the rat brain. Journal of Neurochemistry 20, 847852.CrossRefGoogle ScholarPubMed
Brody, H. (1955). Organization of the cerebral cortex. III. A study of aging in the human cerebral cortex. Journal of Comparative Neurology 102, 511556.CrossRefGoogle Scholar
Brumlick, J. and Boshes, B. (1966). The mechanism of bradykinesia in parkinsonism. Neurology 16. 337344.CrossRefGoogle Scholar
Brunk, U. and Ericcson, J.L.E. (1972). Electron microscopic studies on rat brain neurons. Localization of acid phosphatase and mode of formation of lipofuscin bodies. Journal of Ultrastructure Research 38, 138.CrossRefGoogle ScholarPubMed
Chen, J.C, Warshaw, J.B.. and Sanadl, D.R. (1972). Regulation of mitochondrial respiration in senescence. Journal of Cellular & Comparative Physiology 80, 141148.CrossRefGoogle ScholarPubMed
Clark, W.C. and Mehl, L. (1971). Thermal pain: A sensory decision theory analysis of the effect of age and sex on d1, various response criteria and 50% pain threshold. Journal of Abnormal Psychology 78, 202212.CrossRefGoogle Scholar
Comfort, A. (1974). The position of aging studies. Mechanisms of Aging & Develop-ment 3, 131.CrossRefGoogle ScholarPubMed
Corso, J.F. (1975). Sensory processes in man during motility and senescence. In Neurobiology of Aging, edited by Ordyand, J.M.Brizzee, K.R., Plenum, New York, pp. 119143.CrossRefGoogle Scholar
Crapper, D.R. (1974). Dementia: Recent observations in Alzheimer’s disease and experimental aluminum encephalopathy. In Frontiers in Neurology and Neuroscience Research, edited by Seeman, P. and Brown, G.M., Toronto, University of Toronto Press, pp. 97111.Google Scholar
Crapper, D.R., Krishnan, S.S. and Dalton, A.J. (1973). Brain aluminum distribution in Alzheimer’s disease and experimental neurofibrillary degeneration. Science 180, 511513.CrossRefGoogle ScholarPubMed
Crapper, D.R., Krishnan, S.S. and Quittkat, S.. (1976). Aluminum, neuro-fibrillary degeneration and Alzheimer’s disease. Brain 99. 6780.CrossRefGoogle Scholar
Dastur, D.K., Lane, M.H., Hansen, D.B.. Kety, S.S., Butler, R.N., Perlin, S., and Sokoloff, L., (1963). Effects of aging on cerebral circulation and metabolism in human aging: A biological and behavioral study. Washington, D.C., Public Health Service Publication, United States Government Printing Office, No. 986.Google Scholar
Davidson, G.S. and Neale, J.M.. (1974). The effects of signal-noise similarity on visual information processing in schizophrenics. Journal of Abnormal Psychology 83, 683686.CrossRefGoogle ScholarPubMed
Dayan, A.D.. (1970). Quantitative histological studies on the aged brain. II. Senile plaques and neurofibrillary tangles in senile dementia. Acta Neuropathological 16, 95102.CrossRefGoogle ScholarPubMed
Drachman, D.A. and Leavitt, J. (1974). Human memory and the cholinergic system. Archives of Neurology 30, 113121.CrossRefGoogle ScholarPubMed
Dyck, P.J., Curtis, D.J., Bushek, W. and Offord, K. (1974). Description of “Minnesota Thermal Disks” and normal values of cutaneous thermal discrimination in man. Neurology 24, 325330.CrossRefGoogle ScholarPubMed
Dyck, P.J.. Schultz, P.W. and O’brien, P.C., (1972). Quantitation of touch pressure sensation. Archives of Neurology 26, 465473.CrossRefGoogle ScholarPubMed
Eber, J.T. (1976). Age differences in learning and memory on a digit symbol substitution task. Experimental Aging Research 2. 4553.CrossRefGoogle Scholar
Ermini, M.Szelenyi, JMoser, P. and Verzar, F.. (1971). The aging of skeletal (striated) muscle by changes of recovery metabolism. Gerontologa 17, 300311.CrossRefGoogle ScholarPubMed
Eysenck, M.W. (1974). Age differences in incidental learning. Developmental Psychology 10, 936941.CrossRefGoogle Scholar
Finch, C.E.. (1973). Catecholamine metabolism in the brains of aging male mice. Brain research 52, 261276.CrossRefGoogle Scholar
Ford, J.M. and Roth, W.T. (1977). Do cognitive abilities decline with age? Geriatrics 32, 5962.Google ScholarPubMed
Fozard, J.L., Thomas, J.C JR., and Waugh, N.C. (1976). Effects of age and frequency of stimulus repetitions on two-choice reaction time. Journal of Gerontology 31, 556563.CrossRefGoogle ScholarPubMed
Freedman, L.S., Ohuchi, T, Goldstein, M., Axelrod, F.Fish, I. and Dancis, J. (1972). Changes in human serum dopamine-β-hydroxylase activity with age. Nature 236, 310311.CrossRefGoogle ScholarPubMed
Frolkis, W., Bezrukov, V.V.. and Sinitsky, V.N. (1972). Sensitivity of central nervous structures to humoral factors in aging. Experimental Gerontology 7, 185194.CrossRefGoogle ScholarPubMed
Fujita, T., Ohata, M., Ota, K., Tsuda, T., Uezi, A., Okano, K. and Yoshikawa, M. (1976).Aging and parathyroid hormone secretion. Journal of Gerontology 31, 523526.CrossRefGoogle ScholarPubMed
Gaylord, S.A. and Marsh, G.R. (1975). Age differences in the speed of a spatial cognitive process. Journal of Gerontology 30, 674678.Google ScholarPubMed
Geinisman, Y., Bondareff, W., and Telser, A., (1977a). Transport of (3H) frucose labeled glycoproteins in the septo-hippocampal pathway of young adult and senescent rats. Brain Research 25, 182186.CrossRefGoogle Scholar
Geinisman, Y., Bondareff, W.. and Telser, A. (1977b). Diminished axonal transport of glycoprotein in the senescent rat brain. Mechanisms of Aging and Development 6, 363378.CrossRefGoogle ScholarPubMed
Gellerstedt, E. (1931). Klinisch-generalo-gischer Nachweis von Erblichkeit bei Pickscher Krankheit. Zeitschrift fur Neurologische Psychiatrie 136, 464471.Google Scholar
Giorgino, R., Scardapane, R., Nardelli, G.M. and Tafaro, E., (1969). Adrenal glands and aging: Aspects of medullary activity. Folia Endocrinology 22, 215224.Google ScholarPubMed
Goldstein, M., Lew, J.Y.. Hata, F., and Lieberman, A.. (1978). Binding interactions of ergot alkaloids with mono-aminergic receptors in the brain. Gerontology 24. Suppl. 1, 7685.CrossRefGoogle Scholar
Goodrick, C.L. (1972). Learning by mature young and aged Wistar albino rats as a function of test complexity. Journal of Gerontology 27. 353357.CrossRefGoogle Scholar
Govoni, S.. Loddo, P.. Spano, R.F.. and Trabucchi, M.. (1977). Dopamine receptor sensitivity in brain and retina of rats during aging. Brain Research 138, 565570.CrossRefGoogle ScholarPubMed
Gruzelier, J.H., Lykken, D.T. and Venables, P.H.. (1972). Schizophrenia and arousal revisited. Archives of General Psychiatry 26. 427432.CrossRefGoogle ScholarPubMed
Gutmann, E. and Hanzlikova, V.. (1972). Basic mechanisms of aging in the neuro-muscular system. Mechanisms of Aging and Development. 1, 327349.CrossRefGoogle Scholar
Gutmann, E. and Hanzlikova, V. (1976). Fast and slow motor units in ageing. Gertontology 22, 280300.CrossRefGoogle ScholarPubMed
Gygax, P., Wiernsperger, N, Meierruge, W., and Baumann, T., (1978). Effect of Papaverine and dihydroergotoxine mesylate on cerebral microflow, EEG and p02 in oligemic hypotension. Gerontology 24 Suppl. 1, 1422.CrossRefGoogle Scholar
Hagberg, B.. and Ingvar, D.H.. (1976). Cognitive reduction in presenile dementia related to regional abnormalities of the cerebral blood flow. British Journal of Psychiatry 128, 209222.CrossRefGoogle ScholarPubMed
Harkins, S.W., and Chapman, R., (1976). Detection and decision factors in pain perception in young and elderly men. Pain 2, 253264.CrossRefGoogle Scholar
Heath, A., and Orbach, J., (1963). Reversibility of the necker cube: IV Responses of elderly people. Perceptual and Motor Skills 17, 625626.CrossRefGoogle ScholarPubMed
Heglin, H.J.. (1956). Problem solving set in different age groups. Journal of Gerontology 11, 310317.CrossRefGoogle ScholarPubMed
Hirano, A.. (1970). Neurofibrillary changes in conditions related to Alzheimer’s disease. In Alzheimer’s Disease and Related Conditions, edited by Wolsten-holme, G.E.W. and O’Connor, M., London, Churchill, pp. 185200.Google Scholar
Hoffbrand, B.I., Maclay, W.P., and Turner, P., (1976). Ergot compounds – the changing scence. Post-graduate Medical Journal 52, Suppl. 1, 162.Google Scholar
Hoyer, W.J., Labouvie, G.V. and Baltes, P.B., (1973). Modification of response speed deficits and intellectual performance in the elderly. Human Development 16, 233242.CrossRefGoogle ScholarPubMed
Hulicka, I.M.. (1965). Age differences for intentional and incidental learningand recall scores. Journal of the American Geriatrics Society 13, 639684.CrossRefGoogle Scholar
Huziker, O., Abdel’al, S., Frey, H., Veteau, M-J and Meier-Ruge, W.. (1978). Quantitative studies in the cerebral cortex of aging humans. Gerontology 24, 2731.CrossRefGoogle Scholar
Ingvar, D.H., and Lassen, N.A., (1970). Cerebral blood flow and cerebral metabo-lism. Triangle 9, 234243.Google Scholar
Jonec, V. and Finch, C.E.. (1975). Aging and dopamine uptake by subcellular frac-tions of the C57I3L/6J male mouse brain. Brain Research 91, 197215.CrossRefGoogle Scholar
Kent, S.. (1977). Classifying and treating organic brain syndromes. Geriatrics 32, 8789, 93–96.Google ScholarPubMed
Kimble, D.P.. (1968). Hippocampus and internal inhibition. Psychological Bulletin 70, 285295.CrossRefGoogle ScholarPubMed
Klauser, D.H.. and Kleim, D.M.. (1978). Age differences in processing relevant stimuli in multiple-item recognition learning. Journal of Gerontology 33, 8793.Google Scholar
Klein, A.W.. and Michel, M.E., (1977). A morphometric study of the neocortex of young adult and old maze – differentiated rats. Mechanisms of Ageing and Develop-ment 6, 441452.CrossRefGoogle ScholarPubMed
Kline, D.W., Culler, M.P., and Sucec, J., (1977). Differences in inconspicuous word identification as a function of age and reversible - figure training. Experimental Aging Research 3, 203213.CrossRefGoogle ScholarPubMed
Kline, D.W., and Nestor, S., (1977). The persistence of complementary after images as a function of adult age and exposure deviation. Experimental Aging Research 3, 191201.CrossRefGoogle Scholar
Kline, D.W., and Orme-Rogers, C., (1978). Examination of stimulus persistence as the basis for superior visual identification performance among older adults. Journal of Gerontology 33, 7681.CrossRefGoogle ScholarPubMed
Kline, D.W.. and Szafran, J.. (1975). Age differences in backward monoptic visual noise masking. Journal of Gerontology 30, 307311.CrossRefGoogle ScholarPubMed
Kokmen, E., Bossemeyer, R.W. JR., and Williams, W.J., (1978). Quantitative evaluation of joint motion sensation in an aging population. Journal of Gerontology 33, 6267.CrossRefGoogle Scholar
Kolb, L.C.. (1968). Noyes’ Modern Clinical Psychiatry, Philadelphia, W. B. Saunders, pp. 250258.Google Scholar
Kramer, S.G., (1971). Dopamine: a retinal neurotransmitter. I. Retinal uptake, storage and light-stimulated release of [3H] dopamine in vivo. Investigative Ophthal-mology 10, 438445.Google ScholarPubMed
Kvetnansky, R., Jahnova, E., Torda, T., Strbak, V., Balaz, V., and Macho, L., (1978). Changes of adrenal catecholamines and their synthesizing enzymes during ontogenesis and aging in rats. Mechanisms of Ageing and Development 7, 209216.CrossRefGoogle ScholarPubMed
Landfield, P.W., and Lynch, G.S., (1977). Brain aging and plasma steroid levels: quantitative correlations. Neuroscience Abstracts 3, 111.Google Scholar
Lassen, N.A., Feinberg, I., and Lane, M.H., (1960). Bilateral studies of cerebral oxygen uptake in young and aged normal subjects and in patients with organic dementia. Journal of Clinical Investigation 39, 491500.CrossRefGoogle Scholar
Lee, K.S., Etgen, A.M., and Lynch, G.S., (1977). Corticosterone modification of the synthesis of specific proteins in the central nervous system. Neuroscience Abstracts 3, 350.Google Scholar
Machado-Salas, J., Scheibel, M.E., and Scheibel, A.G., (1977). Neuronal changes in the aging mouse; spinal cord and lower brain stem. Experimental Neurology 54, 504512.CrossRefGoogle ScholarPubMed
Malamud, N. (1972). Neuropathology of organic bain syndromes associated with aging. In Gaitz, C.M., (Ed.), Aging and the Brain. New York: Plenum Press, pp. 6388.CrossRefGoogle Scholar
Matsuyama, H.. Namiki, H., and Watanabe, I.. (1966). Senile changes in the brain in the Japanese. Incidence of Alzheimer’s neurofibrillary change and senile plaques. In International Congress of Neuropathology, 5th, Zurich, edited by Luthy, F. and Bischoff, A.. Amsterdam, Excerpta Medica Foundation, pp. 979980.Google Scholar
Mcfarland, R.A., Warren, B., and Kavis, C., (1958). Alterations in critical flicker frequency as a function of age and light: dark ratio. Journal of Experimental Psychology 56, 529538.CrossRefGoogle ScholarPubMed
Mcgeer, P.L., Mcgeer, E.G., and Suzuki, J.S., (1977). Aging and extrapyramidal function. Archives of Neurology 34, 3335.CrossRefGoogle ScholarPubMed
Meier-Ruge, W.. (1975). Experimental pathology and pharmacology in brain research and aging. Life Sciences 17, 16271636.CrossRefGoogle ScholarPubMed
Mergler, N.L., Dusik, J.B., and Hoyer, W.J., (1977). Central/incidental recall and selective attention in young and elderly adults. Experimental Aging Research 3, 4960.CrossRefGoogle Scholar
Miller, C.A.. and Levine, E.M. (1974). Effects of aluminum salts on cultured neuro-blastoma cells. Journal of Neurochcmistry 22, 751758.CrossRefGoogle Scholar
Milner, B. (1970). Memory and the medial temporal regions of the brain. In Biology of Memory, edited by Pribram, K.H. and Broadbent, D.E., New York, Academic Press, pp. 2950.CrossRefGoogle Scholar
Misiak, H. (1951). The decrease of critical flicker frequency with age. Science 113, 551552.CrossRefGoogle ScholarPubMed
Mundy-Castle, A.C.. (1953). An analysis of central responses to photic stimulation in normal adults. Electroencephalography & Clinical Neurophysiology 5. 122.CrossRefGoogle ScholarPubMed
Obrist, W.D., Chivian, E., Cronqvist, S., and Ingvar, D.H. (1970). Regional cerebral blood flow in senile and presenile dementia. Neurology 20, 315322.CrossRefGoogle ScholarPubMed
Ohara, P.T., (1972). Electron microscropial study of the brain in Down’s syndrome. Brain 95, 681684.CrossRefGoogle ScholarPubMed
Ooka, H., Segall, P.E., and Timiras, P.S., (1978). Neural and endocrine development after chronic tryptophan deficiency in rats. II. Pituitary-thyroid axis. Mechanisms of Ageing and Development 7, 1924.CrossRefGoogle ScholarPubMed
Orgel, L.E.. (1963). The maintenance of the accuracy of protein synthesis and its relevance to aging. Proceedings of the National Academy Sciences 49, 517521.CrossRefGoogle Scholar
Patch, M.S., (1977). Age-dependent changes in the oxidative metabolism in rat brain. Journal of Gerontology 32, 643646.Google Scholar
Perry, E.K., Perry, R.H.. Gibson, P.H., Blessed, G.. and Tomlinson, B.E. (1977). A cholinergic connection between normal aging and senile dementia in the human hippocampus. Neuroscience Letters 6, 8589.CrossRefGoogle ScholarPubMed
Phillips, A.G., and Fibiger, H.C., (1973). Dopaminergic and noradrenergic substrates of postive reinforcement: Different effects of D- and L-amphetamine. Science 179, 575577.CrossRefGoogle Scholar
Plemons, J.K., Willis, S., Land Baltes, P.B., (1978). Modifiability of fluid intelligence in aging: A short-term longtitudinal training approach. Journal of Gerontology 33, 224231.CrossRefGoogle Scholar
Ploski, H.A., Levita, E. and Riklan, M. (1966). Impairment of voluntary movement in parkinson’s disease in relation to activation level autonomic malfunction and personal rigidity. Psychosomatic Medicine 28, 7077.CrossRefGoogle ScholarPubMed
Rabbitt, P.. (1965). An age-decrement in the ability to ignore irrelevant information. Journal of Gerontology 20, 233238.CrossRefGoogle ScholarPubMed
Reading, V.. (1968). Disability glare and age. Vision Research 8, 207214.CrossRefGoogle ScholarPubMed
Retzlaff, E., and Fontaine, J., (1965). Functional and structural changes in motor neurons with age. In Behavior, Aging and the Nervous Systems, Springfield, Illinois, C. C. Thomas, pp. 340352.Google Scholar
Riklan, M., Levita, E., and Misiak, H. (1970). Critical flicker frequency and integrative functions in parkinsonism. Journal of Psychology 75, 4551.CrossRefGoogle ScholarPubMed
Roberts, J., Goldberg, P.B., and Baskin, S.I., (1976). Biochemical changes in the central nervous system with age in the rat. Experimental Aging Research 2, 6174.CrossRefGoogle Scholar
Robinson, D.S., Sourkes, T.L., Nies, A., Harris, L.S., Spector, S., Bartlett, D.L. and Kaye, I.S., (1977). Monoamine metabolism in human brain. Archives of General Psychology 34, 8992.CrossRefGoogle ScholarPubMed
Ross, M.H., and Lustbader, E., (1976). Dietary practices and growth responses as predictors of longevity. Nature 262, 548553.CrossRefGoogle ScholarPubMed
Saccuzzo, D.P., Hirt, M., and Spencer, T., (1974). Backward masking as a measure of attention in schizophrenics. Journal of Abnormal Psychology 83, 512522.CrossRefGoogle Scholar
Salthouse, T.A., (1978). The role of memory in the age decline in digit-symbol substitution performance. Journal of Gerontology 33, 232238.CrossRefGoogle ScholarPubMed
Samorajski, T., and Rolsten, C., (1976). Chlorpromazine and aging in the brain. Experimental Gerontology 2, 141147.CrossRefGoogle Scholar
Schaie, K.W., Lavouvie, G.V., and Buech, B.V., (1973). Generational and cohort-specific differences in adult cognitive functioning. Developmental Psychology 9, 151166.CrossRefGoogle Scholar
Scheibel, M.E., Lindsay, R.D., Tomiyasu, U., and Scheibel, A.B., (1975). Progressive dendritic changes in aging human cortex. Experimental Neurology 47, 392403.CrossRefGoogle ScholarPubMed
Scheibel, M.E., Tomiyasu, U., and Scheibel, A.B., (1976). Dendritic changes in the aging human rhinencephalon. Transactions of the American Neurological Association 101, 2326.Google ScholarPubMed
Schneider, N.G., Gritz, E.R., and Jarvik, M.E., (1975). Age differences in learning, immediate and one week delayed recall. Gerontologia 21, 1020.CrossRefGoogle ScholarPubMed
Segall, P.E., Ooka, H., Rose, K., and Timiras, P.S., (1978). Neural and endocrine development after chronic trypotphan deficiency in rats: I. Brain monomine and ptituitary responses. Mechanisms of Ageing and Development 7, 117.CrossRefGoogle Scholar
Shader, R.I., Harmatz, J.S., and Saltzman, C., (1974). A new scale for clinical assessment in geriatric patients: Sandoz clinical assessment in geriatrics (SCAG). Journal of the American Geriatric Society 22, 107113.CrossRefGoogle Scholar
Simard, D. (1971). Regional blood and its regulation in dementia. Brain 94, 273288.CrossRefGoogle ScholarPubMed
Sotgiu, G., Cussini, G., Chierici, F., and Vancini, B., (1960). Senile adrenal hyper-medullism. Panminerva Medicine 2, 15.Google Scholar
Spano, P.F., Kumakura, K., Tonon, G.C, Govoni, S. and Trabucchi, M., (1975). LSD and dopamine sensitive adenylate cylase in various rat brain areas. Brain research 93, 164167.CrossRefGoogle Scholar
Spano, P.F., and Trabucchi, M., (1978). Interaction of ergot alkaloids with dopaminergic receptors in the rat striatum and nucleus accumbens. Gerontology 24, Suppl. 1, 106114.CrossRefGoogle ScholarPubMed
Spillane, J.A., White, P., Goodhardt, M.J., Flack, R.H., Bowen, D.M., and Davison, A.N., (1977). Selective vulnerability of neurons in organic dementia. Nature 266, 558559.CrossRefGoogle ScholarPubMed
Spirdusco, W.W., (1975). Reaction and movement time as a function of age and physical activity level. Journal of Gerontology 30. 435440.CrossRefGoogle Scholar
Spirduso, W.W., and Clifford, P., (1978). Replication of age physical activity effects on reaction and movement time. Journal of Gerontology 33, 2630.CrossRefGoogle ScholarPubMed
Stein, D.G., and Firl, A.C. (1976). Brain damage and reorganization of function in old age. Experimental Neurology 52, 157167.CrossRefGoogle ScholarPubMed
Sun, A.Y., (1976). Aging and in vivo norepine-phrine-uptake in mammalian brain. Experimental Aging Research 2, 207220.CrossRefGoogle ScholarPubMed
Sun, A.Y., and Samorajski, T., (1975). The effects of age and alcohol on Na-K ATPase activity of the whole homogenate and synaptosomes prepared from mouse and human brain. Journal of Neurochemistry 24. 161164.Google Scholar
Sun, A.Y., and Seaman, R.N., (1977). The effect of aging on synaptosomal (Ca2*) transport in the brain. Experimental Aging Research 3, 107116.CrossRefGoogle ScholarPubMed
Terry, R.D., and Pena, C., (1965). Experimental production of neurofibrillary degeneration .2. Electron microscopy. phosphatase histochemistry and electron probe analysis. Journal of Neuropathology and Experimental Neurology 24, 200210.CrossRefGoogle ScholarPubMed
Tonna, E.A., and Singh, I.J., (1976). An autoradiographic investigation of 3H-Uridine utilization by aging mouse cartilage cells. Experimental Gerontology 2, 231241.CrossRefGoogle Scholar
Ungerstedt, W., (1971). Mechanism of action of L-DOPA studied in an experimental Parkinson model. In Monoamines, Noyaux Gris Centraux et Syndrome de Parkinson, edited by De Ajuriaguerra, J., and Gauthier, G., Paris, Masson and Georg. pp. 165170.Google Scholar
Victor, M.Adams, R.D., and Collins, G.H., (1971). The Wernicke-Korsakoff Syndrome, Philadelphia, R. A. David, pp. 71135.Google ScholarPubMed
Vijayan, V.K., (1977). Cholinergic enzymes in the cerebellum and the hippocampus of the senescent mouse. Experimental Gerontology, 12, 711.CrossRefGoogle ScholarPubMed
Vries, H.A, De, (1971). Exercise intensity threshold for improvement of cardiovascular-respiratory function in older men. Geriatrics 26, 94101.Google ScholarPubMed
Weiss, A.D. (1959). Sensory functions. In Handbook of Aging and the Individual, edited by Birren, J.E., Chicago, University of Chicago Press, pp. 503542.Google Scholar
Whanger, A.D.. and Wang, H.S., (1974). Clinical correlates of vibratory sense in the elderly psychiatric patients. Journal of Gerontology 29, 3945.CrossRefGoogle ScholarPubMed
White, P., Goodhardt, M.J., Keet, J.P., Hiley, C.R.. Carrasco, L.H., Williams, I.E.I.. and Bowen, D.M., (1977). Neocortical cholinergic neurons in elderly people. Lancet, 1, 668671.CrossRefGoogle ScholarPubMed
Williams, M., (1970). The psychological assessment of geriatric patients. In the Psychological Assessment of Mental and Physical Handicaps edited by Mittler, P.J., London, Methuen, pp. 319339.Google Scholar
Winn, F.J., and Elias, J.W., (1977). Age, rate and instructional conditions: empirical support against the pacing variable. Experimental Aging Research 3. 305324.CrossRefGoogle ScholarPubMed
Wisniewski, H.M., and Terry, R.D., (1976). Neuropathology of the aging brain. In Neurobiology of Aging, edited by Terry, R.D., and Gershon, S., New York, Raven Press, pp. 265280.Google Scholar
Wolf, E., (1960). Glare and age. Archives of Ophthalmology 64, 502514.CrossRefGoogle ScholarPubMed
Yates, A.J., (1966). Data processing levels and thought disorder in schizophrenics. Australian Journal of Psychology 18, 103107.CrossRefGoogle Scholar
Yates, A.J., (1966). Data processing levels and thought disorder in schizophrenics. Australian Journal of Psychology 18, 103107.CrossRefGoogle Scholar
Yates, A.J., and Korboot, P., (1970). Speed of perceptual functioning in chronic nonparanoid schizophrenics. Journal of Abnormal Psychology 76, 453461.CrossRefGoogle ScholarPubMed
Zelinski, E.M., Walsh, D.A., and Thompson, L.W., (1978). Orienting task effects on EDR and free recall in three age groups. Journal of Gerontology 33, 239245.CrossRefGoogle ScholarPubMed