Prologue -- Psychological and Epidemiological Aspects -- Cognitive Changes in Aging: Competence and Incompetence -- Epidemiological Aspects of Organic Brain Disease in the Aged -- Aspects of Neuropsychological Assessment in Patients with Cerebral Disease -- Chemical and Pathological Aspects -- Neurochemistry of Aging -- Neuropathology of Organic Brain Syndromes Associated with Aging -- Ultrastructure of Senile Dementia and of Experimental Analogs -- Physiological and Diagnostic Aspects -- Cerebral Physiology of the Aged: Influence of Circulatory Disorders -- Laboratory Adjuncts to Differential Diagnosis -- Autonomic Changes in Aging -- Differential Diagnosis of the Organic Mental Disorders in Elderly Patients -- Clinical Aspects -- The Relationship Between Organic Brain Disease and Physical Status -- Multidimensional Treatment Approaches -- Psychopharmacological Aspects of Geriatric Medicine -- Some Psychodynamic Aspects of Agedness -- Review of Proceedings: Directions for Future Research -- Toward an Interdisciplinary Approach -- Epilogue