Neuroscience Disciplines • • • • • • • Neuroanatomy Neurochemistry Neuroendocrinology Neuropathology Neuropharmacology Neurophysiology BIOPSYCHOLOGY Brain Anatomy - Three Divisions FOREBRAIN Telencephalon Cerebral cortex Basal Ganglia Limbic System Diencephalon Thalamus Hypothalamus Brain Anatomy - Three Divisions FOREBRAIN Telencephalon Cerebral cortex Basal Ganglia Limbic System Diencephalon Thalamus Hypothalamus MIDBRAIN Mesencephalon Tectum Tegmentum Periaqueductal Gray HINDBRAIN Metencephalon Cerebellum Pons Myelencephalon Medulla Oblongata Biopsychology • The discipline of neuroscience that attempts to discover how the various neural phenomena studied in the other disciplines control behavior. • Example: Sleep Behavior • What brain structures are responsible for sleep? • What is the chemical content of the structures? • What drugs promote sleep? Members of Society for Neuroscience - Departmental Affiliations Department Psychology Physiology Pharmacology Biology Anatomy Neurology Psychiatry Percentage of Sample 16.1 14.3 12.5 11.2 11.2 6.7 5.8 Divisions of Biopsychology • Physiological Psychology • Manipulations of nervous system in controlled experimental settings • Laboratory animals • “Pure” or “basic” research Psychopharmacology • Drug effects on behavior and how these effects are mediated • “Applied” research - purpose to develop therapeutic drugs Neuropsychology • Effects of brain damage on human behavior • “Applied” research to help those afflicted with behavioral disorders Psychophysiology • Study of the relationship between physiology and behavior in humans • Non-invasive procedures taken from the body surface • Strive to understand the physiology of basic psychological processes such as information processing, emotion Cognitive Neuroscience • The neural basis of cognition including thought, attention and memory • Human research involving non-invasive human brain imaging techniques • Involves interdisciplinary collaboration among neuroscientists Comparative Psychology • Comparison of behavior of different species • Focus on genetics, evolution and adaptiveness of behavior • brain differences that contribute to behavioral differences among species Research approaches used in Biopsychology Somatic Intervention • Bodily Intervention Examples • Administer hormone • Stimulate Brain Area • Local Brain Damage Behavioral Effect Examples Measure Mating Measure Aggression Measure Memory Behavioral Intervention • Somatic Effect • • • • Examples Measure Hormones Measure Brain Activity Measure Brain Anatomy Behavioral Intervention Examples Female with Male Memory Task Altered Rearing Correlational Studies Somatic Variables Behavioral Variables Examples Examples Brain Size Hormonal Levels Learning Scores Strength of Mating Why does one study the biological basis of behavior? Brain Function and Behavior Early Theories Localizationist Theory • • • • • • 1800ff. - Gall, Spurzheim Brain is not a unitary organ Cerebrum is a mosaic of centers Each center has a specific mental function Centers developed in size as a function of use Centers produced protuberances on skull surface • Anatomical Personality or Phrenology Aggregate Field Theory • • • • 1824 - Flourens: 1924 - Lashley Specific mental functions are not localized Brain acts as a whole for each function Any part of cerebral cortex is capable of performing all functions Cellular Connectionism Theory • 1876 - Wernicke: 1861 - Broca • Simple mental functions are discretely localized to single cortical areas • The areas for these simple functions are interconnected • Complex mental functions arise from interactions among several of these areas