Chapter 3 AP Psychology 3.2

The Biological Bases of Behavior

Central Nervous System (CNS)

Central Nervous System (CNS)

Consists of the Brain and Spinal Cord

Afferent

Nerve fibers TOWARDS the CNS

Efferent

Nerve fibers AWAY from the CNS

Peripheral Nervous System

Consists of nerves that lie OUTSIDE the Brain and Spinal cord

Somatic Nervous System

VOLUNTARY PORTION

Automatic Nervous System

Governs INVOLUNTARY, Visceral functions

Sympathetics

Creates the FIGHT OR FLIGHT Response

Parasympathetic

Activates processes that CONSERVE bodily functions

Occupital Love

VISION- BACK of the Brain

Parietal Lobe

Somatosensory (TOUCH)

Temporal Lobe

AUDITORY

Frontal Lobe

MOVEMENT - EXEC. CONTROL

Hindbrain

VITAL FUNCTIONS, Connects Spinal cord and Brain

Medulla

Attaches to the Spinal cord, controls AUTONOMIC FUNCTIONS

Pons

BRIDGE; Connects brainstem and cerebellum

Cerebellum

Coordination of MOVEMENT and EQUILIBRIUM

Midbrain

Lies between hindbrain and forebrain, integrates SENSORY FUNCTIONS

Dopaminergic Projections

Performance in VOLUNTARY movements

Reticular Activating System (RAS)

Bundle of NERVE FIBERS running through the Brain, PAIN PERCEPTION

Forebrain

EMOTION, COMPLEX THOUGHT

Thalamus

The way station for all incoming SENSORY INFORMATION

Hypothalamus

Regulator of BASIC BIOLOGICAL NEEDS before it is passed to other Brain regions

Limbic Systems

Emotion, Motivation, Memory, and other aspects of behavior

Cerebrum

Responsible for COMPLEX MENTAL ACTIVITY, largest and most complex part of the Brain

Cerberal Cortex

Convoluted OUTER LAYER of the Cerebrum

Hippocampus

MAKING MEMORIES

Electroencephalography (EEG)

Moniters electrical activity of the Brain (Lie detector)

Damage Studies/Lesioning

ILLEGAL- Observes consequences of damage to certain areas of the Brain

Electrical Stimulation (ESB)

Electrolysis to stimulate the Brain, Treatment for Parkinsons

Transcranial Magnetic Stimulation (TMS)

Use a magnet to suppress Brain activity (HUMPTY DUMPTY MAN)

Computerized Tomography (CAT SCAN)

Computer enhanced x-ray 1/3

Positron Emission Tomography (PET SCAN)

Radioactively tagged chemicals to serve as markers in blood flow and Brain activity, monitered by x-ray 2/3

Magnetic Resonance Information (MRI SCAN)

Uses Magnetic fields and computer enhancement to image brain structure 3/3