Psychology

Doreen Pang Mrs. Trainor AP Psychology 18 October 2016 Module 5-3: Hemispheres & Split Brain Our divided brain We?ve known for over 100 years that the two sides of the brain have different purposes. Damage to the left hemisphere resulted in problems with: reading writing speaking math reasoning Around 1960 discovered that the right hemisphere had its specialties patients with severe epileptic seizures had their corpus callosum cut The corpus callosum links the two hemispheres The seizures stopped and the patients were very normal afterwards. These patients were then subject to experiments. The patient stared at the center of a screen and words or images were sent displayed to each side and thus were sent to one half of their brain Left brain

Doreen Pang Mrs. Trainor AP Psychology 12 October 2016 Module 5-1: The Brain The Tools of Discovery Lesion (Tissue destruction) destroy EEG the electrodes on head Usually used for sleeping waves PET looks at radioactive glucose Looks at molecular cellular structure allows for us to detect disease early MRI magnetic fields and radio waves to look at soft tissue Brainstem Oldest structure Responsible for older structures Base is Medulla controls heartbeat and breathing damage=death Pons Above the medulla helps coordinate movement Reticular Formation (Reticular Activating System) Runs all the way down the brainstem think nylons controlling arousal damage=coma Thalamus on top of brainstem directs messages to the sensory areas (except smell) Cerebellum ?little brain?

Doreen Pang Mrs. Trainor AP Psychology 10 October 2016 Module 4-3: How Neurons Communicate: The Neural Chain Specialized cells in the sensory systems of the body Can turn some energy --> action potentials Neural impulses Our brain only uses neural energy to communicate specialised cells that translate outer energy into neural impulse Receptor cells in the eye turn light into a neural impulse the brain understands. Sensory (Afferent) Nerve Carry info. from the sensory receptors to: spinal cord brain A network of cells that take thermal energy and translate into neural impulse Connect the sense organs to the brain and spinal cord. Interneurons Nerve cells in the brain and spinal cord responsible for processing information. Related to sensory input and motor output.

Doreen Pang Mrs. Trainor AP Psychology 5 October 2016 Module 4-1: Neural and Hormonal Systems Neural Communication Body?s info sys. is built from billions of neurons Systems are composed of smaller subsystems Biophysical systems Smaller system in med sys. in large sys. Biological psychologists Branch of psychology concerned with the links btwn biology and behvaior. gaining better understanding of: Sleep and dreams depression and schizophrenia hunger and sex stress and disease Neurons Neurons building blocks of the nervous system Dendrite fibers on a neuron that receive info and conduct it toward the cell body Axon fibers that pass the message along to other neurons Dendrites speaks, Axons listen Motor neurons controls muscles neural system?s giant redwoods Myelin Sheath