Neurocognition I. Methodology A. Direct Stimulation B. Patient Populations C. Scanning of Normal Mental Activity 1. CAT scans 2. PET/ fMRI 3. EEG II. Background A. Parts of the Brain 1. Neurons 2. Synapses 3. Neurotransmitters 4. Structures a. Old brain brain stem b. Forebrain subcortical structures Thalamus Hypothalamus Corpus Callosum Hippocampus Amygdala Olifactory bulb c. Lobes of the neocortex Frontal Parietal Temporal Occipital B. Principles 1. Contralaterality 2. Hemispheric specialization III. Attention/Perception A. Visual System B. perception/attention 1. Neglect Patients Hemifield Neglect Local/global Neglect 2. Prosopagnosia/Agnosia deficits can be quite specific 3. Normal People (shifting attention) IV. Memory A. Amnesia (Anterograde -- HM, Retrograde) 1. Incidental vs. Intentional/Deliberate 2. Implicit vs. Explicit tasks Practice effects in maze learning Word Fragment Completion B. Normal People -- Emotional Memory -- Adrenaline/Amygdala V. Language Are there specific language centers in the brain? A. Aphasias (Broca's/ Wernicke's) Aphasia the disruption of language due to a brain-related disorder Classic view of Broca's: speech impaired, comprehension normal Wernicke's aphasia (normal speech, impaired comprehension, meaning) A variety of other highly specific aphasias also occur. B. Dyslexia C. Reading in Normal People D. Split Brain patients E. Right hemisphere syndrome