Lecture 6 Flashcards
Astonishing Hypothesis
Brain is the engine of reason and the seat of the soul
Thalamus
connects different regions of the brain together
Midbrain
Causes basic instinctual patterns and reflexes
Pons
Connects to the cerebellum
Also participates in reflex reaction
Medulla
Controls temperature, heart rate, breathing
Limbic System
Separate the evolutionary old region of the brain with the new
Amygdala hippocampus and the hypothalamus
Amygdala
Regulates basic drives and emotions
Hypothalamus
Regulates the internal environment and maintains homeostasis
Hippocampus
Keeps track of spatial location and memory
Cerebral Cortex
Grey matter- Unmyelinated
White Matter- Myelinated bundles of fibers that connects patches of cortex together in U shaped tracts
Experiment: Criss Cross cuts had no effect
White matter from gray matter separation= no more communication
Localization
Specific Actions directly correlate to specific regions in the brain
False:
Each action requires a network of brain activity
Hard to find precise areas with easy to state functions
Microcircuitry, so gross location can vastly change
Mass Action
All physiological functions spread out over a maze, entire brain works together
FALSE:
Parts of the brain are not interchangeable
Brain: “Locally global and globally local”
What Pathway
Ventral: Used for the specific recognition of certain objects
Lower pathway
Where & How Pathway
Dorsal: Used for the 3d spatial localization of objects
Higher pathway
Lobes of the Brain
Frontal, Parietal, Occipital, Temporal
Frontal
Lateral: Working memory, conscious thinking, problem solving
Frontal Pole: Executive control over behavior
Medial and Orbital: Integrating emotions and poles with thinking
Parietal
Movement, Orientation, recognition, and perception of stimuli
Temporal
Perception and recognition of auditory signals
Broca’s Aphasia
Non-fluent aphasia where nouns and verbs cannot be found
Occurs when Broca’s area is damaged
Wernicke’s Aphasia
Fluent Aphasia where articles (a, the) are harder to use
Occurs when Wernicke’s area is damaged