Ch. 4-6 Flashcards
Action potential
Travel from cell body along axons to the axon terminals, they are electrochemical currents
Best tool for studying infant brain
fNIRS (functional near infared spectroscopy) uses infared light to detect blood flow changes
Neurons
Information storage and transfer cells of the nervous system
Myelin
Insulation, improves integrity and speed of connection
Autonomic nervous system
Responsible for regulating heart rate, blood pressure, sleep wake, sucking swallowing, etc.
Sympathetic nervous system
Prepares for action, elevates heart rate and increases metabloism
Parasympathetic nervous system
Allows body to relax, slow down , and rest
Amyglada
Emotional memory formation and fear
Hippocampus
Plays important role in formation of memories for events and sequences
Hypothalamus
Links brain to endocrine system via the pituitary gland. In response to stimulation, begins cascade of hormones that activate pituitary gland and release hormones into blood stream
Hypothalamus Pituitary amygdala axis (HPA)
When activated by stress or threat, hormones release from hypothalamus to the pituitary glad to the adrenal glands. This results in the secretion of cortisol.
Cortex
Outer layer of the brain, largest part of the brain, divided into lobes.
frontal lobe (prefrontal cortex)
reasoning, planning, organizing thoughts, and behavior
occipital lobe
where visual information is processed.
parietal lobe
sensory and motor cortices