Biology and Behavior Flashcards
What is neuropsychology
study of the connection between the nervous system and behavior
often focuses on the functions of various brain regions
What are the three types of neurons in the nervous system
afferent (sensory)
efferent (motor)
interneurons
What are reflex arcs
use the ability of interneurons in the spinal cord to relay information to the source of stimuli while simultaneously routing it to the brain
What makes up the nervous system
CNS and PNS
What makes up the CNS
Central nervous system
brain and spinal cord
What makes up the PNS
Peripheral nervous system
most cranial nerves and spinal nerves
What are the divisions of the PNS
somatic (voluntary) and autonomic (automatic)
What are the divisions of the autonomic system
parasympathetic (rest and digest) and sympathetic (flight or fight)
What are the three subdivisions of the brain
- hindbrain: contains the cerebellum, medulla oblongata, reticular formation
- midbrain: contains the inferior and superior colliculi
- forebrain: contains the thalamus, hypothalamus, basal ganglia, limbic system, and cerebral cortex
What are common methods for studying the brain
studying lesions, electrical stimulation and activity recording (EEG and regional cerebral blood flow)
What part of the brain contains the cerebellum, medulla oblongata, reticular formation
hindbrain
What part of the brain contains the contains the inferior and superior colliculi
midbrain
What part of the brain contains the thalamus, hypothalamus, basal ganglia, limbic system, and cerebral cortex
forebrain
What does the forebrain contain
thalamus, hypothalamus, basal ganglia, limbic system, and cerebral cortex
What does the hindbrain contain
cerebellum, medulla oblongata, reticular formation
What does the midbrain contain
inferior and superior colliculi
What is the function of the thalamus
- relay station for sensory information (except for smell)
- receives sensory information and relays it to the appropriate areas of the cerebral cortex
- in forebrain
What is the function of the hypothalamus
- maintains homeostasis
- hunger and thirst and sexual drive
- emotion
- key player in experiences during high arousal states, aggressive behavior, and sexual behavior
- controls some endocrine functions and autonomic nervous system
- metabolism, temperature, and water balance
- integrates with the endocrine system through the hypophyseal portal system that connects to the anterior pituitary
Four F’s: Feeding, Fighting, Flighting, Sexual functioning
- in forebrain
What is the function of the basal ganglia
- smoothen movements
- help maintain postural stability
- coordinated muscle movement and relay information to the brain and spinal cord
- in forebrain
What is the function of the limbic system and what parts make up the limbic system
- controls emotion and memory
- septal nuclei, amygdala, hippocampus
- all in forebrain
What is the function of the septal nuclei
- involved with feelings of pleasure, pleasure seeking behavior, and addition
- in limbic system, which is in forebrain
What is the function of the amygdala
- controls fear (defense) and aggression
- in limbic system, which is in forebrain
What is the function of the hippocampus
- consolidates memories and communicates with other parts of the limbic system through and extension called the fornix
- learning and memory processing
- helps form long term memories
- in limbic system, which is in forebrain
What are the four parts of the cerebral cortex
- frontal
- parietal
- occipital
- temporal
- in the forebrain
- complex perceptual, cognitive, and behavioral processes
What is the function of the frontal lobe
- controls executive function
- impulse control
- long-term planning
- motor function
- speech production
- contains primary motor cortex
What is the function of the parietal lobe
- sensations of touch, pressure, temperature, and pain
- spatial processing
- orientation
- spacial manipulation
- map reading, orientation in 3D
- contains primary somatosensory cortex
What is the function of the occipital lobe
- controls visual processing
What is the function of the temporal lobe
- controls sound processing (auditory cortex)
- speech perception (Wernicke’s area)
- memory and emotion
- contains auditory cortex and Wernicke’s area