Phys Psychology Flashcards
What direction do afferent and efferent fibers transmit info?
afferent -to the CNS
efferent -from the CNS
What is physiological psychology?
the study of the essential biology of the mind
What does the somatic nervous system control?
voluntary movement of striated muscles
Which nervous system controls arousal?
sympathetic nervous system, part of autonomic NS
Which nervous system controls recuperation after arousal?
parasympathetic NS, part of autonomic NS
What are the four major areas of the hindbrain?
- medulla oblongata
- pons
- base reticular formation
- cerebellum
What does the medulla oblongata control?
breathing, heartbeat, and blood pressure
What does the reticular formation control?
alertness, sleep, thirst, and involuntary muscles such as the heart
What is considered the most evolutionarily conserved part of the brain?
the reticular formation
From anterior to posterior, what connects the brain to the spinal cord?
pons & cerebellum
reticular formation
medulla oblongata
What functions does the midbrain tectum serve?
visual and auditory reflexes and processing
superior & inferior colliculi
What functions does the midbrain tegmentum serve?
sleep, arousal, eye movements
contains nuclei of several cranial nerves
What are the three major areas of the midbrain?
- superior part of the reticular formation
- tectum (dorsal area)
- tegmentum (ventral area)
What are the three major components of the limbic system?
- hippocampus
- amygdala
- cingulate gyrus
What is apraxia?
inability to initiate and organize movement
What is an agnosia?
difficulty processing sensory information
Damage to what area of the brain leads to Broca’s aphasia?
anterior regions of the brain,
including (but not limited to) the left inferior frontal gyrus
Damage to what area of the brain leads to Wernicke’s aphasia?
posterior region of the brain,
part of the superior temporal gyrus
Damage to what region of the brain has been shown to cause hyperphagia in animal models?
ventromedial part of the hypothalamus
What is the axon hillock?
where the soma and axon connect
Where are synaptic vessels stored in a neuron?
terminal buttons
At resting potential, what is the internal charge of a neuron?
negative
In an EPSP, how does the charge inside the neuron change?
it becomes slightly more positive (pos ions enter the cell)
aka slightly depolarized
In an IPSP, how does the charge inside the neuron change?
becomes slightly more negative (pos ions exit the cell)
aka hyper-polarized
