Biological bases of behavior Flashcards
(85 cards)
What is the concept of nature vs nurture?
The debate regarding the relative contributions of genetic inheritance (nature) and environmental factors (nurture) to human development.
What does threshold refer to in neuroscience?
The level of stimulation required to trigger a neural impulse.
What is an action potential?
A brief electrical charge that travels down an axon, signaling the transmission of information.
What is depolarization?
The process during which the membrane potential becomes less negative, leading to the generation of an action potential.
What does all-or-nothing mean in the context of action potentials?
The principle that a neuron either fires completely or does not fire at all.
What is the refractory period?
The time following an action potential during which a neuron is unable to fire another action potential.
What is resting potential?
The state of a neuron when it is not actively sending a signal, typically around -70mV.
What is acetylcholine?
A neurotransmitter involved in muscle movement and memory.
What is dopamine?
A neurotransmitter associated with pleasure, reward, and motor control.
What is serotonin?
A neurotransmitter that contributes to mood regulation, sleep, and appetite.
What is norepinephrine?
A neurotransmitter involved in arousal and alertness.
What is GABA?
A neurotransmitter that inhibits neural activity, promoting relaxation and reducing anxiety.
What is glutamate?
The main excitatory neurotransmitter in the brain, involved in learning and memory.
What are endorphins?
Neurotransmitters that act as natural painkillers and are involved in pleasure.
What is substance P?
A neuropeptide involved in the transmission of pain signals.
What is the thalamus?
A brain structure that acts as a relay station for sensory information.
What is the function of the hypothalamus?
Regulates vital bodily functions, including temperature and hunger.
What role does the hippocampus play?
Involved in memory formation and spatial navigation.
What is the optic nerve?
The nerve that transmits visual information from the retina to the brain.
What does the pituitary gland do?
Secretes hormones that regulate various bodily functions.
What is the midbrain?
A part of the brain involved in vision, hearing, and motor control.
What is the pons?
A brain structure that connects different parts of the brain and regulates sleep.
What is the medulla?
Controls autonomic functions such as breathing and heart rate.