Neuronal communication involves two mechanisms: a chemical one and an electrical one. Explain how they combine to produce electro-chemical neuronal communication
What will be an ideal response?
The neural impulse, or the action potential, is a brief exchange in a neuron's electrical charge that moves along an axon. The action potential, an electrical mechanism, triggers the release of chemicals called neurotransmitters that diffuse across a synapse to communicate with other neurons. The neurotransmitters bind with receptors in the postsynaptic cell membrane, causing graded electrical potentials called postsynaptic potentials. Patterns of excitatory and inhibitory postsynaptic potentials combine to produce (or not produce) an action potential in the second cell.
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Bullying
a. is typically aimed at individuals who are most prepared to defend themselves. b. is a one-time event. c. is seldom reinforced by other bullies. d. can involve harm via words or actions.
Research with elderly people indicates that the five personality factors remain stable and consistent throughout the life span
Indicate whether the statement is true or false.
According to the empathy-altruism hypothesis, pure altruism
A) will occur only when the person suffering is close to the potential helper. B) will occur only if escape from the aversive helping situation is difficult. C) will occur when empathic concern is elicited, because such concern orients a person away from his or her own welfare and toward another's welfare. D) does not really exist, because it is incompatible with evolutionary theory.
The TOT phenomenon is __________.
A. the process of selectively noticing certain stimuli B. the uncomfortable state of being close to recalling information but not actually being able to recall it C. a technique that improves memory D. when one subconsciously substitutes one word for another (e.g., a malapropism)