Which of the following concepts does the all-or-none law describe?
A) All dendrites must be hyperpolarized before a neuron fires.
B) All neurons in a nerve fire or none of them fires.
C) The size of an action potential does not depend on the amplitude of the stimulus that started it.
D) The frequency at which a neuron fires is independent of the intensity of the stimulus.
C
You might also like to view...
What is the most straightforward approach to promoting generalization? ___________
Fill in the blank(s) with correct word
Which of these best illustrates altruism?
a. Visiting the elderly to earn a scouting merit badge b. Donating blood during a community blood drive c. A veterinarian giving medical treatments to her clients' family pets d. A firefighter rescuing survivors from a building destroyed by a terrorist attack
Several studies have shown that individuals who later identify as homosexual begin showing gender nonconformity in behavior at age three or four. What does this suggest about the influences on sexual orientation?
A. Sexual orientation is solely determined by biology. B. Sexual orientation is influenced by early childhood experiences. C. Sexual orientation is influenced by adolescent sexual experiences. D. Sexual orientation is influenced by the prenatal environment.
Which of the following has NOT been found in regard to American children's use of the Internet?
A) Half of all 12 to 18 year olds go online daily. B) More than 80% of all 12 to 18 year olds go online. C) The most common reason teens go online is to communicate with friends. D) Internet usage benefits problem-solving skills.