AP AP Psychology & Human Behavior 2

Question 1

Which neurotransmitter is most directly associated with the brain's reward pathway and is implicated in motivation, pleasure, and certain movement disorders?

Accepted Answer

Dopamine

Answer

Dopamine is central to the mesolimbic reward pathway; deficits are linked to Parkinson's disease, while surpluses are associated with schizophrenia.

Question 2

The brain structure most responsible for regulating hunger, thirst, body temperature, and the sleep-wake cycle is the:

Accepted Answer

Hypothalamus

Answer

The hypothalamus is the brain's homeostatic regulator, controlling vital drives such as hunger, thirst, and temperature to maintain internal balance.

Question 3

Absolute threshold is defined as the minimum stimulation needed to detect a particular stimulus:

Accepted Answer

50% of the time it is presented

Answer

By convention, the absolute threshold is the stimulus intensity detected exactly 50% of the time across repeated trials.

Question 4

According to the Young-Helmholtz trichromatic theory of color vision, the eye contains three types of cone receptors sensitive to:

Accepted Answer

Red, green, and blue wavelengths

Answer

Trichromatic theory proposes three cone types — sensitive to red, green, and blue light — whose combined signals produce the full range of color perception.

Question 5

Which part of the neuron receives incoming chemical signals from neighboring neurons?

Accepted Answer

Dendrites

Answer

Dendrites are the branching extensions of a neuron that receive neurotransmitter signals at synapses from other neurons.

AP - Advanced Placement Test Practice Test

AP - Advanced Placement Test Practice Test

AP AP Psychology & Human Behavior 2