Examination for Professional Practice of Psychology (EPPP) Practice Test

Participants in a research study are asked to tap in time with a metronome. Which area of the brain, if damaged, will lead to the most difficulty in continuing the same beat?

1. cerebellum

2. suprachiasmatic nucleus

3. cortex

4. hippocampus

The correct answer is: cerebellum

The cerebellum plays a crucial role in motor coordination and timing, making it essential for rhythmic tasks such as tapping in time with a metronome. Damage to this area can result in difficulties with fine motor control and the ability to maintain a consistent rhythm, which is critical for activities that require timing and precision. This includes problems with coordination as well as the ability to synchronize movements to an external auditory cue, like a metronome. The other areas mentioned have different primary functions. The suprachiasmatic nucleus is mainly involved in regulating circadian rhythms and is not directly related to rhythm and timing of motor activities. The cortex is involved in a wide range of higher cognitive functions, but it doesn't specialize in timing and coordination like the cerebellum does. The hippocampus is primarily associated with memory formation and spatial navigation, rather than the timing of movements. Overall, the cerebellum is the area where damage would most directly affect the ability to maintain a consistent beat while tapping along with a metronome.