The enhanced efficiency in a synapse after brief rapid stimulation is called ________.

A) subliminal stimulation
B) synaptic degradation
C) long-term potentiation
D) priming

The enhanced efficiency in a synapse after brief rapid stimulation is called long-term potentiation (LTP). LTP is a process through which synapses strengthen as the result of increased activity between the neurons they connect. This process is essential for learning and memory formation. Subliminal stimulation refers to stimuli that are below the threshold of conscious awareness. Synaptic degradation refers to the weakening of the synaptic strength between two neurons. Priming refers to the phenomenon in which exposure to a stimulus influences response to a subsequent stimulus.