Certified Brain Injury Specialist Practice Exam

Increased synapses within a grouping of neurons are associated with what outcome?

1. Slower neurotransmission

2. Greater speed of neurotransmission

3. Reduced efficiency of neuron communication

4. Decrease in neuron connections

The correct answer is: Greater speed of neurotransmission

Increased synapses within a grouping of neurons enhance the efficiency and speed of neurotransmission. When more synapses are present, there are additional pathways for signals to be transmitted between neurons, which can lead to quicker relay of information through the neural networks. This increased connectivity allows for greater parallel processing of information, ultimately facilitating faster communication between neurons. As synapses strengthen through repeated use—a principle known as synaptic plasticity—this can lead to improved sensory processing and cognitive function. Options pertaining to slower neurotransmission, reduced efficiency, or a decrease in neuron connections misunderstand the relationship between synaptic connections and neuronal communication. More synapses typically denote more robust communication, not hindered or chaotic signal relay.