Which of these is NOT a characteristic of a healthy synapse?

A healthy synapse is characterized by dynamic and flexible properties that enable it to adapt and change in response to learning and experience. This adaptability is crucial for processes such as neuroplasticity, where synapses strengthen or weaken over time based on usage, ultimately affecting learning and memory.

While the characteristics of a well-insulated synapse and efficient message transmission contribute positively to neural communication, stability and a lack of change would contradict the essence of a healthy synapse. Synapses need to be able to modify their connections to support cognitive functions, making adaptability a vital quality. Therefore, a stable and unchanging synapse does not align with the characteristics necessary for optimal brain function and communication.