Complex sentence: The term "Flashbulb memory" suggests surprise, an indiscriminate illumination, and brevity; however flashbulb memories are only somewhat indiscriminate and are far from complete.
Split into simpler sentences: The term "Flashbulb memory" suggests surprise, an indiscriminate illumination, and brevity. Flashbulb memories, in actuality, are only somewhat indiscriminate and are far from complete.