Complex sentence: As a result of anterograde amnesia, Wearing repeatedly "wakes up" every day in 30-second intervals until his wife stops him, because his episodic memory is nonfunctional (so he does not consciously recall having woken up 30 seconds prior).
Split into simpler sentences: As a result of anterograde amnesia, Wearing repeatedly "wakes up" every day usually in 30-second intervals. His episodic memory is nonfunctional (so he does not consciously recall having woken up 30 seconds prior).