For synapses, it's depression not death.

Bateup, Helen S; Sabatini, Bernardo L · Cell · 2010

editorial · Level V

Where this comes from

Abstract

Long-term depression (LTD) of synaptic strength is an activity-dependent process in neurons that may be important for learning and memory. Li et al. (2010) now reveal a new apoptosis-independent role for mitochondrial-activated caspases in LTD suggesting that neurons have co-opted the canonical cell death pathway to perform a specialized function at synapses.