How can spike-timing-dependent plasticity and homeostatic plasticity both be right? If spike-timing-dependent plasticity consistently tries to strengthen connections, but homeostatic plasticity consistently tries to weaken strong connections, wouldn't the two cancel each other out, causing no net plasticity to occur and consequently brains couldn't learn?
I have a pretty good understanding of spike-timing-dependent plasticity, but I just recently came across homeostatic plasticity and I'm trying to understand how both theories can be right. What am I misunderstanding? Can someone help me understand homeostatic plasticity better and how it applies to spike-timing-dependent plasticity?