Fig. 1
From: Heterosynaptic plasticity-induced modulation of synapses
Multiple types of plasticity in neural synapses. A A schematic illustration of plasticity induction with its homo- and heterosynaptic pathways. Homosynaptic LTP (blue) induced by tetanus of input is associated with heterosynaptic LTD (black). B Heterosynaptic plasticity induction by postsynaptic tetanus, evoked by depolarizing pulses without pre-synaptic stimulation. C Mexican-hat profile of plasticity shows LTP induction by tetanus + postsynaptic depolarization at a set of synapses associated with a weaker heterosynaptic LTP at adjacent inputs and heterosynaptic LTD at inputs farther away (from Turrigiano et al., 1998)