Synaptic plasticity in cortical systems

Recent studies indicate that synapse addition and/or loss is associated wit h different types of learning. Other factors influencing synaptogenesis and synapse loss include neurotrophins, hormones, and the induction of long-te rm potentiation. An emerging view of synaptic plasticity suggests that loca l neurotrophin action and synaptically associated protein synthesis may pro mote synaptic remodelling and changes in receptor expression or activation.