Janse C, Beek A, van Oorschot I, Van der Roest M
Mech Ageing Dev. 1986 Jul;35(2):179-83. doi: 10.1016/0047-6374(86)90008-4.
In the mollusc Lymnaea stagnalis recovery of the tentacle withdrawal reflex after peripheral nerve damage is delayed with age. Indications were obtained that this delay is due to impairment of recovery of central synaptic connections.