Multiplexing rhythmic information by spike timing dependent plasticity.

摘要: Rhythmic activity has been associated with a wide range of cognitive processes including the encoding sensory information, navigation, transfer information and others. in brain also suggested to be used for multiplexing information. Multiplexing is ability transmit more than one signal via same channel. Here we focus on frequency division multiplexing, which different signals are transmitted bands. Recent work showed that spike-timing-dependent plasticity (STDP) can facilitate rhythmic downstream processing pathway. However, STDP known generate strong winner-take-all like competition between subgroups correlated synaptic inputs. This rhythmicity channels, induced by STDP, may prevent Thus, raising doubts whether consistent idea multiplexing. study explores across multiple if so, under what conditions. We address this question modelling study, investigating dynamics two populations synapsing onto neuron feed-forward manner. Each population was assumed exhibit activity, albeit band. Our theory reveals competitions limited, sense will not necessarily fully suppress each other. Furthermore, found parameters, network converged solution responded both rhythms. Yet, weights themselves did converge fixed point, rather remained dynamic. These findings imply support demonstrate how functionality (multiplexing information) retained face continuous remodeling all weights. The constraints types rules provide natural test our theory.