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A study on two new circuits to generate square/triangular waveforms are presented. Circuit-I consists of a CCII, a capacitor, an OTA and a voltage divider network. The frequency can be changed by changing the voltage division ratio or the time-constant and amplitude by a combination thereof. As an extension of this concept, in the proposed circuit-II a CCCII is used in place of CCII to get electronic...
This paper describes a synapse circuit that approximately implements the dynamics of the dopamine (DA) modulated synapse proposed by Izhikevich (2007). The dynamics of the model, based on ‘eligibility traces’ generated according to a spike-timing-dependent plasticity (STDP) rule, ensure that causal pre-/post- synaptic spiking activity in the time preceding the reward, signaled by DA, leads to strengthening...
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