Design Based Research (DBR) is a new and still-emerging approach to research about design, learning, and allied areas. This article reports one designer’s experiences within a DBR project. Whereas most reports of DBR focus on the outcomes of the design itself, the current paper offers a hermeneutical perspective by focusing on the personal narrative of the designer. Using Edelson’s (2002) categ...

We examine the spiking axon as a communication channel. We develop a .rst principles channel model that encompasses the noise in the axon, which manifests itself as spike jitter, and the power consumption, which arises from the activity of the Na–K pump. This model enables us to examine the trade-o4 between the information rate and power consumption. Using parameters from the frog myelinated ax...

Biological phenomenon. Spike-timing dependent plasticity (STDP) in its narrow sense refers to the change in the synaptic strength as a result of electrically eliciting pairs of action potentials (‘spikes’) with a fixed time difference between the preand post-synaptic action potentials (Markram et al., 1997; Bi and Poo, 1998; Sjostrom et al., 2001). STDP is typically observed for synapses betwee...