This paper describes a neural model of interval timing, which reproduces the duration discrimination experiments of Wearden, J.H., 1992, J. Exp. Psychol. 18, 134-144. The model comprises three layers of neural units. The units in the first layer represent clusters of neurons with probabilistic internal feedback that maintains self-sustained (short-term memory) activity for a random time. The un...

Behavioral, neuropsychological, and brain imaging research points to a dedicated system for processing number that is shared across development and across species. This foundational Approximate Number System (ANS) operates over multiple modalities, forming representations of the number of objects, sounds, or events in a scene. This system is imprecise and hence differs from exact counting. Evid...

idiopathic lobular panniculitis, sometimes called relapsing febrile nodular panniculitis or weber christian disease first desribed in 1892 by pfeifer, is the term used to describe an group of disease that present as subcutaneous inflammatory nodules and histologically display an inflammatory focus primarily within the fat lobules. weber-christian disease is the term applied to idiopatic cases o...

Secondary drop breakup due to shockwave disturbances was studied for the multimode breakup regime, emphasizing the tempera1 evolution of breakup. Measurements were carried out in a shock tube using pulsed shadowgraphy and holography to observe the mechanism and outcome of breakup. Test conditions involved liquid/gas density ratios greater than 500, Ohnersorge numbers less than 0.1 and Weber num...

From very early in life, humans can approximate the number and surface area of objects in a scene. The ability to discriminate between 2 approximate quantities, whether number or area, critically depends on the ratio between the quantities, with the most difficult ratio that a participant can reliably discriminate known as the Weber fraction. While developmental improvements in the Weber fracti...

We give a new and hopefully more easily understandable structural proof for the decomposition of a k-valued transducer into k unambiguous functional transducers, a result established by A. Weber. The number of states of the transducers given by our construction outperforms Weber’s one by one exponential. Moreover, we solve a problem left open by Weber, the decomposition of a bounded length-degr...