Microelectrode arrays (MEAs) are a promising new method for high throughput neuronal assays. These arrays permit non-invasive, detailed optical and multichannel electrophysiological interrogation of functional neuronal networks for drug development or eurotoxicity assessment. There has also been an effort by a number of groups to develop in vitro analogues of in vivo brain circuitry or physiological systems to serve as well-defined models of in vivo tissue. However, a key hurdle in these efforts has been the ability to define and constrain the directionality of pathways within these systems. This issue is particularly relevant during the recreation of in vivo brain architectures that communicate through defined pathways, often with specific directionality. In this paper, we demonstrate a line/gap topology that promotes the growth of axonal directionally between neurons that have been engineered into a living analogue of a feed-forward neural architecture.
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Last date updated on June, 2021