Bonzon Pierre
Department of Information Systems, Faculty of Economics, University of Lausanne, Lausanne, Switzerland.
Front Neurorobot. 2020 Dec 3;14:570358. doi: 10.3389/fnbot.2020.570358. eCollection 2020.
Living organisms have either innate or acquired mechanisms for reacting to percepts with an appropriate behavior e.g., by escaping from the source of a perception detected as threat, or conversely by approaching a target perceived as potential food. In the case of artifacts, such capabilities must be built in through either wired connections or software. The problem addressed here is to define a neural basis for such behaviors to be possibly learned by bio-inspired artifacts. Toward this end, a thought experiment involving an autonomous vehicle is first simulated as a random search. The stochastic decision tree that drives this behavior is then transformed into a plastic neuronal circuit. This leads the vehicle to adopt a deterministic behavior by learning and applying a causality rule just as a conscious human driver would do. From there, a principle of using synchronized multimodal perceptions in association with the Hebb principle of wiring together neuronal cells is induced. This overall framework is implemented as a virtual machine i.e., a concept widely used in software engineering. It is argued that such an interface situated at a meso-scale level between abstracted micro-circuits representing synaptic plasticity, on one hand, and that of the emergence of behaviors, on the other, allows for a strict delineation of successive levels of complexity. More specifically, isolating levels allows for simulating yet unknown processes of cognition independently of their underlying neurological grounding.
生物体具有先天或后天的机制,通过适当行为对感知做出反应,例如,逃离被检测为威胁的感知源,或者相反,接近被视为潜在食物的目标。对于人工制品而言,此类能力必须通过有线连接或软件来构建。这里要解决的问题是为受生物启发的人工制品可能学习到的此类行为定义一个神经基础。为此,首先将涉及自动驾驶车辆的思想实验模拟为随机搜索。然后将驱动这种行为的随机决策树转化为可塑性神经回路。这使得车辆通过学习并应用因果规则来采取确定性行为,就像有意识的人类驾驶员那样。由此,引出了一个将同步多模态感知与神经元细胞连接的赫布原理相结合的原则。这个整体框架被实现为一个虚拟机,即软件工程中广泛使用的一个概念。有人认为,这样一个位于中尺度水平的接口,一方面介于代表突触可塑性的抽象微电路之间,另一方面介于行为出现的微电路之间,允许对连续的复杂程度进行严格划分。更具体地说,隔离层次允许独立于其潜在的神经基础来模拟未知的认知过程。