Dr. Randal A. Koene是非营利科学基金会的首席执行官和创始人碳纤维as well as the neural interfaces company NeuraLink Co. Dr. Koene is Science Director of the 2045 Initiative and a scientific board member in several neurotechnology companies and organizations.
Dr. Koene is a neuroscientist with a focus on neural interfaces, neuroprostheses and the precise functional reconstruction of neural tissue, a multi‑disciplinary field known as(整个)大脑仿真。Koene’s work has emphasized the promotion of feasible technological solutions and “big‑picture” roadmapping aspects of the field. Activities since 1994 include science-curation such as bringing together experts and projects in cutting‑edge research and development that advance key portions of the field.
Randal Koene was Director of Analysis at the Silicon Valley nanotechnology company太平子分子(2010-2012)和神经工程部主任Tecnalia, the third largest private research organization in Europe (2008-2010). Dr. Koene founded the Neural Engineering Corporation (Massachusetts) and was a research professor at Boston University’s Center for Memory and Brain. Dr. Koene earned his Ph.D. in Computational Neuroscience at the Department of Psychology at McGill University, as well as an M.Sc. in Electrical Engineering with a specialization in Information Theory at Delft University of Technology. He is a core member of the University of Oxford working group that convened in 2007 to create the first roadmap toward whole brain emulation (a term Koene proposed in 2000). Dr. Koene’s professional expertise includes computational neuroscience, neural engineering, psychology, information theory, electrical engineering and physics.
与阿姆斯特丹VU大学合作,Koene博士领导了创建NETMORPH, a computational framework for the simulated morphological development of large‑scale high‑resolution neuroanatomically realistic neuronal circuitry.
Luke Muehlhauser: You were a participant in the 2007 workshop that led to FHI’sWhole Brain Emulation: A Roadmapreport. The report summarizes the participants’ views on several issues. Would you mind sharing your自己的estimates on some of the key questions from the report? In particular, at what level of detail do you think we’ll need to emulate a human brain to achieve WBE? (molecules, proteome, metabolome, electrophysiology, spiking neural network, etc.)
(By “WBE” I mean what the report calls success criterion 6a (“social role-fit emulation”), so as to set aside questions of consciousness and personal identity.)
Randal Koene:将您的问题主要基于2007年的报告将是有问题的。所有涉及的人几乎都达成共识,该报告并不构成“路线图”,因为它实际上并没有制定一个具体 /设计精良的理论计划,通过该计划,整个大脑仿真既可能又可行。2007年白皮书几乎完全关注结构数据获取,并且没有明确解决未知(“黑匣子”)系统中系统识别的问题。金宝博官方这个问题是有关“细节水平”等问题的基础。它立即迫使您考虑约束:什么是成功/令人满意的大脑仿真?
System identification (in small) is demonstrated by the neuroprosthetic work of Ted Berger. Taking that example and proof-of-principle, and applying it to the whole brain leads to a plan for decomposition into feasible parts. That’s what the actual roadmap is about.
I don’t know if you’ve encountered these two papers, but you might want to read and contrast with the 2007 report:
我认为WBE将涉及一系列不同级别的细节。例如,泰德·伯杰(Ted Berger)的工作在假体海马上已经显示出来,通常足以在神经尖峰的尖峰时序和模式下模仿。从功能上的角度来看,在该级别上的仿真很有可能捕获我们可感知的东西。考虑一下,突触前和突触后尖峰时间的差异是突触加强的基础(峰值依赖性增强),即长期记忆的编码。尖峰火车用于传达感觉输入(视觉,听觉等)。尖峰模式用于驱动肌肉组(运动,语音等)。
That said, a good emulation will probably require a deeper level of data acquisition for parameter estimation and possible also a deeper level of emulation in some cases, for example if we try to distinguish different types of synaptic receptors, and therefore how particular neurons can communicate with each other. I’m sure there are many other examples.
因此,我的直觉(严格来说是一个直觉!)是整个大脑仿真最终将涉及一系列工具,这些工具可以在一个级别上进行大多数数据获取,但是在某些地方或有时会更深入地潜入以挑选本地动态。
I think it is likely that we will need to acquire structure data at least at the level of current connectomics that enables identification of small axons/dendrites and synapses. I also think it is likely that we will need to carry out much electrophysiology, amounting to what is now called the Brain Activity Map (BAM).
我认为我们不太可能需要在整个大脑中绘制所有蛋白质或分子 - 尽管我们很可能会在大脑的代表性成分中彻底研究每个蛋白质或分子,以便学习如何最好地关联可测量的数量带有参数和动力学在仿真中表示。
(请不要将我的答案解释为“峰值神经网络”,因为这不是指数据采集级别,而是针对人工神经网络的某种类型的网络抽象。
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