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A comment on Neuromorphic learning, working memory, and metaplasticity in nanowire networks.

Re:Neuromorphic learning, working memory, and metaplasticity... by dpflan on Monday April 24, 2023 @02:08PM (#35691065)
FTA: "A quintessential cognitive task used to measure human working memory is the n-back task. In this study, task variations inspired by the n-back task are implemented in a NWN device, and external feedback is applied to emulate brain-like supervised and reinforcement learning. NWNs are found to retain information in working memory to at least n = 7 steps back, remarkably similar to the originally proposed “seven plus or minus two” rule for human subjects"

Hm, so is the physical design of the device, having been modeled after human, imply the design of synapse networks is going to be limited as much as the human "device"? Are there other species with better n-back performance?

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Re:Neuromorphic learning, working memory, and metaplasticity... by sva_ on Monday April 24, 2023 @02:19PM (#35691192)
Pretty sure I read before that chimpanzee have higher 'n-back' capacity.
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Re:Neuromorphic learning, working memory, and metaplasticity... by NeuroCoder on Monday April 24, 2023 @04:55PM (#35693151)
We use this in my lab and I think you this is a lot more complex than better or worse on the task as a whole. Certain kind sof stimuli will interact with subject memory in different ways. So even if there's research saying another species is better or worse it probably depends on what is being recalled.
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Re:Neuromorphic learning, working memory, and metaplasticity... by dpflan on Monday April 24, 2023 @05:26PM (#35693499)
I think I was more thinking about the possible direct mapping of the physical device to the computational device implying that it may not be possible to make make a more intelligent device from a device base.

What is your lab doing? Are you mapping physical brains?

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Re:Neuromorphic learning, working memory, and metaplasticity... by NeuroCoder on Monday April 24, 2023 @06:57PM (#35694385)
We don't really do brain mapping in the sense that would apply to nanotechnology. The actual mechanism of working memory is pretty hard to establish in humans at this level.
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