Brains are amazing. Our lab demonstrates that single human layer 2/3 neurons can compute the XOR operation. Never seen before in any neuron in any other species. Out now in @sciencemagazine. Congrats Albert, Tim @mattlark @YiotaPoirazi & COhttps://science.sciencemag.org/content/367/6473/83 …
-
-
:) But this is *real* stuff, real neurons, real currents and real spikes, so nobody can complain that Albert "simply made up" something in a model by tuning parameters etc :)
-
Yes, real neurons are cool :-) Not to be too pedantic, but the XOR result is from a model (albeit using parameters from the experiments).
Kraj razgovora
Novi razgovor -
-
-
One major difference in this case is that the XOR is solved by a single dendritic transfer function. Another is that targeted inhibition can cause excitation. Stay tuned for more about the power of this transfer function!
-
Ah ok, thanks! As I understand Fig 3G, the apical tuft computes an XOR of ANDS, and the basal portion acts as a more standard 2-layer NN (which of course, can also compute XOR). The apical transfer function does indeed look interesting, so I look forward to more details!
- Još 1 odgovor
Novi razgovor -
-
-
There's also this from Fromhertz and Gaede (1993): https://link.springer.com/article/10.1007/BF00203130 … which predicts a few mechanisms that would let a neuron do XOR.
Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi
-
-
-
". dCaAP . observed in human L2/3 neurons have not been described in the cortical neurons of other mammalian species." If mice had this dCaAP, probably someone would have noticed. But might other primates have dCaAP in L2/3?
Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi
-
Čini se da učitavanje traje već neko vrijeme.
Twitter je možda preopterećen ili ima kratkotrajnih poteškoća u radu. Pokušajte ponovno ili potražite dodatne informacije u odjeljku Status Twittera.