Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cortical credit assignment by Hebbian, neuromodulatory and inhibitory
  plasticity   The cortex learns to make associations between stimuli and spiking activity
which supports behaviour. It does this by adjusting synaptic weights. The
complexity of these transformations implies that synapses have to change
without access to the full error information, a problem typically referred to
as "credit-assignment". However, it remains unknown how the cortex solves this
problem. We propose that a combination of plasticity rules, 1) Hebbian, 2)
acetylcholine-dependent and 3) noradrenaline-dependent excitatory plasticity,
together with 4) inhibitory plasticity restoring E/I balance, effectively
solves the credit assignment problem. We derive conditions under-which a neuron
model can learn a number of associations approaching its theoretical capacity.
We confirm our predictions regarding acetylcholine-dependent and inhibitory
plasticity by reanalysing experimental data. Our work suggests that detailed
cortical E/I balance reduces the dimensionality of the problem of associating
inputs with outputs, thereby allowing imperfect "supervision" by
neuromodulatory systems to guide learning effectively.

27
The categories of this paper are: comp-gas
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph
14
The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
17
The categories of this paper are: q-fin
8
The categories of this paper are: hep-ex
0
The categories of this paper are: hep-ph
9
The categories of this paper are: nlin
13
The categories of this paper are: quant-ph
21
The categories of this paper are: adap-org