Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Correlated connectivity and the distribution of firing rates in the
  neocortex   Two recent experimental observations pose a challenge to many cortical
models. First, the activity in the auditory cortex is sparse, and firing rates
can be described by a lognormal distribution. Second, the distribution of
non-zero synaptic strengths between nearby cortical neurons can also be
described by a lognormal distribution. Here we use a simple model of cortical
activity to reconcile these observations. The model makes the experimentally
testable prediction that synaptic efficacies onto a given cortical neuron are
statistically correlated, i.e. it predicts that some neurons receive many more
strong connections than other neurons. We propose a simple Hebb-like learning
rule which gives rise to both lognormal firing rates and synaptic efficacies.
Our results represent a first step toward reconciling sparse activity and
sparse connectivity in cortical networks.

32
The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
1
The categories of this paper are: cs
12
The categories of this paper are: nucl-th
20
The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol