Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The free energy of biomembrane and nerve excitation and the role of
  anesthetics   In the electromechanical theory of nerve stimulation, the nerve impulse
consists of a traveling region of solid membrane in a liquid environment.
Therefore, the free energy necessary to stimulate a pulse is directly related
to the free energy difference necessary to induce a phase transition in the
nerve membrane. It is a function of temperature and pressure, and it is
sensitively dependent on the presence of anesthetics which lower melting
transitions. We investigate the free energy difference of solid and liquid
membrane phases under the influence of anesthetics. We calculate
stimulus-response curves of electromechanical pulses and compare them to
measured stimulus-response profiles in lobster and earthworm axons. We also
compare them to stimulus-response experiments on human median nerve and frog
sciatic nerve published in the literature.

17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
12
The categories of this paper are: nucl-th
16
The categories of this paper are: stat
11
The categories of this paper are: hep-lat
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
7
The categories of this paper are: hep-th
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph
1
The categories of this paper are: cs
9
The categories of this paper are: nlin