Reinforcement learning of targeted movement (Chadderdon et al. 2012)

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Accession:144538
"Sensorimotor control has traditionally been considered from a control theory perspective, without relation to neurobiology. In contrast, here we utilized a spiking-neuron model of motor cortex and trained it to perform a simple movement task, which consisted of rotating a single-joint “forearm” to a target. Learning was based on a reinforcement mechanism analogous to that of the dopamine system. This provided a global reward or punishment signal in response to decreasing or increasing distance from hand to target, respectively. Output was partially driven by Poisson motor babbling, creating stochastic movements that could then be shaped by learning. The virtual forearm consisted of a single segment rotated around an elbow joint, controlled by flexor and extensor muscles. ..."
Reference:
1 . Chadderdon GL, Neymotin SA, Kerr CC, Lytton WW (2012) Reinforcement learning of targeted movement in a spiking neuronal model of motor cortex PLoS ONE 2012 7(10):e47251
Model Information (Click on a link to find other models with that property)
Model Type: Realistic Network;
Brain Region(s)/Organism: Neocortex;
Cell Type(s): Neocortex fast spiking (FS) interneuron; Neocortex spiking regular (RS) neuron; Neocortex spiking low threshold (LTS) neuron;
Channel(s):
Gap Junctions:
Receptor(s): GabaA; AMPA; NMDA;
Gene(s):
Transmitter(s): Dopamine; Gaba; Glutamate;
Simulation Environment: NEURON;
Model Concept(s): Simplified Models; Synaptic Plasticity; Long-term Synaptic Plasticity; Reinforcement Learning; Reward-modulated STDP;
Implementer(s): Neymotin, Sam [samn at neurosim.downstate.edu]; Chadderdon, George [gchadder3 at gmail.com];
Search NeuronDB for information about:  GabaA; AMPA; NMDA; Dopamine; Gaba; Glutamate;
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arm1d
README
drspk.mod *
infot.mod *
intf6_.mod *
intfsw.mod *
misc.mod *
nstim.mod *
stats.mod *
updown.mod *
vecst.mod *
arm.hoc
basestdp.hoc
col.hoc *
colors.hoc *
declist.hoc *
decmat.hoc *
decnqs.hoc *
decvec.hoc *
default.hoc *
drline.hoc *
filtutils.hoc *
geom.hoc
grvec.hoc *
hinton.hoc *
infot.hoc *
init.hoc
intfsw.hoc *
labels.hoc *
local.hoc *
misc.h *
mosinit.hoc
network.hoc
nload.hoc
nqs.hoc *
nqsnet.hoc *
nrnoc.hoc *
params.hoc
run.hoc
samutils.hoc *
sense.hoc *
setup.hoc *
sim.hoc
simctrl.hoc *
stats.hoc *
stim.hoc
syncode.hoc *
units.hoc *
xgetargs.hoc *
                            
// $Id: setup.hoc,v 1.25 2006/12/26 22:34:47 billl Exp $
// variables normally controlled by SIMCTRL


// load_file("setup.hoc")
load_file("stdgui.hoc")
show_panel=0
strdef simname, filename, output_file, datestr, uname, comment, section, osname
objref tmpfile,nil,graphItem,sfunc
sfunc = hoc_sf_  // from stdlib.hoc
proc chop () { sfunc.left($s1,sfunc.len($s1)-1) }

tmpfile = new File()
simname = "sim"      // helpful if running multiple simulations simultaneously
runnum = 1           // updated at end of run
system("uname -m",uname)  // keep track of type of machine for byte compatibility
chop(uname)
system("date +%y%b%d",datestr)
chop(datestr) // may prefer to downcase later
sprint(output_file,"data/%s.%02d",datestr,runnum)  // assumes a subdir called data
if (unix_mac_pc()==1) osname = "Linux" else if (unix_mac_pc()==2) { 
  osname = "Mac" } else if (unix_mac_pc()==3) osname = "PC"
printStep = 0.25 // time interval for saving to vector
graph_flag=0
batch_flag=1
xwindows = 0     // can still save but not look without xwindows

// load_file("nrnoc.hoc")

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