RBM	Restricted Boltzmann Machine
FIM	Fisher Information Matrix
v	‘Visible stimulus’ pattern, the input to a neural sensory encoder
h	‘Hidden activation’ pattern of stimulus-driven binary neural activity (interpreted as spiking)
W	The weight matrix for an RBM mapping visible activations to hidden-unit drive
$B_h$	The biases on the hidden units for an RBM
$B_v$	The biases on the visible units for an RBM
$\varphi$	Parameters $\{W,B_h,B_v\}$ associated with an RBM model
E	‘Energy’, defined here as negative log-probability
H	‘Entropy’, in the Shannon sense
$E_{h,v}$	The log-probability of simultaneously observing stimulus v and neural pattern h
$H_{h|v}$	The entropy of the distribution of neural patterns h evoked by stimulus v
${\mathcal{V}}_E$	Set of input stimuli with similar energy (log-probability i.e., bitrate)
$T_c$	The critical temperature of an RBM interpreted as an Ising spin model
$\beta$	Inverse temperature