Table 1. Summary of the regressions of the nine STDP data sets regressed with the G-DHL rule.

The table indicates: the species and brain area from which the neurons have been taken (Hip: hippocampus; VisCtx: visual cortex; EntCtx: enthorinal cortex; Tec: Tectum); the reference where the data were published (Ref.); the parameters of the G-DHL selected model (i.e., the 2 or 3 parameters of the components of the model chosen by the model comparison technique); the type of pre- and post-synaptic neuron (Exc: excitatory; Inh: inhibitory); the taxonomy with which the STDP data set has been classified in Caporale and Dan [18] (C.&D. classes); our taxonomy proposed on the basis of the components found by the G-DHL regression. Our classes: ‘E’ and ‘I’ refer to the excitatory/inhibitory neurons involved, specifying the class, and the numbers refer to the subtypes within the class.

Species	Brain Area	Ref.	Component								Neurons		C.&D. classes	Our classes
			σpp	σnp	σpn	σnn	ηps	ηsp	ηns	ηsn	In	Out
Rat	Hip	[25]	+.73				-.02				Exc	Exc	A I	EE 1
Locust	Kenion	[71]					-.47		+.66		Exc	Exc	A I	EE 2
Rat	VisCtx	[72]						+.66	-.60		Exc	Exc	A I	EE 3
Rat	EntCtx	[73]						+.27	-.40		Exc	Exc	A I	EE 3
Rat	Hip	[74]						+.17	-.38		Exc	Exc	A II	EE 3
Tadpole	Tec	[76]						-.65	+.61		Exc	Inh	B I	EI 1
Rat	Hip	[77]		-.52	-.48	+.77					Inh	Exc	C II	IE 1
Rat	Hip	[78]		-.36	-.53	+.63					Inh	Exc	C II	IE 1
Rat	EntCtx	[79]		+.78	-.56						Inh	Inh	C III	II 1