title: A simultaneous procedure facilitates acquisition under an optimal interstimulus interval in artificial neural networks and rats.
abstract: In a computer simulation, a neural network first received a simultaneous procedure, where the interstimulus interval (ISI) was 0 time-steps (ts). Output activations were near zero under this procedure. The network then received a forward-delay procedure where the ISI was 8 ts. Output activations increased to the near-maximum level faster than those of a control network that first received an explicitly unpaired procedure. Comparable results were obtained with rats that first received trials where a retractable lever was presented for 3s concurrently with access to water. Low-lever pressing was observed under this procedure. The rats then received trials where the lever was followed 15s after by water. Lever pressing appeared faster than a control group that received the 15-s ISI after an explicitly unpaired procedure. The model used in the simulation explains these results as connection-weight increments that promote little output activations in a simultaneous procedure, but facilitate acquisition in an optimal ISI.
authors.affiliation: University of Guadalajara-CEIC, Francisco de Quevedo 180, Col. Arcos de Vallarta, Guadalajara, Jalisco 41130, Mexico. jburgos@cucba.udg.mx
authors.forename: José E
authors.initials: JE
authors.lastname: Burgos
authors.forename: Carlos
authors.initials: C
authors.lastname: Flores
authors.forename: Oscar
authors.initials: O
authors.lastname: García
authors.forename: Carlos
authors.initials: C
authors.lastname: Díaz
authors.forename: Yuria
authors.initials: Y
authors.lastname: Cruz
mesh_terms: D000818:Animals; D001245:Association Learning; D003214:Conditioning, Classical; D005260:Female; D008606:Mental Processes; D008959:Models, Neurological; D016571:Neural Networks, Computer; D051381:Rats; D017208:Rats, Wistar; D013998:Time Perception