Neuronal activities in the reward phase in primary and higher-order gustatory cortices of monkeys

Neuroscience Research
H IfukuH Ogawa

Abstract

We examined neuronal activities in the reward phase of a taste discrimination GO/NOGO task and the reversal from the primary (PGC; areas G, 3 and 1-2) and higher order gustatory cortices (HGC, PrCO and OFC) in the monkey. Sucrose was given as reward for both GO (lever pressing during LED) and NOGO responses when correct. Three ON responses, synchronous with sucrose onset at correct or LED offset at incorrect trials were found: C- and I- types increased discharges only at correct or incorrect trials, while C-I type changed discharges at both. Of the latter two classes were noted; Class I increased discharges at correct and decreased them at incorrect trials, and Class II increased discharges at both. C-type and Class I were most numerous in both PGC and HGC except for the OFC in which Class II responses predominated. I-type was rare. Onset latencies at correct and incorrect trials were significantly correlated in the HGC but not in the PGC. It was suggested that C-type responses represented the gustatory nature of reward, I-type neurons error signals, and that Class I of C-I type indicated the arrival or omission of the reward, and Class II anticipation of reward delivery.

References

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Citations

May 7, 2010·Journal of Neurophysiology·Michael C WiestMiguel A L Nicolelis
Sep 11, 2009·The Journal of Neuroscience : the Official Journal of the Society for Neuroscience·Christopher J MacDonaldMiguel A L Nicolelis
Feb 1, 2013·The Journal of Neuroscience : the Official Journal of the Society for Neuroscience·Chad L SamuelsenAlfredo Fontanini
May 5, 2012·Current Opinion in Neurobiology·Arianna MaffeiAlfredo Fontanini
Mar 31, 2015·Progress in Neurobiology·Edmund T Rolls
Oct 8, 2018·Primates; Journal of Primatology·Gregory P FratelloneLixing Sun

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