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Schizophrenia affects a wide range of cognitive functions. These deficits present during socioeconomic game play, such as the Ultimatum Game (UG), which combines decision-making with social interaction: participants make offers of money (proposer) or decide whether to accept offers or not (respon-der). Correct activation of neuronal bases has been reported in schizophrenic patients following a proposition of money, while the same networks were not activated in response to the offered amount of money. It isunclear, however, if abnormalities in the neural networks’ commitment supporting the anticipation of the stimulus for final social decision-making may explain this discrepancy between both experimental conditions.We compared schizophrenia patients (N=19) with healthy controls (N=24) during the UG task, computing EEG imaginary part of coherency (ImCoh). Fronto-occipital and temporal interhemispheric ImCoh in alpha (8-13Hz) and beta (14-30Hz) frequency bands was estimated to assess the strength of functional connectivity between these brain regions.In the responder condition, we found significant group differences in alpha band between frontal and occipital electrodes, starting 0.7 s before stimulus onset (p=0.043, corrected for multiple comparisons).In contrast, there was no significant group difference in the beta band. In the proposer condition, no difference in connectivity was found in either frequency band.These findings support the idea of a psychosis-related dysfunction of fronto-occipital cortical networks engaged in the anticipation of the proposition during the decision part of the game. In contrast, patients with schizophrenia may have preserved functional connectivity in the proposer condition, indicatingthat the timing of anticipation commitment plays a key role in adapted activation of neural bases related to human interaction in schizophrenia.