THE EFFECT OF STIMULUS NOVELTY ON SUBSEQUENT INFORMATION PROCESSING: AN ERP STUDY

Authors

  • Михаил Сергеевич Сопов St. Petersburg State University, 7–9 Universitetskaya nab., St. Petersburg, 199034, Russian Federation

Abstract

The present experiment was carried out in order to determine the effect of presided familiar or unfamiliar stimuli (primes) presentation on the visual information processing (target stimuli). We recorded event-related potentials (ERPs) in response to images of everyday objects (dog, hat, etc.) while participants performed classification task (animate or inanimate object). All these images were primed by two groups of unrelated primes: 1) images memorized by participants earlier (familiar primes), and 2) images, presented for the first time during experiment (unfamiliar primes). Targets were presented for 400
ms, primes — for 325 ms, with no interval between them. Results of the experiment showed decrease of N400 amplitudes for targets primed by unfamiliar images as compared to targets primed by familiar images. It is proposed that decrease of N400 amplitudes is connected with improvement of stimuliprocessing efficiency in identifi cation tasks (Gotts et al., 2012). We interpret obtained results through inhibitory impact of familiar stimuli on non-related memory traces. Refs 23. Figs 3.

Keywords:

stimuli novelty, priming, event related potentials, N400

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References

Литература

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Published

2015-06-15

How to Cite

Сопов, М. С. (2015). THE EFFECT OF STIMULUS NOVELTY ON SUBSEQUENT INFORMATION PROCESSING: AN ERP STUDY. Vestnik of Saint Petersburg University. Sociology, (2), 5–13. Retrieved from https://sociologyjournal.spbu.ru/article/view/1533

Issue

Section

GENERAL PSYCHOLOGY. PERSONAL PSYCHOLOGY. HISTORY OF PSYCHOLOGY