Analysis of human brain responses to visual and audio stimuli based on EEG evoked potentials
Fragment książki (Rozdział w monografii)
MNiSW
20
Poziom I
| Status: | |
| Autorzy: | Plechawska-Wójcik Małgorzata, Tokovarov Mikhail, Mitaszka Mateusz, Pudło Przemysław |
| Dyscypliny: | |
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| Wersja dokumentu: | Drukowana | Elektroniczna |
| Arkusze wydawnicze: | 1 |
| Język: | angielski |
| Strony: | 102 - 118 |
| Efekt badań statutowych | NIE |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | TAK |
| Licencja: | |
| Sposób udostępnienia: | Witryna wydawcy |
| Wersja tekstu: | Ostateczna wersja opublikowana |
| Czas opublikowania: | W momencie opublikowania |
| Data opublikowania w OA: | 7 grudnia 2020 |
| Abstrakty: | angielski |
| The aim of the paper is to perform comparative analysis of the human responses to visual and auditory stimuli. The human brain response latencies were measured and compared. The analysis was based on nineteen EEG electrodes. The presented case study is a preliminary study conducted to assess the measurement and analysis procedure, perform a preliminary selection of parameters and verify the hardware configuration. The paper verifies the hypothesis that the human response to visual stimuli is faster than to audio stimuli. The experiment was divided into two parts examining, correspondingly, the reaction to two types of stimuli: visual and auditory. The tool, called PsyTask was used in the experiment. Both parts included the following stages: pictorial description of the task to be solved by an examined person and the sequence of unordered trials. As for the visual part, a single trial included the demonstration of white background with one of five birds, whereas a single trial of the auditory part contained a record of separate birdsong. The trials were assessed in accordance withtheGo/Nogo paradigm. Regardingthe first part of the experiment, the following situation was concerned as a Go trial: the examined person clicked a left mouse button after the recognition of an owl in the presented picture, whereas a trial was considered as Nogo in case when the examined persondid not click the left mouse button upon recognition of the demonstrated picture or when the left mouse button was clicked after false recognition. During the data acquisition it was observed that multiple factors, e.g. eye-blinking, eyeball movement, etc., can cause artefacts in the EEG record. As a result of the experiment, the numbers of correct and false reactions to stimuli were collected, the reaction times were measured as well. Another result was the observation that the said stimuli caused the activation of occipital and parietal lobes. The answer tothe question placed in the abstract was obtained: shorter reaction times correspond to visual stimuli. |
