Academic Journal
Prestimulus EEG alpha activity reflects temporal expectancy
| Τίτλος: | Prestimulus EEG alpha activity reflects temporal expectancy |
|---|---|
| Συγγραφείς: | Jae Jin Kim, Byoung-Kyong Min, Hae-Jeong Park, Jin Young Park, Joong Il Kim, Eun Joo Kim |
| Συνεισφορές: | Byoung-Kyong Min, Jin Young Park, Eun Joo Kim, Joong Il Kim, Jae-Jin Kim, Hae-Jeong Park, Kim, Jae Jin, Park, Jin Young, Park, Hae Jeong |
| Πηγή: | Neuroscience Letters. 438:270-274 |
| Στοιχεία εκδότη: | Elsevier BV, 2008. |
| Έτος έκδοσης: | 2008 |
| Θεματικοί όροι: | Adult, Male, 0301 basic medicine, Brain Mapping, Time Factors, Spectrum Analysis, CNV, Contingent Negative Variation, Alpha Rhythm, Top-down processing, Prestimulus alpha activity, Visual/physiology, Expectancy, 03 medical and health sciences, 0302 clinical medicine, Reaction Time/physiology, Contingent Negative Variation/physiology, Reaction Time, Evoked Potentials, Visual, Humans, Female, Evoked Potentials, Photic Stimulation |
| Περιγραφή: | Since prestimulus EEG alpha activity has recently been considered to convey prestimulus top-down processing, we investigated whether prestimulus alpha activity reflects temporal expectancy of upcoming stimulation even under the non-classical contingent negative variation (CNV) paradigm. EEG was recorded from 16 subjects performing a color and a shape discrimination task manipulated with constant and variable inter-stimulus interval (ISI) conditions. The power of oscillatory activity was investigated by convolving the EEG signals with Morlet wavelets. The constant ISI condition yielded significantly shorter reaction times than the variable ISI condition, indicating more efficient preparation for upcoming stimuli during the constant ISI. We found significantly higher prestimulus alpha activity in the constant ISI condition than in the variable ISI condition, but no significant CNV even in the constant ISI condition. Such a reflection of temporal expectancy in the prestimulus alpha activity corroborates that the prestimulus top-down mental state for preparing upcoming task-performance is considerably reflected in the prestimulus ongoing alpha activity. |
| Τύπος εγγράφου: | Article |
| Περιγραφή αρχείου: | 270~274 |
| Γλώσσα: | English |
| ISSN: | 0304-3940 |
| DOI: | 10.1016/j.neulet.2008.04.067 |
| Σύνδεσμος πρόσβασης: | https://pubmed.ncbi.nlm.nih.gov/18486342 http://www.sciencedirect.com/science/article/pii/S0304394008005417 https://www.sciencedirect.com/science/article/pii/S0304394008005417 http://europepmc.org/abstract/MED/18486342 https://koreauniv.pure.elsevier.com/en/publications/prestimulus-eeg-alpha-activity-reflects-temporal-expectancy https://yonsei.pure.elsevier.com/en/publications/prestimulus-eeg-alpha-activity-reflects-temporal-expectancy |
| Rights: | Elsevier TDM CC BY NC ND |
| Αριθμός Καταχώρησης: | edsair.doi.dedup.....d1b40a38d60385858adb4b3962f9a8a8 |
| Βάση Δεδομένων: | OpenAIRE |
| ISSN: | 03043940 |
|---|---|
| DOI: | 10.1016/j.neulet.2008.04.067 |