Browsing by Author "de Graaf, Tom A."

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Enhancing memory capacity by experimentally slowing theta frequency oscillations using combined EEG-tACS

Aktürk, Tuba; de Graaf, Tom A.; Güntekin, Bahar; Hanoğlu, Lütfü; Sack, Alexander T. (Nature Portfolio, 2022)

he coupling of gamma oscillation (similar to 40+ Hz) amplitude to the phase of ongoing theta (similar to 6 Hz) oscillations has been proposed to be directly relevant for memory performance. Current theories suggest that ...
Event-related EEG oscillatory responses elicited by dynamic facial expression

Aktürk, Tuba; de Graaf, Tom A.; Abra, Yasemin; Şahoğlu Göktaş, Sevilay; Özkan, Dilek; Kula, Aysun; Güntekin, Bahar (BMC, 2021)

Background Recognition of facial expressions (FEs) plays a crucial role in social interactions. Most studies on FE recognition use static (image) stimuli, even though real-life FEs are dynamic. FE processing is complex and ...
Oscillatory delta and theta frequencies differentially support multiple items encoding to optimize memory performance during the digit span task

Aktürk, Tuba; de Graaf, Tom A.; Erdal, Furkan; Sack, Alexander T.; Güntekin, Bahar (Academic Press Inc., 2022)

The human brain has limited storage capacity often challenging the encoding and recall of a long series of multiple items. Different encoding strategies are therefore employed to optimize performance in memory processes ...