We investigate selective visual attention. What is the role of visual selective attention in face recognition? Is word recognition an automatic process? To answer these questions, we have conducted series of experiments which provided the following findings.

1) The Stroop dilution effect occurred when a color word was presented as a distracter but not when it was presented as a color carrier.
2) The magnitude of the Stroop effect decreased as display duration decreased.
3) A larger Stroop effect was obtained when the color word was presented at the attended location than when it was presented at an unattended location. The role of visual selective attention in various tasks is now being further examined.

We explore how emotion influences our cognitive processes of perception, attention, and memory. We have examined the effect of context in facial emotion recognition.

The role of visual attention in facial expression recognition and the influences of valence and arousal level on memory are currently being examined.

We are interested in stimulus-response compatibility effects and response selection. Research focuses on the role of polarity codes in response selection processes, especially when stimulus dimensions do not physically or conceptually overlap with response dimensions.

We have studied the role of polarity coding in the orthogonal stimulus-response compatibility effect, orthogonal Simon effect, MARC effect, SNARC effect, and SMARC effect. The role of polarity coding in response selection is now being further examined in various situations.

We investigate brain activities by using electroencephalography (EEG). We have adopted various EEG analysis methods including Event-related potential (ERP) and Time-Frequency analysis, Source localization, etc.

Recently, our analysis frame aims to deconvolution methods (e.g., RIDE) and machine learning (MVPA) to decode neural underpinnings with collaborator Dr. Gi-Yeul Bae. We usually use Support Vector Machine (SVM) and Linear Discriminant Analysis (LDA) to classify EEG data.