Title

Comparing Bilateral and Unilateral Olfactory Recognition: Neural Correlates of Odor Recognition via EEG

Alternative Title

양측 및 단측 후각 자극에 따른 향 인식 비교: EEG 기반 신경 상관성 연구

DGIST Authors

Yuyeon Lee ; Cheil Moon ; Han Kyoung Choe

Advisor

문제일

Co-Advisor(s)

Han Kyoung Choe

Issued Date

2026

Awarded Date

2026-08-01

Type

Thesis

Description

Olfaction, bilateral stimulation, unilateral stimulation, odor identification, EEG, ERSP, time-frequency analysis|후각, 양측 자극, 단측 자극, 향 식별, 향 지각, EEG, ERSP, 시간-주파수 분석

Table Of Contents

List of Contents

Abstract i
List of contents ii
List of tables iv
List of figures iv

Ⅰ. Introduction 1

Ⅱ. Materials and Methods
2.1 Participants 4
2.2 Olfactory Stimuli 5
2.3 Olfactometer Setup and Odor Delivery 7
2.3.1 Design of Odor Delivery to Both Nostrils 7
2.3.2 Direct Delivery of Olfactory Stimuli to the Participant’s Nostrils 9
2.4 Experimental Design and Procedure 11
2.5 Behavioral Tasks 12
2.5.1 Odor Perception Survey 13
2.5.2 Odor Identification Survey 14
2.5.3 Odor Quality Descriptor Survey 14
2.6 EEG Recording Procedure 15
2.7 EEG Preprocessing 17
2.8 Time–Frequency Analysis 18
2.9 Statistical Analysis 19

Ⅲ. Results
3.1 Odor Perception Ratings Across Stimulation Directions 21
3.2 Effects of Stimulation Direction on Odor Identification Accuracy 25
3.3 Odor Descriptor Ratings Across Stimulation Directions 27
3.4 EEG Oscillatory Responses to Unilateral and Bilateral Stimulation 29
3.5 Relationship Between Behavioral Measures and EEG Oscillatory Activity 33

Ⅳ. Discussion
4.1 Behavioral Effects of Stimulus Directionality on Odor Perception 35
4.2 Interpretation of Identification Accuracy Differences 37
4.3 Neural Oscillatory Mechanisms Underlying Directional Olfactory Processing 39
4.4 Integration of Behavioral and EEG Findings 40
4.5 Limitations of the Study and Future Directions 42

Ⅴ. Conclusion 45

Ⅵ. Reference 46

Ⅶ. Summary （국문요약） 48

URI

https://scholar.dgist.ac.kr/handle/20.500.11750/60766
http://dgist.dcollection.net/common/orgView/200001014785

DOI

10.22677/THESIS.200001014785

Degree

Master

Department

Department of Brain Sciences

Publisher

DGIST

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