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Temporal Order Judgment of Monkey
원숭이의 시간 순서 판단 과제 수행 분석

DC Field Value Language
dc.contributor.advisor이춘길-
dc.contributor.author심진우-
dc.date.accessioned2017-07-19T12:21:16Z-
dc.date.available2017-07-19T12:21:16Z-
dc.date.issued2014-02-
dc.identifier.other000000018694-
dc.identifier.urihttps://hdl.handle.net/10371/134365-
dc.description학위논문 (석사)-- 서울대학교 대학원 : 심리학과, 2014. 2. 이춘길.-
dc.description.abstractThe aim of this study was to develop a temporal order judgment (TOJ) task for monkeys and to investigate monkeys performance. Two trained monkeys (Macaca Fascicularis) performed a two-alternative forced choice TOJ task in which the subject made a saccadic eye movement toward one of two Gabor stimuli. Two stimuli were presented in the left and right side of fixation with a temporal asynchrony of 0, 10, or 30ms. A few drops of fluid as reward was delivered when the subject made a saccadic eye movement to the earlier one of the two. For the asynchrony of zero, reward was delivered in randomly-chosen half of trials, regardless of the subjects choice. Analyses of behavioral data revealed following results. First, a significant difference in the mean reaction time between correct and incorrect trials was observed, but the pattern of difference across temporal asynchrony conditions was depended on subjects. Second, response bias and correct rate were correlated with each other, but the pattern and the strength of the relationship differed between two subjects. Third, strong correlation of biases was found between conditions when stimuli were presented asynchronously (i.e. correct answer exists.) or presented simultaneously (i.e. correct answer doesnt exists.). Fourth, when targets were presented simultaneously, animals choice was predictable with a logistic regression model, using reward history and previous choices as indicators. But the models differ between subjects. These results suggest that two monkeys used different strategies while performing the same TOJ task.-
dc.description.tableofcontents1. Introduction 1
1.1. Decision Model and Accumulation of Evidence 1
1.2. Latency of Neural Signal 3
1.3. Neural Latency and Decision 4
1.4. Temporal Order Judgment Task 5
2. Methods 7
2.1. Subjects 7
2.2. Animal Surgery 7
2.3. Head Post Implantation 8
2.4. Animal Training 9
2.4.1 Adaptation to Experimental Environment 9
2.4.2. Main Experiment Task 10
2.5. Experimental Setup 11
2.5.1. Stimulus Presentation 12
2.6. Eye Tracking Device 14
2.7. Calculation of Eye Position 14
2.8. Experimental Procedures 16
2.8.1. Trial Sequence 16
2.8.2. SOA Conditions 17
2.9. Analysis 18
2.9.1. Preprocessing 19
2.9.1.1. Procedures 19
2.9.1.2. Outliers 22
2.9.1.2.1. Filtering Invalid Cases 22
2.9.1.2.2. Behavioral Outlier 22
2.9.1.2.3. Invalid SOA 23
2.9.3. Curve Fitting 25
2.9.4. Reaction Time Comparison 26
2.9.5. Bias Comparison 27
2.9.6. Reward History Analysis 27
3. Results 29
3.1. Data Description and Curve Fitting 29
3.2. Reaction Time Comparison 33
3.3. Bias Comparison 39
3.4. Reward History Analysis 42
4. Discussion 47
4.1. Summary 47
4.2. SRT distribution 48
4.3. Bias as task strategy 49
4.4. Dependency on reward history 50
4.5. Application to cell recording experiment 51
5. Reference 52
6. 국문초록 5 6
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dc.formatapplication/pdf-
dc.format.extent2478200 bytes-
dc.format.mediumapplication/pdf-
dc.language.isoen-
dc.publisher서울대학교 대학원-
dc.subjectTemporal order judgment-
dc.subjectReward history-
dc.subjectResponse bias-
dc.subjectReaction time distribution-
dc.subjectNeural latency-
dc.subject.ddc150-
dc.titleTemporal Order Judgment of Monkey-
dc.title.alternative원숭이의 시간 순서 판단 과제 수행 분석-
dc.typeThesis-
dc.contributor.AlternativeAuthorJinwoo Sim-
dc.description.degreeMaster-
dc.citation.pagesvii,57-
dc.contributor.affiliation사회과학대학 심리학과-
dc.date.awarded2014-02-
Appears in Collections:
College of Social Sciences (사회과학대학)Dept. of Psychology (심리학과)Theses (Master's Degree_심리학과)
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