서지현 교수
Jihyung Seo
포항공과대학교 인문사회학부 · 신경과학
연구실 소개
서지현 교수의 연구실은 인지조절과 주의 조절의 신경심리학적 기제를 중심으로, 특히 갈등 상황에서의 반응 조절이 어떻게 학습과 외부 자극에 의해 유도되는지를 탐구합니다. 주로 스토룹 태스크와 유사한 실험 설계를 통해 ‘항상성 비율 조절 효과’(proportion congruence effect)와 ‘항목 특이적 조절’(item-specific control)의 학습 기반 메커니즘을 분석하며, 이는 자동적이고도 반사적인 조절 메커니즘이 존재할 수 있음을 시사합니다. 연구는 특히 동시 부하 조건 하에서의 조절 효율성, 다양한 자극(예: 색상, 위치, 도형)이 어떻게 조절에 기여하는지를 실험적으로 검증합니다.
연구 현황
연구 성과 추이
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
주요 논문
15In this article, we assess an alternative account of a key experimental pattern thought to index top-down control. The list-wide proportion congruence effect is the well-documented pattern whereby the congruency effect (i.e., Stroop effect) is attenuated in lists containing mostly incongruent trials relative to lists containing mostly congruent trials. This pattern has typically been interpreted as a signature of a top-down control mechanism that modulates attention to the word dimension based o
Traditionally cognitive control is described as slow-acting, effortful, and strategic. Against this backdrop, the notion of "automatic control" is an oxymoron. However, recent findings indicate control also operates quickly with adjustments occurring outside awareness, leaving open the possibility that control could be automatic under certain conditions. Harnessing one such finding, the item-specific proportion congruent (ISPC) effect (i.e., reduction in congruency effect for mostly incongruent
Crump and Milliken (2009) reported a context-specific proportion congruence (CSPC) effect for inducer and diagnostic sets, the strongest evidence to date of context-specific control. Attempts to replicate/reproduce this evidence have failed, including Experiment 1. Using a picture-word Stroop task, we tackled the question of how to interpret such failures by testing the consistency hypothesis (Hutcheon & Spieler, 2017) and two novel hypotheses inspired by our theorizing about learning opportunit
Existing approaches in the literature on cognitive control in conflict tasks almost exclusively target the outcome of control (by comparing mean congruency effects) and not the processes that shape control. These approaches are limited in addressing a current theoretical issue-what contribution does learning make to adjustments in cognitive control? In the present study, we evaluated an alternative approach by reanalyzing existing data sets using generalized linear mixed models that enabled us t
Prior research has shown that various cues are exploited to reactively adjust attention, and such adjustments depend on learning associations between cues and proportion congruence. This raises the intriguing question of what will be learned when more than one cue is available, a question that has implications for understanding which cue(s) will dominate in guiding reactive adjustments. Evidence from a picture-word Stroop task demonstrated that item learning dominated over location learning in a
People learn to associate external (predictive) cues (e.g., pictures; colors) with the attentional demands (e.g., the likelihood of conflict) that tend to accompany these cues. Such learning supports item-specific control, the reactive triggering of control settings associated with predictive cues (e.g., high level of focus triggered by a cue predicting high attentional demands). Item-specific control is assumed to operate with a degree of automaticity that allows for efficient processing even i
Recent research has revealed that simple actions can have a profound effect on subsequent perception – people are faster to find a target that shares features with a previously acted on object even when those features are irrelevant to their task (the action effect). However, the majority of the evidence for this interaction between action and perception has come from manual response data. Therefore, it is unknown whether action affects early visual search processes, if it modulates post-attenti
Recent studies have shown that visual features that were previously associated with a high monetary reward attract visual attention, a finding referred to as <i>value-driven attentional capture</i>. Given the fact that a reward often follows an action, the present study examined how approach and avoidance movements made to achieve a reward might modulate value-driven attentional capture. Experiment 1 revealed that a color that was previously associated with a high reward was more likely to captu
When people are rejected by others, they typically feel an immediate sense of pain—referred to as social pain. Social pain is hypothesized to be the alarm response of a “quick and crude” ostracism detection system, a system that is highly sensitive to even minimal signs of exclusion. Physiological reactivity has been found to accompany this social pain, but it is unclear whether the physiological mechanism underlying the ostracism detection system is also “quick and crude.” To test whether physi
Recent research has revealed that action can have an influence on visual perception. For example, participants find targets more quickly in a visual search task when the target is associated with a feature they previously acted towards. However, all evidence for this phenomenon comes from manual response time data. Thus, it is theoretically possible that action's effect is not on perception but instead on post-perceptual response processes. Here for the first time we investigated if a prior acti
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