Improved categorization of subtle facial expressions modulates Late Positive Potential

Pollux, Petra M.J.

doi:10.1016/j.neuroscience.2016.02.027

Cited by 10 publications

(9 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to manipulate task demand and avoid ceiling performance, emotions were morphed between neutral and emotional using the Morpheus Photomorphing Suite, creating ten intensity stages, labelled from 10% to 100%. Based on previous findings of improvements in expression recognition only at low intensities and a ceiling to performance increases beyond 50–60% ( Gao & Maurer , 2010 ; Pollux, Hall & Guo , 2014 ; Pollux , 2016 ) intensities of 70, 80 and 90% were removed whereas 100% was included to control for task comprehension, leaving a total of 84 images used in the study.…”

Section: Methodsmentioning

confidence: 99%

Lateral presentation of faces alters overall viewing strategy

Luke

Pollux

2016

PeerJ

View full text Add to dashboard Cite

Eye tracking has been used during face categorisation and identification tasks to identify perceptually salient facial features and infer underlying cognitive processes. However, viewing patterns are influenced by a variety of gaze biases, drawing fixations to the centre of a screen and horizontally to the left side of face images (left-gaze bias). In order to investigate potential interactions between gaze biases uniquely associated with facial expression processing, and those associated with screen location, face stimuli were presented in three possible screen positions to the left, right and centre. Comparisons of fixations between screen locations highlight a significant impact of the screen centre bias, pulling fixations towards the centre of the screen and modifying gaze biases generally observed during facial categorisation tasks. A left horizontal bias for fixations was found to be independent of screen position but interacting with screen centre bias, drawing fixations to the left hemi-face rather than just to the left of the screen. Implications for eye tracking studies utilising centrally presented faces are discussed.

show abstract

Section: Methodsmentioning

confidence: 99%

Lateral presentation of faces alters overall viewing strategy

Luke

Pollux

2016

PeerJ

View full text Add to dashboard Cite

show abstract

“…This line of research reported early ERPs, such as N1, N2 and P2 (Tanaka et al , 1999; Antal et al , 2000; Antal et al , 2001; Xiao et al , 2015). Other categorization tasks, such as the valence categorization of emotional pictures, facial feature categorization, object-animal categorization and implicit association tests based on stimuli categorization, have elicited P3 (Delaney-Busch et al , 2016; Schupp et al , 2014; Fleischhauer et al , 2014; Chen et al , 2006) or late positive potential (LPP) (Delaney-Busch et al , 2016; Schupp et al , 2014; Chen et al , 2006; DaSilva et al , 2016; Pollux, 2016).…”

Section: Introductionmentioning

confidence: 99%

Influence of aggregated ratings on purchase decisions: an event-related potential study

Shen

Shan

Luan

2018

EJM

View full text Add to dashboard Cite

Purpose In an online shopping environment, individual reviews and aggregated ratings are important anchors for consumers’ purchasing decisions. However, few studies have considered the influence of aggregated ratings on consumer decision-making, especially at the neural level. This study aims to bridge this gap by investigating the consumer decision-making mechanism based on aggregated ratings to uncover the underlying neural basis and psychological processing. Design/methodology/approach An event-related potential experiment was designed to acquire consumers’ electrophysiological records and behavioral data during their decision-making processes based on aggregated ratings. The authors speculate that during this process, review valence categorization (RVC) processing occurs, which is indicated by late positive potential (LPP) components. Findings Results show that LPP components were elicited successfully, and perceptual review valence can modulate its amplitudes (one-star [negative] and five-star [positive] ratings evoke larger LPP amplitudes than three-star [neutral] ratings). The electroencephalogram data indicate that consumer decision-making processes based on aggregated ratings include an RVC process, and behavioral data show that easier review valence perception makes the purchase decision-making easier. Originality/value This study enriches the extant literature on the impact of aggregated ratings on consumer decision-making. It helps understand how aggregated ratings affect consumers’ online shopping decisions, having significant management implications. Moreover, it shows that LPP components can be potentially used by researchers and companies to evaluate and analyze consumer emotion and categorization processing, serving as an important objective physiological indicator of consumer behavior.

show abstract

“…We also observed that herding choices elicited a larger LPP amplitude than anticonformity choices. A considerable number of studies have found that LPP component may reflect the neurophysiological mechanism of categorical processing (Chen et al, 2006; Schupp et al, 2014; daSilva et al, 2016; Delaney-Busch et al, 2016; Pollux, 2016), and the stimuli leading to better evaluation categorization will elicit an increased LPP amplitude (Chen et al, 2010; Wang et al, 2016; Jin et al, 2017). As people tend to believe what most others believe (Deutsch and Gerard, 1955; Chen et al, 2010; Shen et al, 2018), participants in this study were likely to evaluate an industrial zone with a high occupancy rate better and classify it as a categorization of better evaluation (compared with an industrial zone with a low occupancy rate), which was mirrored by a larger LPP amplitude.…”

Section: Discussionmentioning

confidence: 99%

The Neural Basis of Herding Decisions in Enterprise Clustering: An Event-Related Potential Study

et al. 2019

View full text Add to dashboard Cite

Herding behavior refers to the social phenomenon in which people are intensely influenced by the decisions and behaviors of others in the same group. Although several recent studies have explored the neural basis of herding decisions in people’s daily lives (e.g., consumption decisions), the neural processing of herding decisions underlying enterprise behavior is still unclear. To address this issue, this study extracted event-related potentials (ERPs) from electroencephalographic data when participants (i.e., top executives in real enterprises) performed a choice task in which they judged whether to let their enterprises settle in an industrial zone when the occupancy rate of the industrial zone was either low or high. The behavioral results showed that participants had a higher acceptance rate in the high occupancy rate condition than in the low one, suggesting the existence of herding tendency in top executives’ business decisions. The ERP results indicated that anticonformity choices induced a larger N2 amplitude than herding choices, demonstrating that participants might experience larger perceived risk and more decision conflict when they processed anticonformity choices. In contrast, we observed that herding choices induced a larger LPP amplitude than anticonformity choices, hinting that participants might experience better evaluation categorization and higher decision confidence when they processed herding choices. Based on these results, this study provides new insights into the neural basis of herding decisions made by top executives in business.

show abstract

Improved categorization of subtle facial expressions modulates Late Positive Potential

Cited by 10 publications

References 49 publications

Lateral presentation of faces alters overall viewing strategy

Lateral presentation of faces alters overall viewing strategy

Influence of aggregated ratings on purchase decisions: an event-related potential study

The Neural Basis of Herding Decisions in Enterprise Clustering: An Event-Related Potential Study

Contact Info

Product

Resources

About