A Classification Algorithm for Electroencephalography Signals by Self-Induced Emotional Stimuli

Iacoviello, Daniela; Petracca, Andrea; Spezialetti, Matteo; Placidi, Giuseppe

doi:10.1109/tcyb.2015.2498974

Cited by 45 publications

(21 citation statements)

References 40 publications

(42 reference statements)

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“…One of their findings for the most relevant frequency band is same as that of ours. Lacoviello et al [17] worked on same paradigm of self-induced emotions, but with recalling unpleasant odor for the feeling of disgust. They used an eight-channel EEG sensor and found classification accuracy using only one channel.…”

Section: Resultsmentioning

confidence: 99%

“…From the studies conducted in the domain of electroencephalography (EEG) based brain computer interfaces (BCI), it has been found that human emotions can be identified and discriminated from each other using EEG brain signals [12,13,14,15,16,17]. Although at the same time, we observe that studies on neural correlations of memory-evoked emotions, specifically fear, are scant.…”

Section: Introductionmentioning

confidence: 87%

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Investigating EEG Patterns for Dual-Stimuli Induced Human Fear Emotional State

Masood

Farooq

2019

Sensors

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Most electroencephalography (EEG) based emotion recognition systems make use of videos and images as stimuli. Few used sounds, and even fewer studies were found involving self-induced emotions. Furthermore, most of the studies rely on single stimuli to evoke emotions. The question of “whether different stimuli for same emotion elicitation generate any subject-independent correlations” remains unanswered. This paper introduces a dual modality based emotion elicitation paradigm to investigate if emotions can be classified induced with different stimuli. A method has been proposed based on common spatial pattern (CSP) and linear discriminant analysis (LDA) to analyze human brain signals for fear emotions evoked with two different stimuli. Self-induced emotional imagery is one of the considered stimuli, while audio/video clips are used as the other stimuli. The method extracts features from the CSP algorithm and LDA performs classification. To investigate associated EEG correlations, a spectral analysis was performed. To further improve the performance, CSP was compared with other regularized techniques. Critical EEG channels are identified based on spatial filter weights. To the best of our knowledge, our work provides the first contribution for the assessment of EEG correlations in the case of self versus video induced emotions captured with a commercial grade EEG device.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 87%

Investigating EEG Patterns for Dual-Stimuli Induced Human Fear Emotional State

Masood

Farooq

2019

Sensors

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“…Many researchers have endeavored to develop algorithms to improve performance [22,23]. Channel selection methods have been widely used in MI based BCIs to enhance performance by removing task irrelevant and redundant channels [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Optimized Motor Imagery Paradigm Based on Imagining Chinese Characters Writing Movement

Qiu

Allison

Jin

et al. 2017

IEEE Trans. Neural Syst. Rehabil. Eng.

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-Background: motor imagery (MI) is a mental representation of motor behavior. The MI-based brain computer interfaces (BCIs) can provide communication for the physically impaired. The performance of MI-based BCI mainly depends on the subject's ability to self-modulate electroencephalogram signals. Proper training can help naive subjects learn to modulate brain activity proficiently. However, training subjects typically involve abstract motor tasks and are time-consuming. Methods: to improve the performance of naive subjects during motor imagery, a novel paradigm was presented that would guide naive subjects to modulate brain activity effectively. In this new paradigm, pictures of the left or right hand were used as cues for subjects to finish the motor imagery task. Fourteen healthy subjects (11 male, aged 22-25 years, and mean 23.6 ± 1.16) participated in this study. The task was to imagine writing a Chinese character. Specifically, subjects could imagine hand movements corresponding to the sequence of writing strokes in the Chinese character. This paradigm was meant to find an effective and familiar action for most Chinese people, to provide them with a specific, extensively practiced task and help them modulate brain activity. Results: results showed that the writing task paradigm yielded significantly better performance than the traditional arrow paradigm (p < 0.001). Questionnaire replies indicated that most subjects thought that the new paradigm was easier. Conclusion: the proposed new motor imagery paradigm could guide subjects to help them modulate brain activity effectively. Results showed that there were significant improvements using new paradigm, both in classification accuracy and usability.Index Terms-Motor imagery, brain-computer interface (BCI), CSP, paradigm.

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“…Emotions generate temporal patterns of brain activation [40], which can be identified and discriminated using the electroencephalogram (EEG) [41,42].…”

Section: Objective Measurement Of Emotional Response: Physiological Cmentioning

confidence: 99%

Effectiveness of the level of personal relevance of visual autobiographical stimuli in the induction of positive emotions in young and older adults: Study protocol for a randomized controlled trial.

Fernández

Ros

Sánchez-Reolid

et al. 2020

Preprint

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Background The ability to retrieve specific memories is a cognitive and emotional protective factor. Among the most effective techniques to generate autobiographical memories is the use of audio-visual stimuli, particularly images. Developing and improving techniques that facilitate the generation of such memories could be highly effective in the prevention of depressive symptoms, especially in the elderly population. The aim of the present study is to examine how the level of personal relevance of pictures as autobiographical memory cues to induce positive emotions may affect an individual’s emotion regulation.Methods The participants, 120 older adults aged 65 and over and 120 young adults aged between 18 and 35, of both sexes and without depressive symptoms, will be induced to a negative mood state by means of viewing a film clip. Following the negative mood induction, the participants will be shown positive images according to experimental group to which they were randomly assigned (high personal relevance: personal autobiographical photographs; medium personal relevance: pictures of favourite locations associated with specific positive autobiographical memories; and low personal relevance: positive images from the International Affective Picture System). We will analyse the differences in subjective (responses to questionnaires) and objectives measures (EEG signal, heart rate variability and electrodermal activity) between the groups before and after the induction of negative affect and following the recall of positive memories.Discussion The use of images associated with specific positive autobiographical memories may be an effective input for inducing positive mood states, which has potentially important implications for their use as a cognitive behavioural technique to treat emotional disorders, such as depression, which are highly prevalent among older adults.Trial registration: ClinicalTrials.gov, NCT04251104. Registered on 30 January 2020, https://clinicaltrials.gov/ct2/show/NCT04251104

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A Classification Algorithm for Electroencephalography Signals by Self-Induced Emotional Stimuli

Cited by 45 publications

References 40 publications

Investigating EEG Patterns for Dual-Stimuli Induced Human Fear Emotional State

Investigating EEG Patterns for Dual-Stimuli Induced Human Fear Emotional State

Optimized Motor Imagery Paradigm Based on Imagining Chinese Characters Writing Movement

Effectiveness of the level of personal relevance of visual autobiographical stimuli in the induction of positive emotions in young and older adults: Study protocol for a randomized controlled trial.

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