Real-Time Analysis of EEG Indexes of Alertness, Cognition, and Memory Acquired With a Wireless EEG Headset

Berka, Chris; Levendowski, Daniel J.; Cvetinovic, Milenko M.; Petrović, Miroslav; Davis, Gene; Lumicao, Michelle N.; Zivkovic, Vladimir T.; Popović, M.; Olmstead, Richard

doi:10.1207/s15327590ijhc1702_3

Cited by 335 publications

(218 citation statements)

References 32 publications

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“…These power changes were captured for different brain frequency bands, namely theta band (4-7 Hz), alpha band (8-13 Hz), beta band (14-29 Hz) and gamma band (30-47 Hz). Furthermore, in order to capture changes in the brain activity, associated with processes like workload, engagement and attention, a feature called workload index (WI) [9] was estimated per electrode as follows: WI = beta power theta power + alpha power…”

Section: Feature Extraction and Classificationmentioning

confidence: 99%

Electroencephalogram alterations during perception of pleasant and unpleasant odors

Yazdani

Kroupi

Vesin

et al. 2012

2012 Fourth International Workshop on Quality of Multimedia Experience

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The olfactory system enables humans and many animals to recognize and categorize different odors and can determine many behavioral and social reactions. For human beings, odor stimuli are highly associated with many processes such as emotions, attraction, mood, etc. One approach to understanding the olfaction is to monitor and analyze human brain activity during perception of odors. In this paper, we analyze the electroencephalogram (EEG) of five subjects during perception of unpleasant and pleasant odor stimuli. We identify the regions of the brain that are active during discrimination of unpleasant and pleasant odor stimuli. We also show that classification of EEG signals during perception of odors can reveal the pleasantness of the odor with relatively high accuracy.

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Section: Feature Extraction and Classificationmentioning

confidence: 99%

Electroencephalogram alterations during perception of pleasant and unpleasant odors

Yazdani

Kroupi

Vesin

et al. 2012

2012 Fourth International Workshop on Quality of Multimedia Experience

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“…In addition, the strategic and adversarial nature of a video game carries natural opportunities to explore higher-level cognitive measures such as comprehension of game-related narratives and social attribution to a computer-generated adversary. Video games evoke measurable alterations in attention and perceptual processes (Green & Bavelier 2003, 2006ab, 2007Castel et al 2005;Feng et al 2007), and the video game format is increasingly being used to acquire simultaneous behavioural and EEG observations in ecologically valid contexts, for example in visuomotor tracking (Smith et al 1999), air traffic control (Brookings et al 1996), and military command and control simulations (St John et al 2002Berka et al 2004). Recent results in human-computer interaction (von Ahn 2006) also point to the power of the game context to establish and to maintain motivation in tasks that otherwise might not seem engaging, to teach persons with developmental disorders (Golan & Baron-Cohen 2006), and to train executive functions (Thorell et al, 2009).…”

Section: Representative Resultsmentioning

confidence: 99%

Combining Computer Game-Based Behavioural Experiments With High-Density EEG and Infrared Gaze Tracking

Yoder

Belmonte

2010

JoVE

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Experimental paradigms are valuable insofar as the timing and other parameters of their stimuli are well specified and controlled, and insofar as they yield data relevant to the cognitive processing that occurs under ecologically valid conditions. These two goals often are at odds, since well controlled stimuli often are too repetitive to sustain subjects' motivation. Studies employing electroencephalography (EEG) are often especially sensitive to this dilemma between ecological validity and experimental control: attaining sufficient signal-to-noise in physiological averages demands large numbers of repeated trials within lengthy recording sessions, limiting the subject pool to individuals with the ability and patience to perform a set task over and over again. This constraint severely limits researchers' ability to investigate younger populations as well as clinical populations associated with heightened anxiety or attentional abnormalities. Even adult, non-clinical subjects may not be able to achieve their typical levels of performance or cognitive engagement: an unmotivated subject for whom an experimental task is little more than a chore is not the same, behaviourally, cognitively, or neurally, as a subject who is intrinsically motivated and engaged with the task. A growing body of literature demonstrates that embedding experiments within video games may provide a way between the horns of this dilemma between experimental control and ecological validity. The narrative of a game provides a more realistic context in which tasks occur, enhancing their ecological validity (Chaytor & Schmitter-Edgecombe, 2003). Moreover, this context provides motivation to complete tasks. In our game, subjects perform various missions to collect resources, fend off pirates, intercept communications or facilitate diplomatic relations. In so doing, they also perform an array of cognitive tasks, including a Posner attention-shifting paradigm (Posner, 1980), a go/no-go test of motor inhibition, a psychophysical motion coherence threshold task, the Embedded Figures Test (Witkin, 1950(Witkin, , 1954) and a theory-of-mind (Wimmer & Perner, 1983) task. The game software automatically registers game stimuli and subjects' actions and responses in a log file, and sends event codes to synchronise with physiological data recorders. Thus the game can be combined with physiological measures such as EEG or fMRI, and with moment-to-moment tracking of gaze. Gaze tracking can verify subjects' compliance with behavioural tasks (e.g. fixation) and overt attention to experimental stimuli, and also physiological arousal as reflected in pupil dilation (Bradley et al., 2008). At great enough sampling frequencies, gaze tracking may also help assess covert attention as reflected in microsaccades -eye movements that are too small to foveate a new object, but are as rapid in onset and have the same relationship between angular distance and peak velocity as do saccades that traverse greater distances. The distribution of directions of microsaccades co...

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“…Askerin muharebe şartlarındaki algısına dayalı performans ölçüleri olarak: 1) Tetikte olma durumu, 2) Tepki süresi, 3) Reaksiyon seçenekleri içerisinden doğru olanın seçilmesi, 4) Dikkat durumu ve 5) Yaşanan olayın tekrar hatırlanması sayılabilir. Savaş gemisinde komutanın göreviyle ilgili eğitiminde, tetikte olma, algı durumu ve hafıza konuları ile ilişkili indeks elde etmek üzere geliştirilmiş bir EEG sisteminde öğrenme, hafıza ve algıya dayalı başarılı sonuçlar alınmıştır [14]. Doğru ve yanlış tercihlerin anlaşılmasında değişen beyin sinyalleri ileri seviye eğitimlerin verilmesinde önemli bir girdi olabilecektir.…”

Section: Askerî Uygulamalarunclassified

Fizyolojik Sinyallerin Askerî Amaçlı Kullanılabilirliği: Elektroensefalografi ve Yakın Kızılaltı Spektroskopisi Örnekleri

Uşaklı¹

2018

Journal of Polytechnic

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Real-Time Analysis of EEG Indexes of Alertness, Cognition, and Memory Acquired With a Wireless EEG Headset

Cited by 335 publications

References 32 publications

Electroencephalogram alterations during perception of pleasant and unpleasant odors

Electroencephalogram alterations during perception of pleasant and unpleasant odors

Combining Computer Game-Based Behavioural Experiments With High-Density EEG and Infrared Gaze Tracking

Fizyolojik Sinyallerin Askerî Amaçlı Kullanılabilirliği: Elektroensefalografi ve Yakın Kızılaltı Spektroskopisi Örnekleri

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