Effects of display medium and luminance contrast on memory performance and EEG response

Shieh, Kong-King; Chen, Mei-Hsiang; Wang, Ya-Whei

doi:10.1016/j.ergon.2005.01.012

Cited by 12 publications

(4 citation statements)

References 26 publications

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“…The percentage of suppression increases with an increase in illumination levels which results increase of alertness in the subject. Thus, change in the EEG spectra with change in illumination [4,6,7,9,14]. The response curve of percentage suppression of melatonin hormone in increase in amount of lux is shown in below Fig.…”

Section: Physiological Changes When Exposed To Bright Lightmentioning

confidence: 96%

Study on the Impact of Light on Human Physiology and Electroencephalogram

Medithe

Nelakuditi

2016

JBBBE

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The influence of light on Electroencephalogram seems to be more critical, when physician depends on its readings to diagnose subject brain disorder according to its level. Although, bright light brings various changes in human physiological variables. But, Neurophysiological changes for specific light level still remain unclear. Thereby, in the present study, the response of brain electrical activity towards various light levels has been classified and verified. The reasons for alteration in different physiological variables due to bright light which results change in the state of electroencephalographic recordings has been reviewed. Additionally, the effects of bright light towards Ocular artifacts are also put forward. A novel hypothesis has been made using subjective analysis and experimental analysis in low luminance or darkness. It is observed that a poor lighting condition affects both behavioral task and brain activity.

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Section: Physiological Changes When Exposed To Bright Lightmentioning

confidence: 96%

Study on the Impact of Light on Human Physiology and Electroencephalogram

Medithe

Nelakuditi

2016

JBBBE

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“…Zhu and Wu (1990) also stated an optimal luminance contrast for VDT was in the range of 1:7 to 1:10. Shieh, Chen, and Wang (2005) found that the effect of luminance contrast on subjective preference was not significant. Many studies (Mills & Weldon, 1986;Travis, Bowles, Seton, & Peppe, 1990;Huang, 2007) yielded similar results that luminance contrast was more important than chromaticity contrast in VDT ~erformance.…”

mentioning

confidence: 93%

“…As for subjective preference, research results were not consistent. Shieh, Chen, and Wang (2005) found that the effect of luminance contrast on subjective preference was not significant. Contrarily, Wang and Chen (2000) and Chen and Lin (2004) stated subjective preference increased with increase in luminance contrast.…”

mentioning

confidence: 93%

Effects of Ambient Illumination, Luminance Contrast, and Stimulus Type on Subjective Preference of VDT Target and Background Color Combinations

Shieh

Lai

2008

Percept Mot Skills

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This study investigated the effects of the target and background color combination on subjective preference, i.e., aesthetic appearance, legibility and visual comfort, of stimuli presented on a visual display terminal under various ambient illuminations, luminance contrasts, and stimulus types. Analysis showed the main effect of color combination was significant for the three dependent variables. Black-on-white and blue-on-white were the most preferred combinations, while turquoise-on-green and turquoise-on-red were the least preferred. A sign was rated better than text. The significant interaction between color combination and luminance contrast indicated that more preferred color combinations were rated better under higher luminance contrast, whereas less preferred color combinations had better ratings under lower luminance contrast.

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“…Uncomfortable symptoms arising from video display terminal (VDT) tasks may include visual fatigue (Bergqvist & Knave, 1994;Sheedy, 1992) and musculoskeletal complaints (Li & Buckle, 1999), and much research on VDT tasks has been reported. Questionnaires have been widely used to investigate psychological fatigue during VDT tasks (Dillon & Emurian, 1995;Dillon, Kleinman, Choi, & Bias, 2005;Duffy & Chan, 2002;Stüdeli & Menozzi, 2003), whereas other studies have gathered physiological signals by electroencephalography (Shieh, Chen, & Wang, 2005), electromyography (Balci & Aghazadeh, 2004;Murata, Uetake, Matsumoto, & Takasawa, 2003;Park, Kim, & Shin, 2000;Seghers, Jochen, & Spaepen, 2003), and critical flicker fusion (Chi & Lin, 1998;Takahashi et al, 2001) to measure physiological fatigue. Heart rate (HR) has been measured in VDT tasks at low load levels (Higuchi, Motohashi, Liu, Ahara, & Kaneko, 2003;Takahashi et al, 2001); however, the change in HR is not remarkable when it is compared with the high loading task like HR recovery after exhausted exercise (Du et al, 2005;Platisa, Mazic, Nestorovic, & Gal, 2008).…”

Section: Introductionmentioning

confidence: 99%

Multiscale entropy approach to physiological fatigue during long‐term Web browsing

Hung¹,

Jiang²

2009

Hum Ftrs & Erg Mfg Svc

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Physiological fatigue during long-term Web browsing was investigated by the entropy-based method. A noninvasive instrument was used to gather 8-hour continuous electrocardiography signals from subjects who were asked to answer the psychological fatigue questionnaire every 2 hours. These data were used to calculate the heart rate (HR), traditional sample entropy (SampEn), and multiscale entropy (MSE). HR decreased as the browsing task began, but increased slightly after 4.5 hours. The psychological fatigue score gradually increased, implying that more severe subjective fatigue was experienced as Web browsing proceeded. In contrast, the traditional SampEn first increased and then oscillated after 2.5 hours. The browsing time of 2.5 hours may be a clue to physiological fatigue. The MSE results showed that the cardiac dynamic systems of undergraduates and males were more complex than those of graduates and females, respectively. Thus, SampEn may have the potential for estimating physiological fatigue during long-term Web browsing. C 2009 Wiley Periodicals, Inc.

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Effects of display medium and luminance contrast on memory performance and EEG response

Cited by 12 publications

References 26 publications

Study on the Impact of Light on Human Physiology and Electroencephalogram

Study on the Impact of Light on Human Physiology and Electroencephalogram

Effects of Ambient Illumination, Luminance Contrast, and Stimulus Type on Subjective Preference of VDT Target and Background Color Combinations

Multiscale entropy approach to physiological fatigue during long‐term Web browsing

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