Circadian rhythm in the blind

Hollwich, F; Dieckhues, B

doi:10.1080/09291017109359272

Cited by 15 publications

(10 citation statements)

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“…Taken together, the ipRGC non-visual pathway (sensitive particularly to blue light) seems to serve as a crucial role in the entrainment of the circadian rhythm (Legates, Fernandez, and Hattar 2014). This concept dates back to Hollwich's original postulation about the existence of a non-visual pathway involved in the synchronisation of the circadian rhythm (Hollwich and Dieckhues 1971).…”

Section: Discussionmentioning

confidence: 98%

Blue light aids in coping with the post-lunch dip: an EEG study

Baek

Min

2015

Ergonomics

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The 'post-lunch dip' is a commonly experienced period of drowsiness in the afternoon hours. If this inevitable period can be disrupted by an environmental cue, the result will be enhanced workplace performance. Because blue light is known to be a critical cue for entraining biological rhythms, we investigated whether blue light illumination can be a practical strategy for coping with the post-lunch dip. Twenty healthy participants underwent a continuous performance test, during which the electroencephalogram (EEG) was recorded under four different illumination conditions: dark ( < 0.3 lx), 33% blue-enriched light, 66% blue-enriched light and white polychromatic light. As a result, exposure to blue-enriched light during the post-lunch dip period significantly reduced the EEG alpha activity, and increased task performance. Since desynchronisation of alpha activity reflects enhancement of vigilance, our findings imply that blue light might disrupt the post-lunch dip. Subsequent exploration of illumination parameters will be beneficial for possible chronobiological and ergonomic applications.

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Section: Discussionmentioning

confidence: 98%

Blue light aids in coping with the post-lunch dip: an EEG study

Baek

Min

2015

Ergonomics

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“…32 They found abnormalities in a wide variety of biochemical measurements In totally blind subjects (n=220) compared with those with severely Impaired vision (n=140) and sighted subjects (n=50). These changes Included reduced serum levels of glucose, protein, Cortisol, sodium, and raised levels of creatinine and potassium which were mirrored In urinary analysis.…”

Section: The Effect Of Visual Impairment On Circadian Entrainmentmentioning

confidence: 97%

“…Abnormal hormonal patterns have been reported in some visually Impaired patients for more than five decades. In the 1940s, Remler recognized that some blind patients had normal 24-hour rhythms whereas some had Inverted rhythms In rectal temperature, heart rate, blood pressure, and urinary excretion (1948 31 cited In Hollwich and Dleckhues 32 ). Subsequently, Orth and Island, 33 Kreiger and Rizzo, 34 Bodenheimer et al, 35 and D'Allessandro et al 36 all found Irregularities In the plasma profiles of corticosteroid production In a majority of blind subjects.…”

Section: The Effect Of Visual Impairment On Circadian Entrainmentmentioning

confidence: 99%

Visual Impairment and Circadian Rhythm Sleep Disorders

Lockley

Arendt

Skene

2013

Encyclopedia of Sleep

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“…It is notable that the prevalence of “legal” blindness increases sharply with age, and that approximately half of all the blind people are 65 years of age or older 195 . This information appears most relevant to sleep disorders and biologic rhythm dysfunction, in view of evidence that sleep disorders are very common and significantly incapacitating in the blind community 186 and that blind people have abnormalities in their circadian rhythms 60,134,156,168,174,185,204,248 …”

Section: Biologic Rhythms and Sleep/wake Function In The Agedmentioning

confidence: 99%