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HORLOGE BIOLOGIQUE [4 records]
Record 1 - internal organization data 2019-03-28
Record 1, English
Record 1, Subject field(s)
- Nervous System
Record 1, Main entry term, English
- suprachiasmatic nucleus
1, record 1, English, suprachiasmatic%20nucleus
correct
Record 1, Abbreviations, English
- SCN 2, record 1, English, SCN
correct
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
An ovoid, densely packed collection of small cells of the anterior hypothalamus, lying close to the midline in a shallow impression of the optic chiasm. 3, record 1, English, - suprachiasmatic%20nucleus
Record number: 1, Textual support number: 1 CONT
The suprachiasmatic nucleus (SCN) is stimulated by light throughout the day and inhibits the pineal gland from producing melatonin. 4, record 1, English, - suprachiasmatic%20nucleus
Record 1, Key term(s)
- supra-chiasmatic nucleus
Record 1, French
Record 1, Domaine(s)
- Système nerveux
Record 1, Main entry term, French
- noyau suprachiasmatique
1, record 1, French, noyau%20suprachiasmatique
correct, masculine noun
Record 1, Abbreviations, French
- NSC 2, record 1, French, NSC
correct, masculine noun
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Masse ovoïde de petites cellules de l’hypothalamus antérieur, localisée juste au dessus du chiasma optique. 3, record 1, French, - noyau%20suprachiasmatique
Record number: 1, Textual support number: 1 CONT
Chez l'être humain, le principal rouage de l'horloge biologique est le noyau suprachiasmatique, un ensemble de neurones situé à la base du cerveau, à l'intérieur de l'hypothalamus. 4, record 1, French, - noyau%20suprachiasmatique
Record 1, Key term(s)
- noyau supra-chiasmatique
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2017-04-26
Record 2, English
Record 2, Subject field(s)
- Mathematics
- Computer Graphics
Record 2, Main entry term, English
- phase locking
1, record 2, English, phase%20locking
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
- mode locking 2, record 2, English, mode%20locking
- frequency pulling 2, record 2, English, frequency%20pulling
Record 2, Textual support, English
Record number: 2, Textual support number: 1 CONT
Phase locking occurs when many individual oscillators shift from a state of collective chaos to beating together or resonating in harmony. 3, record 2, English, - phase%20locking
Record 2, French
Record 2, Domaine(s)
- Mathématiques
- Infographie
Record 2, Main entry term, French
- blocage de phase
1, record 2, French, blocage%20de%20phase
correct, masculine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
- verrouillage de phase 2, record 2, French, verrouillage%20de%20phase
correct, masculine noun
Record 2, Textual support, French
Record number: 2, Textual support number: 1 DEF
Phénomène de synchronisation qui apparaît lorsque de nombreux oscillateurs individuels d’un système dynamique produisent une oscillation collective. 2, record 2, French, - blocage%20de%20phase
Record number: 2, Textual support number: 1 CONT
Par exemple, notre horloge biologique a un cycle de vingt-cinq heures lorsqu'elle est complètement isolée de toute variation de lumière, de repas, etc. Dès qu'on l'expose à la lumière, elle est commandée par la journée de vingt-quatre heures et devient «bloquée en phase» sur cette fréquence. Mais il suffit d’un voyage transatlantique pour détruire ce blocage de phase. Nos propres cœurs battent par blocage de phase de cellules individuelles et leurs battements tendent à s’harmoniser après un certain temps passé en groupe fermé. 2, record 2, French, - blocage%20de%20phase
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 2015-03-27
Record 3, English
Record 3, Subject field(s)
- Nervous System
- Clinical Psychology
Record 3, Main entry term, English
- sleep-wake cycle
1, record 3, English, sleep%2Dwake%20cycle
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
Record 3, Textual support, English
Record number: 3, Textual support number: 1 DEF
The 24 hours daily sleep and wake pattern. 2, record 3, English, - sleep%2Dwake%20cycle
Record number: 3, Textual support number: 1 CONT
There is mounting evidence to support a role for the sleep–wake cycle and the endogenous circadian system in the pathogenesis of major psychiatric disorders. 3, record 3, English, - sleep%2Dwake%20cycle
Record 3, French
Record 3, Domaine(s)
- Système nerveux
- Psychologie clinique
Record 3, Main entry term, French
- cycle veille-sommeil
1, record 3, French, cycle%20veille%2Dsommeil
correct, masculine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
Record 3, Textual support, French
Record number: 3, Textual support number: 1 DEF
Alternance entre veille et sommeil dans une période de 24 heures. 2, record 3, French, - cycle%20veille%2Dsommeil
Record number: 3, Textual support number: 1 CONT
Les troubles du cycle veille-sommeil mènent à une discordance entre l'horaire de sommeil de l'individu et l'horaire de l'horloge biologique. Ces conflits se produisent suite à une variété de pressions externes ou d’habitudes de vie et mènent à de la fatigue, de médiocres performances au travail ou à l'école, et à un sommeil perturbé [...] 3, record 3, French, - cycle%20veille%2Dsommeil
Record 3, Spanish
Record 3, Textual support, Spanish
Record 4 - internal organization data 2003-11-28
Record 4, English
Record 4, Subject field(s)
- Plant Biology
Record 4, Main entry term, English
- phytochrome
1, record 4, English, phytochrome
correct
Record 4, Abbreviations, English
Record 4, Synonyms, English
Record 4, Textual support, English
Record number: 4, Textual support number: 1 DEF
A reversible pigment occurring in green plants that changes form in response to exposure to light and dark, permitting plants to measure the length of the dark period. 2, record 4, English, - phytochrome
Record number: 4, Textual support number: 1 CONT
Phytochrome, a pigment in plants is sensitive to two kinds of light: Red light and Far-red light. ... Phytochrome is made in the inactive form (Pr) but red (or white) light changes it to the active form. This is reversible by far-red light, or by a slow reversion to the inactive form if left in the dark. 3, record 4, English, - phytochrome
Record number: 4, Textual support number: 2 CONT
Phytochromes are involved in a number of light-related events, such as seasonal flowering, but are not considered hormones. 4, record 4, English, - phytochrome
Record 4, French
Record 4, Domaine(s)
- Biologie végétale
Record 4, Main entry term, French
- phytochrome
1, record 4, French, phytochrome
correct, masculine noun
Record 4, Abbreviations, French
Record 4, Synonyms, French
Record 4, Textual support, French
Record number: 4, Textual support number: 1 CONT
[...] les plantes utilisent un phytochrome(P) «c'est un pigment bleu-vert présent en faible quantité dans les tissus, surtout dans les régions à croissance rapide qui change en réponse avec le type de lumière» pour détecter la présence ou l'absence de la nuit, en fait, ce phytochrome est couplé à l'horloge biologique. 2, record 4, French, - phytochrome
Record number: 4, Textual support number: 2 CONT
Les botanistes supposèrent donc qu'il existait un pigment végétal que la lumière rouge orangé métamorphosait, et auquel la lumière infrarouge restituait son état initial. Ce pigment, découvert en 1952 et appelé phytochrome, est une protéine. C'est probablement grâce à lui que la plante «distingue» la nuit du jour. La plupart des sources lumineuses, notamment le Soleil, émettent principalement des rayons rouge orangé. Les plantes possèdent cependant d’autres éléments que le phytochrome, comme l'horloge biologique, leur permettant d’«évaluer» les durées. 3, record 4, French, - phytochrome
Record number: 4, Textual support number: 3 CONT
[...] le phytochrome [...] se trouve sous deux formes dans les végétaux : sous une forme active P735, mais instable, qui présente un maximum d’absorption de la lumière de longueur d’onde 735 nanomètres; [et sous] une forme inactive, le P660. 4, record 4, French, - phytochrome
Record 4, Spanish
Record 4, Campo(s) temático(s)
- Biología vegetal
Record 4, Main entry term, Spanish
- fitocromo
1, record 4, Spanish, fitocromo
correct, masculine noun
Record 4, Abbreviations, Spanish
Record 4, Synonyms, Spanish
Record 4, Textual support, Spanish
Record number: 4, Textual support number: 1 DEF
Pigmento vegetal que activado por la luz sustenta procesos naturales en las plantas. 1, record 4, Spanish, - fitocromo
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