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All for one but not one for all: How multiple number representations are recruited in one numerical task

✍ Scribed by Guilherme Wood; Hans-Christoph Nuerk; Korbinian Moeller; Barbara Geppert; Ralph Schnitker; Jochen Weber; Klaus Willmes

Book ID
113503119
Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
804 KB
Volume
1187
Category
Article
ISSN
0006-8993

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πŸ“œ SIMILAR VOLUMES

Saliva and serum samples were collected
Saliva and serum samples were collected from eight healthy volunteers every two hours during a 26-hour period. Melatonin concentrations were measured by radioimmunoassay after chloroform extraction using radioiodinated melatonin as a tracer. Five of the subjects had high serum melatonin levels at night (peak levels higher than 75 pg/ml); in three subjects the highest serum melatonin concentration was 20-40 pg/ml. All subjects had low levels (P <0.001, was obtained for all detectable value pairs (n= 73). The regression and correlation coefficients were almost equal for the peak values of melatonin and during the rising and descending phases of the secretion patterns. However, no significant correlation was found between low daytime salivary and serum concentrations when calculated separately. In the five high-secretors the melatonin levels in saliva reflected reliably the changes in serum, but in the three low-secretors the correlation between salivary and serum melatonin was not significant. The proportion of melatonin found in saliva decreased with increasing serum melatonin levels. Circadian rhythm parameters were estimated by single cosinor analysis. The acrophases did not differ significantly within a subject in the concomitant measurements of serum and salivary melatonin. The measurements of salivary melatonin levels seem valid for studies on melatonin rhythms, but the melatonin concentrations measured in saliva do not always consistently reflect the absolute concentrations in blood.
✍ Maija-Liisa Laakso; Tarja Porkka-Heiskanen; Aino Alila; Dag Stenberg; Gunnar Joh πŸ“‚ Article πŸ“… 1990 πŸ› John Wiley and Sons 🌐 English βš– 622 KB
ANNOUNCEMENTS: 4th Annual Meeting of the
ANNOUNCEMENTS: 4th Annual Meeting of the Association for Ocular Pharmacology and Therapeutics (AOPT) The Marriott, Irvine, CA, USA 28–31 January 1999, Keystone Symposia Ocular Cell & Molecular Biology (OCMB) Announces Dean Bok, Ph.D. as the winner of the first OCMB Prize, Keystone OCMB Symposium, 1999 Keystone Colorado 5–10 February 1999, Call for Abstracts and Registration Organizers: Steven E. Wilson and Joe Hollyfield Registration and Abstract Forms available from: Keystone Symposia on Molecular and Cellular Biology Drawer 1630 Silverthorn, Colorado 80498 Telephone: 800-253-0685 Fax: 970-262-1525 E-mail: [email protected], XIV International Congress of Eye Research Santa Fe, New Mexico 15–20 October 2000, XV International Congress of Eye Research (2002) Proposals for the International Congress of Eye Research meeting to be held in the year 2002 are now being accepted by the ISER Council. The Jules FranΓ§ois Prize of the Belgian Ophthalmological Societies 2000 The aim of the Jules FranΓ§ois Prize is to encourage scientific research in ophthalmology. The prize of 10.000 U.S. Dollars will be awarded to a young scientist who has made an important contribution to ophthalmology. Eligibility: All topics in the field of fundamental and/or clinical research in ophthalmology will be considered. The application should be sent jointly with a curriculum vitae, the list of all publications and 3 copies of the candidates' 10 most relevant publications. The candidate should not be older than 40 years by 31 December 1999. Mailing Address: Jules FranΓ§ois Foundation Secretary Prof. Dr. M. Hanssens Dienst Oogheelkunde De Pintelaan 185 B-9000 Gent, Belgium
πŸ“‚ Article πŸ“… 1998 πŸ› Elsevier Science 🌐 English βš– 235 KB