scholarly journals A multifunctional warning signal behaves as an agonistic status signal in a poison frog

2015 ◽  
Vol 26 (2) ◽  
pp. 560-568 ◽  
Author(s):  
Laura R. Crothers ◽  
Molly E. Cummings
Keyword(s):  
Warning Signal ◽  
Poison Frog ◽  
Status Signal

Warning signal properties covary with toxicity but not testosterone or aggregate carotenoids in a poison frog

2016 ◽  
Vol 30 (4) ◽  
pp. 601-621 ◽  
Author(s):  
Laura Crothers ◽  
Ralph A. Saporito ◽  
Justin Yeager ◽  
Kathleen Lynch ◽  
Caitlin Friesen ◽  
...  
Keyword(s):  
Warning Signal ◽  
Poison Frog

scholarly journals Opioid availability statistics from the International Narcotics Control Board do not reflect the medical use of opioids: comparison with sales data from Scandinavia

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Emmanuel Bäckryd ◽  
Markus Heilig ◽  
Mikael Hoffmann
Keyword(s):  
Opioid Analgesics ◽  
Warning Signal ◽  
Control Board ◽  
Opioid Use ◽  
Opioid Prescription ◽  
Sales Data ◽  
Narcotics Control ◽  
Addiction Risk ◽  
The Usa ◽  
Prescription Rates

Abstract Objectives Opioid analgesics are essential in clinical practice, but their excessive use is associated with addiction risk. Increases in opioid prescription rates have fuelled an epidemic of opioid addiction in the USA, making statistics on medical opioid use a critical warning signal. A dramatic 150% increase in Swedish opioid access 2001–2013 was recently reported based on data from the International Narcotics Control Board (INCB; Berterame et al. 2016) in conflict with other studies of opioid use in the Nordic countries. This article aims to analyse to what degree published INCB statistics on opioids in Scandinavia (Denmark, Norway and Sweden) reflect actual medical use and study the methodological reasons for putative discrepancies. Methods Data on aggregated total national sales of opioids for the whole population, including hospitals, were collected from the Swedish e-Health Authority. Total sales data for Denmark and drugs dispensed at pharmacies in Norway are publicly available through the relevant authorities’ websites. Results INCB opioid statistics during the period 2001–2013 were markedly inconsistent with sales data from Scandinavia, calling the reliability of INCB data into question. INCB-data were flawed by (a) over-representing the volume of fentanyl, (b) under-reporting of codeine, and (c) by not including tramadol. Conclusions Opioid availability, as expressed by INCB statistics, does not reflect medical opioid use. It is crucial to underline that INCB statistics are based on the manual compilation of national production, import and export data from manufacturers and drug companies. This is not the same amount that is prescribed and consumed within the health care system. Moreover, there are methodological problems in the INCB reports, in particular concerning fentanyl, codeine and tramadol. We suggest that INCB should carefully review the quality of their data on medical opioids.

scholarly journals Transfer effects in auditory temporal preparation occur using an unfilled but not filled foreperiod

2021 ◽  
pp. 174702182199545
Author(s):  
Emily M Crowe ◽  
Sander A Los ◽  
Louise Schindler ◽  
Christopher Kent
Keyword(s):  
Sensory Modality ◽  
Warning Signal ◽  
Convincing Evidence ◽  
Transfer Effects ◽  
Temporal Preparation ◽  
Memory Traces ◽  
Weak Evidence ◽  
Current Block ◽  
Visual Domain ◽  
Multiple Trace Theory

How quickly participants respond to a “go” after a “warning” signal is partly determined by the time between the two signals (the foreperiod) and the distribution of foreperiods. According to Multiple Trace Theory of Temporal Preparation (MTP), participants use memory traces of previous foreperiods to prepare for the upcoming go signal. If the processes underlying temporal preparation reflect general encoding and memory principles, transfer effects (the carryover effect of a previous block’s distribution of foreperiods to the current block) should be observed regardless of the sensory modality in which signals are presented. Despite convincing evidence for transfer effects in the visual domain, only weak evidence for transfer effects has been documented in the auditory domain. Three experiments were conducted to examine whether such differences in results are due to the modality of the stimulus or other procedural factors. In each experiment, two groups of participants were exposed to different foreperiod distributions in the acquisition phase and to the same foreperiod distribution in the transfer phase. Experiment 1 used a choice-reaction time (RT) task, and the warning signal remained on until the go signal, but there was no evidence for transfer effects. Experiments 2 and 3 used a simple- and choice-RT task, respectively, and there was silence between the warning and go signals. Both experiments revealed evidence for transfer effects, which suggests that transfer effects are most evident when there is no auditory stimulation between the warning and go signals.

scholarly journals Nutrition as a Key Modifiable Factor for Periodontitis and Main Chronic Diseases

2021 ◽  
Vol 10 (2) ◽  
pp. 197
Author(s):  
Prescilla Martinon ◽  
Laurie Fraticelli ◽  
Agnes Giboreau ◽  
Claude Dussart ◽  
Denis Bourgeois ◽  
...  
Keyword(s):  
Cardiovascular Diseases ◽  
Chronic Diseases ◽  
Periodontal Diseases ◽  
Saturated Fat ◽  
Warning Signal ◽  
Dietary Quality ◽  
Omega 3 ◽  
Periodontal Health ◽  
High Fiber ◽  
Increased Risk

Nutrition is recognized as an essential component in the prevention of a number of chronic diseases, including periodontal disease. Based on these considerations, a better understanding is required regarding how the diet, and more particularly the intake of macronutrients and micronutrients, could impact the potential relationship between nutrition and periodontal diseases, periodontal diseases and chronic diseases, nutrition and chronic diseases. To overcome this complexity, an up-to-date literature review on the nutriments related to periodontal and chronic diseases was performed. High-sugar, high-saturated fat, low-polyols, low-fiber and low-polyunsaturated-fat intake causes an increased risk of periodontal diseases. This pattern of nutrients is classically found in the Western diet, which is considered as an ‘unhealthy’ diet that causes cardiovascular diseases, diabetes and cancers. Conversely, low-sugar, high-fiber and high-omega-6-to-omega-3 fatty acid ratio intake reduces the risk of periodontal diseases. The Mediterranean, DASH, vegetarian and Okinawa diets that correspond to these nutritional intakes are considered as ‘healthy’ diets, reducing this risk of cardiovascular diseases, diabetes and cancers. The role of micronutrients, such as vitamin D, E, K and magnesium, remains unclear, while others, such as vitamin A, B, C, calcium, zinc and polyphenols have been shown to prevent PDs. Some evidence suggests that probiotics and prebiotics could promote periodontal health. Periodontal and chronic diseases share, with a time delay, nutrition as a risk factor. Thus, any change in periodontal health should be considered as a warning signal to control the dietary quality of patients and thus reduce the risk of developing chronic diseases later on.

Warning signal plasticity in hibiscus harlequin bugs

2018 ◽  
Vol 32 (5) ◽  
pp. 489-507 ◽  
Author(s):  
S. A. Fabricant ◽  
E. R. Burdfield-Steel ◽  
K. Umbers ◽  
E. C. Lowe ◽  
M. E. Herberstein
Keyword(s):  
Warning Signal ◽  
Signal Plasticity

Connoted Hazard of Voiced Warning Signal Words: An Examination of Auditory Components

2000 ◽  
Vol 44 (22) ◽  
pp. 702-705 ◽  
Author(s):  
Todd D. Hollander ◽  
Michael S. Wogalter
Keyword(s):  
Similar Pattern ◽  
Warning Signal ◽  
Sound Level ◽  
Auditory Presentation ◽  
Short Word ◽  
Different Levels

Signal words, such as DANGER and WARNING have been used in print (visual) warnings with the intention of evoking different levels of perceived hazard. However, there is limited research on whether auditory presentation of these words connote different levels of perceived hazard. In the present study, five voiced signal words were used to produce sound clips each composed of the words spoken three times and were manipulated according to the following factors: speaker gender, word unit duration (fast, slow), inter-word interval, (short, long), with the sound level held constant. Results indicate that the sound clips with short word unit duration were given higher carefulness ratings than long word unit duration ( ps < .01). The results showed a similar pattern of ratings for the signal words as shown in research using print presentations. Implications for the design of voiced warnings are described.

scholarly journals Evolution of the wave: aerodynamic and aposematic functions of butterfly wing motion

2007 ◽  
Vol 274 (1612) ◽  
pp. 913-917 ◽  
Author(s):  
Robert B Srygley
Keyword(s):  
Beat Frequency ◽  
Warning Signal ◽  
Colour Pattern ◽  
Butterfly Species ◽  
Wing Beat ◽  
Butterfly Wing ◽  
Motion Cues ◽  
Wing Beat Frequency ◽  
Wing Motion ◽  
Heliconius Cydno

Many unpalatable butterfly species use coloration to signal their distastefulness to birds, but motion cues may also be crucial to ward off predatory attacks. In previous research, captive passion-vine butterflies Heliconius mimetic in colour pattern were also mimetic in motion. Here, I investigate whether wing motion changes with the flight demands of different behaviours. If birds select for wing motion as a warning signal, aposematic butterflies should maintain wing motion independently of behavioural context. Members of one mimicry group ( Heliconius cydno and Heliconius sapho ) beat their wings more slowly and their wing strokes were more asymmetric than their sister-species ( Heliconius melpomene and Heliconius erato , respectively), which were members of another mimicry group having a quick and steady wing motion. Within mimicry groups, wing beat frequency declined as its role in generating lift also declined in different behavioural contexts. In contrast, asymmetry of the stroke was not associated with wing beat frequency or behavioural context—strong indication that birds process and store the Fourier motion energy of butterfly wings. Although direct evidence that birds respond to subtle differences in butterfly wing motion is lacking, birds appear to generalize a motion pattern as much as they encounter members of a mimicry group in different behavioural contexts.

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