LIVIVO - Das Suchportal für Lebenswissenschaften

switch to English language
Zurück zur letzten Suche Suchhistorie
Erweiterte Suche

Ihre letzten Suchen

  1. AU=Reber Stephan A.
  2. AU="Kenan Onel"
  3. AU="Lawrence, Marc R"
  4. AU="Zeiler, Frederick A"
  5. AU="de la Cueva, Pablo"
  6. AU="Fuh, Jerry Ying Hsi"
  7. AU="Park, Adrian J"
  8. AU="Joshi, K D"

Suchergebnis

Treffer 1 - 10 von insgesamt 28

Suchoptionen

  1. Artikel ; Online: Gaze following in Archosauria-Alligators and palaeognath birds suggest dinosaur origin of visual perspective taking.

    Zeiträg, Claudia / Reber, Stephan A / Osvath, Mathias

    Science advances

    2023  Band 9, Heft 20, Seite(n) eadf0405

    Abstract: Taking someone else's visual perspective marks an evolutionary shift in the formation of advanced social cognition. It enables using others' attention to discover otherwise hidden aspects of the surroundings and is foundational for human communication ... ...

    Abstract Taking someone else's visual perspective marks an evolutionary shift in the formation of advanced social cognition. It enables using others' attention to discover otherwise hidden aspects of the surroundings and is foundational for human communication and understanding of others. Visual perspective taking has also been found in some other primates, a few songbirds, and some canids. However, despite its essential role for social cognition, visual perspective taking has only been fragmentedly studied in animals, leaving its evolution and origins uncharted. To begin to narrow this knowledge gap, we investigated extant archosaurs by comparing the neurocognitively least derived extant birds-palaeognaths-with the closest living relatives of birds, the crocodylians. In a gaze following paradigm, we showed that palaeognaths engage in visual perspective taking and grasp the referentiality of gazes, while crocodylians do not. This suggests that visual perspective taking originated in early birds or nonavian dinosaurs-likely earlier than in mammals.
    Mesh-Begriff(e) Animals ; Humans ; Dinosaurs/anatomy & histology ; Alligators and Crocodiles ; Fossils ; Mammals ; Species Specificity ; Biological Evolution ; Phylogeny
    Sprache Englisch
    Erscheinungsdatum 2023-05-19
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 2810933-8
    ISSN 2375-2548 ; 2375-2548
    ISSN (online) 2375-2548
    ISSN 2375-2548
    DOI 10.1126/sciadv.adf0405
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

    Zusatzmaterialien

    Kategorien

    Über subito bestellen

    Dieser Service ist kostenpflichtig (siehe Lieferbedingungen von subito). Bestellungen, die einen Artikel nebst Supplementary Material umfassen, werden grundsätzlich wie mehrfache Bestellungen bearbeitet. Gebühren fallen in diesen Fällen für jede einzelne Bestellung an.

  2. Artikel: A Patient with Graves' Disease Scheduled for Thyroidectomy with High Risk for Thyroid Storm Caused by Severe Medication Nonadherence: Anaesthetic and Surgical Considerations.

    Reber, Adrian / Valenti, Laura / Müller, Stephan

    Case reports in anesthesiology

    2019  Band 2019, Seite(n) 4781902

    Abstract: In patients with failed hormone regulation who are scheduled for indispensable total thyroidectomy, the risk of thyroid storm with severe end-organ complications has to be anticipated. This case report presents the successful surgical and ... ...

    Abstract In patients with failed hormone regulation who are scheduled for indispensable total thyroidectomy, the risk of thyroid storm with severe end-organ complications has to be anticipated. This case report presents the successful surgical and anaesthesiological management of a patient with Graves' disease, without any signs of perioperative thyroid storm. Possible recommendations for treatment are presented.
    Sprache Englisch
    Erscheinungsdatum 2019-07-22
    Erscheinungsland United States
    Dokumenttyp Case Reports
    ZDB-ID 2659087-6
    ISSN 2090-6390 ; 2090-6382
    ISSN (online) 2090-6390
    ISSN 2090-6382
    DOI 10.1155/2019/4781902
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

    Zusatzmaterialien

    Kategorien

    Über subito bestellen

    Dieser Service ist kostenpflichtig (siehe Lieferbedingungen von subito). Bestellungen, die einen Artikel nebst Supplementary Material umfassen, werden grundsätzlich wie mehrfache Bestellungen bearbeitet. Gebühren fallen in diesen Fällen für jede einzelne Bestellung an.

  3. Artikel ; Online: Early life differences in behavioral predispositions in two Alligatoridae species.

    Reber, Stephan A / Oh, Jinook / Janisch, Judith / Stevenson, Colin / Foggett, Shaun / Wilkinson, Anna

    Animal cognition

    2021  Band 24, Heft 4, Seite(n) 753–764

    Abstract: Behavioral predispositions are innate tendencies of animals to behave in a given way without the input of learning. They increase survival chances and, due to environmental and ecological challenges, may vary substantially even between closely related ... ...

    Abstract Behavioral predispositions are innate tendencies of animals to behave in a given way without the input of learning. They increase survival chances and, due to environmental and ecological challenges, may vary substantially even between closely related taxa. These differences are likely to be especially pronounced in long-lived species like crocodilians. This order is particularly relevant for comparative cognition due to its phylogenetic proximity to birds. Here we compared early life behavioral predispositions in two Alligatoridae species. We exposed American alligator and spectacled caiman hatchlings to three different novel situations: a novel object, a novel environment that was open and a novel environment with a shelter. This was then repeated a week later. During exposure to the novel environments, alligators moved around more and explored a larger range of the arena than the caimans. When exposed to the novel object, the alligators reduced the mean distance to the novel object in the second phase, while the caimans further increased it, indicating diametrically opposite ontogenetic development in behavioral predispositions. Although all crocodilian hatchlings face comparable challenges, e.g., high predation pressure, the effectiveness of parental protection might explain the observed pattern. American alligators are apex predators capable of protecting their offspring against most dangers, whereas adult spectacled caimans are frequently predated themselves. Their distancing behavior might be related to increased predator avoidance and also explain the success of invasive spectacled caimans in the natural habitats of other crocodilians.
    Mesh-Begriff(e) Alligators and Crocodiles ; Animals ; Ecosystem ; Phylogeny ; Predatory Behavior
    Sprache Englisch
    Erscheinungsdatum 2021-01-17
    Erscheinungsland Germany
    Dokumenttyp Journal Article
    ZDB-ID 1466332-6
    ISSN 1435-9456 ; 1435-9448
    ISSN (online) 1435-9456
    ISSN 1435-9448
    DOI 10.1007/s10071-020-01461-5
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

    Volltext online

    Zusatzmaterialien

    Kategorien

    Über subito bestellen

    Dieser Service ist kostenpflichtig (siehe Lieferbedingungen von subito). Bestellungen, die einen Artikel nebst Supplementary Material umfassen, werden grundsätzlich wie mehrfache Bestellungen bearbeitet. Gebühren fallen in diesen Fällen für jede einzelne Bestellung an.

  4. Artikel ; Online: Naive poison frog tadpoles use bi-modal cues to avoid insect predators but not heterospecific predatory tadpoles.

    Szabo, Birgit / Mangione, Rosanna / Rath, Matthias / Pašukonis, Andrius / Reber, Stephan A / Oh, Jinook / Ringler, Max / Ringler, Eva

    The Journal of experimental biology

    2021  Band 224, Heft 24

    Abstract: For animals to survive until reproduction, it is crucial that juveniles successfully detect potential predators and respond with appropriate behavior. The recognition of cues originating from predators can be innate or learned. Cues of various modalities ...

    Abstract For animals to survive until reproduction, it is crucial that juveniles successfully detect potential predators and respond with appropriate behavior. The recognition of cues originating from predators can be innate or learned. Cues of various modalities might be used alone or in multi-modal combinations to detect and distinguish predators but studies investigating multi-modal integration in predator avoidance are scarce. Here, we used wild, naive tadpoles of the Neotropical poison frog Allobates femoralis ( Boulenger, 1884) to test their reaction to cues with two modalities from two different sympatrically occurring potential predators: heterospecific predatory Dendrobates tinctorius tadpoles and dragonfly larvae. We presented A. femoralis tadpoles with olfactory or visual cues, or a combination of the two, and compared their reaction to a water control in a between-individual design. In our trials, A. femoralis tadpoles reacted to multi-modal stimuli (a combination of visual and chemical information) originating from dragonfly larvae with avoidance but showed no reaction to uni-modal cues or cues from heterospecific tadpoles. In addition, visual cues from conspecifics increased swimming activity while cues from predators had no effect on tadpole activity. Our results show that A. femoralis tadpoles can innately recognize some predators and probably need both visual and chemical information to effectively avoid them. This is the first study looking at anti-predator behavior in poison frog tadpoles. We discuss how parental care might influence the expression of predator avoidance responses in tadpoles.
    Mesh-Begriff(e) Animals ; Cues ; Larva/physiology ; Odonata ; Poisons ; Predatory Behavior ; Ranidae/physiology
    Chemische Substanzen Poisons
    Sprache Englisch
    Erscheinungsdatum 2021-12-16
    Erscheinungsland England
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 218085-6
    ISSN 1477-9145 ; 0022-0949
    ISSN (online) 1477-9145
    ISSN 0022-0949
    DOI 10.1242/jeb.243647
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

    Volltext online

    Zusatzmaterialien

    Kategorien

    Verfügbar in ZB MED Köln/Königswinter

    Zs.A 2629: Hefte anzeigen Standort:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

    Über subito bestellen

    Dieser Service ist kostenpflichtig (siehe Lieferbedingungen von subito). Bestellungen, die einen Artikel nebst Supplementary Material umfassen, werden grundsätzlich wie mehrfache Bestellungen bearbeitet. Gebühren fallen in diesen Fällen für jede einzelne Bestellung an.

  5. Artikel ; Online: Ravens attribute visual access to unseen competitors.

    Bugnyar, Thomas / Reber, Stephan A / Buckner, Cameron

    Nature communications

    2016  Band 7, Seite(n) 10506

    Abstract: Recent studies purported to demonstrate that chimpanzees, monkeys and corvids possess a basic Theory of Mind, the ability to attribute mental states like seeing to others. However, these studies remain controversial because they share a common confound: ... ...

    Abstract Recent studies purported to demonstrate that chimpanzees, monkeys and corvids possess a basic Theory of Mind, the ability to attribute mental states like seeing to others. However, these studies remain controversial because they share a common confound: the conspecific's line of gaze, which could serve as an associative cue. Here, we show that ravens Corvus corax take into account the visual access of others, even when they cannot see a conspecific. Specifically, we find that ravens guard their caches against discovery in response to the sounds of conspecifics when a peephole is open but not when it is closed. Our results suggest that ravens can generalize from their own perceptual experience to infer the possibility of being seen. These findings confirm and unite previous work, providing strong evidence that ravens are more than mere behaviour-readers.
    Mesh-Begriff(e) Animals ; Behavior, Animal ; Competitive Behavior/physiology ; Crows ; Female ; Generalization (Psychology) ; Male ; Theory of Mind/physiology ; Visual Perception
    Sprache Englisch
    Erscheinungsdatum 2016-02-02
    Erscheinungsland England
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 2041-1723
    ISSN (online) 2041-1723
    DOI 10.1038/ncomms10506
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

    Volltext online

    Zusatzmaterialien

    Kategorien

    Über subito bestellen

    Dieser Service ist kostenpflichtig (siehe Lieferbedingungen von subito). Bestellungen, die einen Artikel nebst Supplementary Material umfassen, werden grundsätzlich wie mehrfache Bestellungen bearbeitet. Gebühren fallen in diesen Fällen für jede einzelne Bestellung an.

    Fernleihe an ZB MED

    Sie können sich den gewünschten Titel als lokale Nutzerin oder lokaler Nutzer von ZB MED direkt an den Standort Köln schicken lassen.

  6. Artikel ; Online: A Chinese alligator in heliox: formant frequencies in a crocodilian.

    Reber, Stephan A / Nishimura, Takeshi / Janisch, Judith / Robertson, Mark / Fitch, W Tecumseh

    The Journal of experimental biology

    2015  Band 218, Heft Pt 15, Seite(n) 2442–2447

    Abstract: Crocodilians are among the most vocal non-avian reptiles. Adults of both sexes produce loud vocalizations known as 'bellows' year round, with the highest rate during the mating season. Although the specific function of these vocalizations remains unclear, ...

    Abstract Crocodilians are among the most vocal non-avian reptiles. Adults of both sexes produce loud vocalizations known as 'bellows' year round, with the highest rate during the mating season. Although the specific function of these vocalizations remains unclear, they may advertise the caller's body size, because relative size differences strongly affect courtship and territorial behaviour in crocodilians. In mammals and birds, a common mechanism for producing honest acoustic signals of body size is via formant frequencies (vocal tract resonances). To our knowledge, formants have to date never been documented in any non-avian reptile, and formants do not seem to play a role in the vocalizations of anurans. We tested for formants in crocodilian vocalizations by using playbacks to induce a female Chinese alligator (Alligator sinensis) to bellow in an airtight chamber. During vocalizations, the animal inhaled either normal air or a helium/oxygen mixture (heliox) in which the velocity of sound is increased. Although heliox allows normal respiration, it alters the formant distribution of the sound spectrum. An acoustic analysis of the calls showed that the source signal components remained constant under both conditions, but an upward shift of high-energy frequency bands was observed in heliox. We conclude that these frequency bands represent formants. We suggest that crocodilian vocalizations could thus provide an acoustic indication of body size via formants. Because birds and crocodilians share a common ancestor with all dinosaurs, a better understanding of their vocal production systems may also provide insight into the communication of extinct Archosaurians.
    Mesh-Begriff(e) Alligators and Crocodiles/physiology ; Animals ; Body Size ; Cues ; Female ; Helium ; Oxygen ; Sound Spectrography ; Vocalization, Animal/physiology
    Chemische Substanzen Helium (206GF3GB41) ; heliox (58933-55-4) ; Oxygen (S88TT14065)
    Sprache Englisch
    Erscheinungsdatum 2015-08-05
    Erscheinungsland England
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 218085-6
    ISSN 1477-9145 ; 0022-0949
    ISSN (online) 1477-9145
    ISSN 0022-0949
    DOI 10.1242/jeb.119552
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

    Volltext online

    Zusatzmaterialien

    Kategorien

    Verfügbar in ZB MED Köln/Königswinter

    Zs.A 2629: Hefte anzeigen Standort:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

    Über subito bestellen

    Dieser Service ist kostenpflichtig (siehe Lieferbedingungen von subito). Bestellungen, die einen Artikel nebst Supplementary Material umfassen, werden grundsätzlich wie mehrfache Bestellungen bearbeitet. Gebühren fallen in diesen Fällen für jede einzelne Bestellung an.

  7. Artikel ; Online: Ravens attribute visual access to unseen competitors

    Thomas Bugnyar / Stephan A. Reber / Cameron Buckner

    Nature Communications, Vol 7, Iss 1, Pp 1-

    2016  Band 6

    Abstract: Theory of Mind experiments in animals have not previously discounted the possibility that individuals follow their competitors′ behavioural cues. Here, Bugnyar et al.show that ravens consider the possibility that they are being watched when caching food, ...

    Abstract Theory of Mind experiments in animals have not previously discounted the possibility that individuals follow their competitors′ behavioural cues. Here, Bugnyar et al.show that ravens consider the possibility that they are being watched when caching food, even when they cannot see a conspecific competitor.
    Schlagwörter Science ; Q
    Sprache Englisch
    Erscheinungsdatum 2016-02-01T00:00:00Z
    Verlag Nature Portfolio
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

    Volltext online

    Zusatzmaterialien

    Kategorien

    Fernleihe an ZB MED

    Sie können sich den gewünschten Titel als lokale Nutzerin oder lokaler Nutzer von ZB MED direkt an den Standort Köln schicken lassen.

  8. Artikel ; Online: Formants provide honest acoustic cues to body size in American alligators.

    Reber, Stephan A / Janisch, Judith / Torregrosa, Kevin / Darlington, Jim / Vliet, Kent A / Fitch, W Tecumseh

    Scientific reports

    2017  Band 7, Heft 1, Seite(n) 1816

    Abstract: In many vertebrates, acoustic cues to body size are encoded in resonance frequencies of the vocal tract ("formants"), rather than in the rate of tissue vibration in the sound source ("pitch"). Anatomical constraints on the vocal tract's size render ... ...

    Abstract In many vertebrates, acoustic cues to body size are encoded in resonance frequencies of the vocal tract ("formants"), rather than in the rate of tissue vibration in the sound source ("pitch"). Anatomical constraints on the vocal tract's size render formants honest cues to size in many bird and mammal species, but it is not clear whether this correlation evolved convergently in these two clades, or whether it is widespread among amniotes (mammals, birds, and non-avian reptiles). We investigated the potential for honest acoustic cues in the bellows of adult American alligators and found that formant spacing provided highly reliable cues to body size, while presumed correlates of the source signal did not. These findings held true for both sexes and for all bellows whether produced in or out of water. Because birds and crocodilians are the last extant Archosaurians and share common ancestry with all extinct dinosaurs, our findings support the hypothesis that dinosaurs used formants as cues to body size. The description of formants as honest signals in a non-avian reptile combined with previous evidence from birds and mammals strongly suggests that the principle of honest signalling via vocal tract resonances may be a broadly shared trait among amniotes.
    Mesh-Begriff(e) Alligators and Crocodiles/anatomy & histology ; Alligators and Crocodiles/physiology ; Animals ; Body Size ; Cues ; Female ; Male ; Vocalization, Animal
    Sprache Englisch
    Erscheinungsdatum 2017-05-12
    Erscheinungsland England
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-017-01948-1
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

    Zusatzmaterialien

    Kategorien

    Über subito bestellen

    Dieser Service ist kostenpflichtig (siehe Lieferbedingungen von subito). Bestellungen, die einen Artikel nebst Supplementary Material umfassen, werden grundsätzlich wie mehrfache Bestellungen bearbeitet. Gebühren fallen in diesen Fällen für jede einzelne Bestellung an.

  9. Artikel: Common marmosets are sensitive to simple dependencies at variable distances in an artificial grammar.

    Reber, Stephan A / Šlipogor, Vedrana / Oh, Jinook / Ravignani, Andrea / Hoeschele, Marisa / Bugnyar, Thomas / Fitch, W Tecumseh

    Evolution and human behavior : official journal of the Human Behavior and Evolution Society

    2019  Band 40, Heft 2, Seite(n) 214–221

    Abstract: Recognizing that two elements within a sequence of variable length depend on each other is a key ability in understanding the structure of language and music. Perception of such interdependencies has previously been documented in chimpanzees in the ... ...

    Abstract Recognizing that two elements within a sequence of variable length depend on each other is a key ability in understanding the structure of language and music. Perception of such interdependencies has previously been documented in chimpanzees in the visual domain and in human infants and common squirrel monkeys with auditory playback experiments, but it remains unclear whether it typifies primates in general. Here, we investigated the ability of common marmosets (
    Sprache Englisch
    Erscheinungsdatum 2019-01-22
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ISSN 1090-5138
    ISSN 1090-5138
    DOI 10.1016/j.evolhumbehav.2018.11.006
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

    Volltext online

    Zusatzmaterialien

    Kategorien

    Über subito bestellen

    Dieser Service ist kostenpflichtig (siehe Lieferbedingungen von subito). Bestellungen, die einen Artikel nebst Supplementary Material umfassen, werden grundsätzlich wie mehrfache Bestellungen bearbeitet. Gebühren fallen in diesen Fällen für jede einzelne Bestellung an.

    Fernleihe an ZB MED

    Sie können sich den gewünschten Titel als lokale Nutzerin oder lokaler Nutzer von ZB MED direkt an den Standort Köln schicken lassen.

  10. Artikel: Territorial raven pairs are sensitive to structural changes in simulated acoustic displays of conspecifics

    Reber, Stephan A / Markus Boeckle / Georgine Szipl / Judith Janisch / Thomas Bugnyar / W. Tecumseh Fitch

    Animal behaviour. 2016 June, v. 116

    2016  

    Abstract: Human language involves combining items into meaningful, syntactically structured wholes. The evolutionary origin of syntactic abilities has been investigated by testing pattern perception capacities in nonhuman animals. New World primates can respond ... ...

    Abstract Human language involves combining items into meaningful, syntactically structured wholes. The evolutionary origin of syntactic abilities has been investigated by testing pattern perception capacities in nonhuman animals. New World primates can respond spontaneously to structural changes in acoustic sequences and songbirds can learn to discriminate between various patterns in operant tasks. However, there is no conclusive evidence that songbirds respond spontaneously to structural changes in patterns without reinforcement or training. In this study, we tested pattern perception capacities of common ravens, Corvus corax, in a habituation–discrimination playback experiment. To enhance stimulus salience, call recordings of male and female ravens were used as acoustic elements, combined to create artificial territorial displays as target patterns. We habituated captive territorial raven pairs to displays following a particular pattern and subsequently exposed them to several test and control playbacks. Subjects spent more time visually orienting towards the loudspeaker in the discrimination phase when they heard structurally novel call combinations, violating the pattern presented during habituation. This demonstrates that songbirds, much like primates, can be sensitive to structural changes in auditory patterns and respond to them spontaneously, without training.
    Schlagwörter Corvus ; Primates ; acoustics ; animal behavior ; females ; humans ; males ; songbirds
    Sprache Englisch
    Erscheinungsverlauf 2016-06
    Umfang p. 153-162.
    Erscheinungsort Elsevier Ltd
    Dokumenttyp Artikel
    ZDB-ID 281-1
    ISSN 0003-3472
    ISSN 0003-3472
    DOI 10.1016/j.anbehav.2016.04.005
    Datenquelle NAL Katalog (AGRICOLA)

    Volltext online

    Zusatzmaterialien

    Kategorien

    Verfügbar in ZB MED Bonn

    Z 71/741: Hefte anzeigen

    Über subito bestellen

    Dieser Service ist kostenpflichtig (siehe Lieferbedingungen von subito). Bestellungen, die einen Artikel nebst Supplementary Material umfassen, werden grundsätzlich wie mehrfache Bestellungen bearbeitet. Gebühren fallen in diesen Fällen für jede einzelne Bestellung an.

    Fernleihe an ZB MED

    Sie können sich den gewünschten Titel als lokale Nutzerin oder lokaler Nutzer von ZB MED direkt an den Standort Köln schicken lassen.

Zum Seitenanfang