Fischer, Julia

[["dc.bibliographiccitation.firstpage","157"],["dc.bibliographiccitation.lastpage","173"],["dc.contributor.author","Fischer, J."],["dc.contributor.editor","Hüttemann, A."],["dc.date.accessioned","2017-11-13T11:23:21Z"],["dc.date.available","2017-11-13T11:23:21Z"],["dc.date.issued","2008"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/9925"],["dc.language.iso","de"],["dc.notes.status","final"],["dc.publisher"," Mentis Verlag"],["dc.publisher.place","Paderborn"],["dc.relation.ispartof","Zur Deutungsmacht der Biowissenschaften"],["dc.title","Kultivierte Tiere?"],["dc.type","book_chapter"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","655"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Animal Behaviour"],["dc.bibliographiccitation.lastpage","661"],["dc.bibliographiccitation.volume","67"],["dc.contributor.author","Fischer, Julia"],["dc.date.accessioned","2018-03-08T09:22:19Z"],["dc.date.available","2018-03-08T09:22:19Z"],["dc.date.issued","2004"],["dc.description.abstract","Few studies have addressed the development of nonhuman primate infants' responses to conspecific vocalizations. Previous studies showed that the appropriate response to alarm, intergroup and long-distance contact calls emerged at about 6 months of age. It remained unclear whether this age constitutes a watershed in terms of infants' sociocognitive development or whether it was due to the types of stimuli used in the experiments. I therefore examined the development of infant Barbary macaque, Macaca sylvanus, responses to maternal calls, under the assumption that recognition of the mother is one of the tasks that infants should master as early as possible. I presented infants of different age categories with short bouts of screams recorded from their mothers or another female of the same social group. Experiments on yearlings confirmed the suitability of the experimental approach: yearlings responded significantly more strongly to maternal calls than to calls from unrelated females. Infants were tested at 4, 10 and 16 weeks of age. In the youngest age group, they failed to respond to the playbacks, whereas from 10 weeks of age on they responded significantly more strongly to maternal calls, suggesting that by this age they recognized their mothers by voice. These results suggest that the developmental trajectories in the domain of comprehension learning may be flexible, in the sense that infant responses may depend on the salience of, and the exposure to, the call type under study. The experiments also show that screams may transmit individual-specific characteristics that are perceptually salient to the listeners."],["dc.identifier.doi","10.1016/j.anbehav.2003.08.006"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/12944"],["dc.language.iso","en"],["dc.notes.intern","GRO-Li-Import"],["dc.notes.status","final"],["dc.relation.issn","0003-3472"],["dc.title","Emergence of individual recognition in young macaques"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.contributor.author","Fischer, J."],["dc.contributor.editor","Markschies, Christoph"],["dc.contributor.editor","Osterkamp, Ernst"],["dc.date.accessioned","2017-11-13T12:49:38Z"],["dc.date.available","2017-11-13T12:49:38Z"],["dc.date.issued","2012"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/9930"],["dc.language.iso","de"],["dc.notes.status","zu prüfen"],["dc.publisher","Wallstein Verlag GmbH"],["dc.publisher.place","Göttingen"],["dc.relation.isbn","978-3-8353-1231-9"],["dc.relation.ispartof","Vademekum der Inspirationsmittel"],["dc.title","Morgenstunde"],["dc.type","book_chapter"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","58"],["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Frontiers in Zoology"],["dc.bibliographiccitation.lastpage","15"],["dc.bibliographiccitation.volume","10"],["dc.contributor.author","Maciej, Peter"],["dc.contributor.author","Ndao, Ibrahima"],["dc.contributor.author","Hammerschmidt, Kurt"],["dc.contributor.author","Fischer, Julia"],["dc.date.accessioned","2017-09-07T11:47:39Z"],["dc.date.available","2017-09-07T11:47:39Z"],["dc.date.issued","2013"],["dc.description.abstract","BACKGROUND:To understand the evolution of acoustic communication in animals, it is important to distinguish between the structure and the usage of vocal signals, since both aspects are subject to different constraints. In terrestrial mammals, the structure of calls is largely innate, while individuals have a greater ability to actively initiate or withhold calls. In closely related taxa, one would therefore predict a higher flexibility in call usage compared to call structure. In the present study, we investigated the vocal repertoire of free living Guinea baboons (Papio papio) and examined the structure and usage of the animals' vocal signals. Guinea baboons live in a complex multi-level social organization and exhibit a largely tolerant and affiliative social style, contrary to most other baboon taxa. To classify the vocal repertoire of male and female Guinea baboons, cluster analyses were used and focal observations were conducted to assess the usage of vocal signals in the particular contexts.RESULTS:In general, the vocal repertoire of Guinea baboons largely corresponded to the vocal repertoire other baboon taxa. The usage of calls, however, differed considerably from other baboon taxa and corresponded with the specific characteristics of the Guinea baboons' social behaviour. While Guinea baboons showed a diminished usage of contest and display vocalizations (a common pattern observed in chacma baboons), they frequently used vocal signals during affiliative and greeting interactions.CONCLUSIONS:Our study shows that the call structure of primates is largely unaffected by the species' social system (including grouping patterns and social interactions), while the usage of calls can be more flexibly adjusted, reflecting the quality of social interactions of the individuals. Our results support the view that the primary function of social signals is to regulate social interactions, and therefore the degree of competition and cooperation may be more important to explain variation in call usage than grouping patterns or group size."],["dc.identifier.doi","10.1186/1742-9994-10-58"],["dc.identifier.gro","3150680"],["dc.identifier.pmid","24059742"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/7463"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.issn","1742-9994"],["dc.subject","Evolution; Vocal communication; Call structure; Call usage; Guinea baboon; Social complexity; Competition"],["dc.title","Vocal communication in a complex multi-level society: constrained acoustic structure and flexible call usage in Guinea baboons"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","180"],["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Frontiers in Psychology"],["dc.bibliographiccitation.lastpage","11"],["dc.bibliographiccitation.volume","2"],["dc.contributor.author","Jürgens, Rebecca"],["dc.contributor.author","Hammerschmidt, Kurt"],["dc.contributor.author","Fischer, Julia"],["dc.date.accessioned","2017-09-07T11:47:16Z"],["dc.date.available","2017-09-07T11:47:16Z"],["dc.date.issued","2011"],["dc.description.abstract","Play-acted emotional expressions are a frequent aspect in our life, ranging from deception to theater, film, and radio drama, to emotion research. To date, however, it remained unclear whether play-acted emotions correspond to spontaneous emotion expressions. To test whether acting influences the vocal expression of emotion, we compared radio sequences of naturally occurring emotions to actors’ portrayals. It was hypothesized that play-acted expressions were performed in a more stereotyped and aroused fashion. Our results demonstrate that speech segments extracted from play-acted and authentic expressions differ in their voice quality. Additionally, the play-acted speech tokens revealed a more variable F0-contour. Despite these differences, the results did not support the hypothesis that the variation was due to changes in arousal. This analysis revealed that differences in perception of play-acted and authentic emotional stimuli reported previously cannot simply be attributed to differences in arousal, but by slight and implicitly perceptible differences in encoding."],["dc.identifier.doi","10.3389/fpsyg.2011.00180"],["dc.identifier.gro","3150667"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/8729"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/7448"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.relation.issn","1664-1078"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Authentic and Play-Acted Vocal Emotion Expressions Reveal Acoustic Differences"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.contributor.author","Fischer, Julia"],["dc.contributor.editor","Hartung, Manuel J."],["dc.contributor.editor","Kerstan, Thomas"],["dc.date.accessioned","2017-11-13T09:48:22Z"],["dc.date.available","2017-11-13T09:48:22Z"],["dc.date.issued","2008"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/9911"],["dc.language.iso","de"],["dc.notes.status","new -primates"],["dc.publisher","Piper Verlag GmbH"],["dc.publisher.place","München"],["dc.relation.isbn","978-3-492-05169-9"],["dc.relation.ispartof","Wissen to go"],["dc.title","Sonagramm"],["dc.type","book_chapter"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","70"],["dc.bibliographiccitation.lastpage","74"],["dc.contributor.author","Fischer, Julia"],["dc.contributor.editorcorporation","Berlin-Brandenburgische Akademie der Wissenschaften"],["dc.date.accessioned","2017-11-13T08:34:28Z"],["dc.date.available","2017-11-13T08:34:28Z"],["dc.date.issued","2013"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/9906"],["dc.language.iso","de"],["dc.notes.status","final"],["dc.publisher","Brandenburgische Akademie der Wissenschaften"],["dc.publisher.place","Berlin"],["dc.relation.ispartof","Vertrauen in die/in der Wissenschaft? Debatte 12"],["dc.title","Vertrauen in der/die Verhaltensbiologie"],["dc.type","book_chapter"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","195"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Evolutionary Anthropology: Issues, News, and Reviews"],["dc.bibliographiccitation.lastpage","205"],["dc.bibliographiccitation.volume","21"],["dc.contributor.author","Wheeler, Brandon C."],["dc.contributor.author","Fischer, Julia"],["dc.date.accessioned","2017-09-07T11:47:41Z"],["dc.date.available","2017-09-07T11:47:41Z"],["dc.date.issued","2012"],["dc.description.abstract","Finding the evolutionary origins of human language in the communication systems of our closest living relatives has, for the last several decades, been a major goal of many in the field of animal communication generally and primate communication specifically.1–4 The so-called “functionally referential” signals have long been considered promising in this regard, with apparent parallels with the semantic communication that characterizes language. The once-prominent idea that functionally referential signals are word-like, in that they are arbitrary sounds that refer to phenomena external to the caller, has largely been abandoned.5 However, the idea that these signals may offer the strongest link between primate communication and human language remains widespread, primarily due to the fact the behavior of receivers indicates that such signals enable them to make very specific inferences about their physical or social environment. Here we review the concept of functional reference and discuss modern perspectives that indicate that, although the sophistication of receivers provides some continuity between nonhuman primate and human cognition, this continuity is not unique to functionally referential signals. In fact, because functionally referential signals are, by definition, produced only in specific contexts, receivers are less dependent on the integration of contextual cues with signal features to determine an appropriate response. The processing of functionally referential signals is therefore likely to entail simpler cognitive operations than does that of less context-specific signals. While studies of functional reference have been important in highlighting the relatively sophisticated processes that underlie receiver behavior, we believe that the continued focus on context-specific calls detracts from the potentially more complex processes underlying responses to more unspecific calls. In this sense, we argue that the concept of functional reference, while historically important for the field, has outlived its usefulness and become a red herring in the pursuit of the links between primate communication and human language."],["dc.identifier.doi","10.1002/evan.21319"],["dc.identifier.gro","3150692"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/7477"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.issn","1060-1538"],["dc.title","Functionally referential signals: A promising paradigm whose time has passed"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","83"],["dc.bibliographiccitation.journal","Animal Behaviour"],["dc.bibliographiccitation.lastpage","93"],["dc.bibliographiccitation.volume","153"],["dc.contributor.author","Faraut, Lauriane"],["dc.contributor.author","Siviter, Harry"],["dc.contributor.author","Dal Pesco, Federica"],["dc.contributor.author","Fischer, Julia"],["dc.date.accessioned","2020-05-05T14:29:39Z"],["dc.date.available","2020-05-05T14:29:39Z"],["dc.date.issued","2019"],["dc.description.abstract","Signals are used to regulate interactions between individuals. To disentangle how motivational disposition, the processing of social information, and the costs and benefits of putative outcomes of interactions affect signalling behaviour, we investigated the usage and function of grunts during approaches in wild Guinea baboons, Papio papio. Guinea baboons live in a tolerant multilevel society with female-biased dispersal, which allowed us to compare their grunt usage to that of other more despotic baboon species. We analysed approaches by female and male Guinea baboons living in the Niokolo Koba National Park, Senegal. When approaching baboons grunted, they were more likely to interact in an affiliative fashion and less likely to displace the partner. In females, the probability of grunting was higher when the relationship strength was low, but only when an infant was present. In males, relationship strength had no impact on the likelihood of grunting during approaches. Rank did not explain variation in grunt probability in females and could not be discerned in males, but males were also more likely to grunt when an infant was near a female partner. We suggest that grunt usage in baboons can be best conceived as a combination of a motivational and a strategic component. The motivational component expresses the increased disposition to interact in an affiliative fashion, while the strategic component refers to the modulation of grunt usage with regard to relationship quality and context. The motivational component appears to be shared between baboon species, while variation in despotism and social organization places different premiums on the benefits of signalling, resulting in variation in grunting patterns between species."],["dc.identifier.doi","10.1016/j.anbehav.2019.05.003"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/64864"],["dc.language.iso","en"],["dc.relation.issn","0003-3472"],["dc.title","How life in a tolerant society affects the usage of grunts: evidence from female and male Guinea baboons"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","51"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Ethology"],["dc.bibliographiccitation.lastpage","66"],["dc.bibliographiccitation.volume","101"],["dc.contributor.author","Fischer, Julia"],["dc.contributor.author","Hammerschmidt, Kurt"],["dc.contributor.author","Todt, Dietmar"],["dc.date.accessioned","2018-03-08T09:21:19Z"],["dc.date.available","2018-03-08T09:21:19Z"],["dc.date.issued","1995"],["dc.description.abstract","Semi-free-ranging Barbary macaques (Macaca sylvanus) were observed to utter distinctive calls after disturbances in the surroundings (e.g. presence of a predator, occurrence of some unusual phenomenon). These calls differed from calls given in other contexts. Most of these calls were uttered in a serial manner, some of which lasted as long as the corresponding context. The aim of this study was to determine the object-related specificity of calls and variation of acoustic parameters within a call series. The analysis revealed that acoustic features of calls varied among contexts. Within one apparently homogeneous context, both temporal and frequency characteristics shifted gradually. Furthermore, the disturbance calls clearly differed between individuals. To examine the disturbance calls' meaning, playback experiments were conducted in which alarm calls and disturbance calls were presented. After playback of an alarm call, subjects typically showed an escape response, whereas, in response to disturbance calls, they most often scanned the surroundings. Juvenile animals generally showed stronger responses than adults."],["dc.identifier.doi","10.1111/j.1439-0310.1995.tb00345.x"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/12842"],["dc.language.iso","en"],["dc.notes.intern","GRO-Li-Import"],["dc.notes.status","final"],["dc.relation.doi","10.1111/j.1439-0310.1995.tb00345.x"],["dc.relation.issn","0179-1613"],["dc.relation.issn","1439-0310"],["dc.title","Factors Affecting Acoustic Variation in Barbary-macaque (Macaca sylvanus) Disturbance Calls"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]