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bioacoustics articles: J Comp Psychol 118

Subject: bioacoustics articles: J Comp Psychol 118
From: Dave Mellinger <>
Date: Wed, 18 Aug 2004 09:30:45 -0700
 J Comp Psychol 118 (1), 2004:
 S. R. Toukhsati and N. S. Rickard. 2004. Variations in Intensity 
 and Frequency Moderate the Facilitative Effects of a Complex 
 Rhythm Stimulus on Long-Term Memory Consolidation in the 
 Day-Old Chick (Gallus gallus). pp. 65-70.
 Abstract: The authors have previously shown that exposure to 1 
 min of a complex, but not an isochronous, rhythm stimulus 
 facilitates long-term memory consolidation in chicks (Gallus 
 gallus) trained on a passive-avoidance task (S. R. Toukhsati & 
 N. S. Rickard, 2001). The acoustic parameters of this stimulus 
 were explored further in the current study. Retention was found 
 to be best facilitated when the complex rhythm stimulus was 
 presented at intensities between 5 and 15 dBA above 
 background laboratory noise levels and at a frequency of 1 kHz. 
 Removal of an accent from the stimulus did not moderate the 
 effect. These findings provide confirmation that memory in an 
 avian species can be facilitated by exposure to a complex 
 rhythm stimulus and suggest that pattern repetition may be an 
 important feature of this effect.
 M. M. Myers, N. Ali, A. Weller, S. A. Brunelli, A. Y. Tu, M. 
 A. Hofer, and H. N. Shair. 2004. Brief Maternal Interaction 
 Increases Number, Amplitude, and Bout Size of Isolation-
 Induced Ultrasonic Vocalizations in Infant Rats (Rattus 
 norvegicus). pp. 95-102. 
 Abstract: The number, amplitude, duration, and bout structure 
 of isolation-induced ultrasonic vocalization (USV) of infant 
 rats (Rattus norvegicus) were measured on postnatal Day 10. 
 Measurements were made before and after a brief, 1-min, 
 active interaction with their mother or before and after a "pick-
 up" control procedure. Consistent with prior studies, the 
 number of USVs emitted was significantly increased in the 
 period following the maternal reunion but not after the control 
 procedure. The average amplitude of USVs was also greater 
 following maternal reunion. Finally, analyses characterizing the 
 bout structure of USV production indicated that the average 
 bout size (i.e.. number of USVs/bout) was increased 
 severalfold following the reunion with the mother, accounting 
 for the greater rate of USV production during the second 
 isolation period.
 J Comp Psychol 118 (2):
 G. D. Reynolds and R.Lickliter. 2004. Modified Prenatal 
 Sensory Stimulation Influences Postnatal Behavioral and 
 Perceptual Responsiveness in Bobwhite Quail Chicks (Colinus 
 virginianus). pp. 172?178.
 Abstract: Asynchronous bimodal stimulation during prenatal 
 development elicits higher levels of behavioral and 
 physiological arousal in precocial avian embryos than does 
 unimodal sensory stimulation. To investigate whether the 
 increased arousal associated with prenatal bimodal stimulation 
 has enduring effects into postnatal development, bobwhite 
 quail (Colinus virginianus) embryos received no supplemental 
 stimulation, unimodal auditory stimulation, or bimodal 
 (audiovisual) stimulation prior to hatching. Embryos exposed 
 to concurrent bimodal stimulation demonstrated greater levels 
 of behavioral activity and failed to use maternal visual cues to 
 successfully direct species-specific perceptual preferences 
 following hatching. These results provide initial evidence that 
 asynchronous bimodal sensory stimulation during prenatal 
 development can have enduring effects on early postnatal 
 behavioral arousal and perceptual responsiveness and suggest 
 that developmental limitations on prenatal sensory stimulation 
 play an important role in the emergence of species-typical 
 C. Poirier, L. Henry, M. Mathelier, S. Lumineau, H. Cousillas, 
 and Martine Hausberger. 2004. Direct Social Contacts Override 
 Auditory Information in the Song-Learning Process in Starlings 
 (Sturnus vulgaris). pp. 179?193.
 Abstract: Social influence on song acquisition was studied in 3 
 groups of young European starlings raised under different 
 social conditions but with the same auditory experience of 
 adult song. Attentional focusing on preferred partners appears 
 the most likely explanation for differences found in song 
 acquisition in relation to experience, sex, and song categories. 
 Thus, pair-isolated birds learned from each other and not from 
 broadcast live songs, females did not learn from the adult male 
 tutors, and sharing occurred more between socially associated 
 peers. On the contrary, single-isolated birds clearly copied the 
 adult songs that may have been the only source of attention 
 stimulation. Therefore, social preference appears as both a 
 motor for song learning and a potential obstacle for acquisition 
 from nonpreferred partners, including adults. 
 K. A. Phillips, L. M. Shauver Goodchild, M. E. Haas, M. J. 
 Ulyan, and St. Petro. 2004. Use of Visual, Acoustic, and 
 Olfactory Information During Embedded Invertebrate Foraging 
 in Brown Capuchins (Cebus apella). 
 Abstract: Experiments were conducted to investigate which 
 sensory cues are used by brown capuchins (Cebus apella) in 
 embedded invertebrate foraging. The importance of visual, 
 olfactory, and acoustic cues in such foraging was determined 
 by presenting subjects with a stimulus log modified to block 
 out given sensory cues. Experiment 1 was designed to 
 investigate whether subjects could locate an invertebrate 
 embedded in wood when only visual, acoustic, or olfactory 
 information was available. Experiments 2 and 3 were designed 
 to investigate extractive foraging behavior when two sensory 
 cues were provided. It was hypothesized that the combination 
 of visual and acoustic information would be necessary for 
 subjects to successfully locate embedded invertebrates. Results 
 indicated that subjects' performance was most successful when 
 both visual and acoustic information was available. 
 J. Call. 2004. Inferences About the Location of Food in the 
 Great Apes (Pan paniscus, Pan troglodytes, Gorilla gorilla, 
 and Pongo pygmaeus). pp. 232?241.
 Abstract: Bonobos (Pan paniscus; n = 4), chimpanzees (Pan 
 troglodytes; n = 12), gorillas (Gorilla gorilla; n = 8), and 
 orangutans (Pongo pygmaeus; n = 6) were presented with 2 
 cups (1 baited) and given visual or auditory information about 
 their contents. Visual information consisted of letting subjects 
 look inside the cups. Auditory information consisted of shaking 
 the cup so that the baited cup produced a rattling sound. 
 Subjects correctly selected the baited cup both when they saw 
 or heard the food. Nine individuals were above chance in both 
 visual and auditory conditions. More important, subjects as a 
 group selected the baited cup when only the empty cup was 
 either shown or shaken, which means that subjects chose 
 correctly without having seen or heard the food (i.e., inference 
 by exclusion). Control tests showed that subjects were not more 
 attracted to noisy cups, avoided shaken noiseless cups, or 
 learned to use auditory information as a cue during the study. It 
 is concluded that subjects understood that the food caused the 
 noise, not simply that the noise was associated with the food. 
 Dr. Lidia Eva Wysocki
 Institute of Zoology, University of Vienna
 Althanstrasse 14
 A-1090 Vienna, Austria
 Phone: ++43-1-4277/54227
 Fax: ++43-1-4277-9544

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