Behavioral evidence for auditory induction in a species of rodent: Mongolian gerbil (<i>Meriones unguiculatus</i>)

Kobayasi, Kohta I.; Akihiro, Usami; Riquimaroux, Hiroshi

doi:10.1121/1.4763546

Cited by 8 publications

(4 citation statements)

References 29 publications

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“…However, given that we also found no evidence of the continuity illusion in túngara frogs—which have a simple call composed of a continuous, frequency-modulated sweep, similar to those used previously to investigate induction in humans and other animals (Ciocca & Bregman, 1987; Kluender & Jenison, 1992; Sugita, 1997)—these three studies suggest that anurans may indeed lack neural mechanisms that function to restore missing or masked acoustic elements of sounds. These combined results stand in stark contrast to those from previous studies of songbirds ( Sturnus vulgaris ; Braaten & Leary, 1999; Seeba & Klump, 2009), domestic cats (Sugita, 1997), Mongolian gerbils (Kobayasi, Usami, & Riquimaroux, 2012), rhesus macaques (Petkov et al, 2003), and cotton-top tamarins (Miller et al, 2001), which confirm that birds and mammals experience auditory induction. What methodological, neurophysiological, or functional explanations might account for this emerging pattern of taxonomic differences?…”

Section: Discussioncontrasting

confidence: 99%

Female túngara frogs do not experience the continuity illusion.

Baugh

Ryan

Bernal³

et al. 2016

Behavioral Neuroscience

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In humans and some non-human vertebrates, a sound containing brief silent gaps can be rendered perceptually continuous by inserting noise into the gaps. This so-called ‘continuity illusion’ arises from a phenomenon known as ‘auditory induction’ and results in the perception of complete auditory objects despite fragmentary or incomplete acoustic information. Previous studies of auditory induction in gray treefrogs (Hyla versicolor and H. chrysoscelis) have demonstrated an absence of this phenomenon. These treefrog species produce pulsatile (non-continuous) vocalizations, whereas studies of auditory induction in other taxa, including humans, often present continuous sounds (e.g., frequency-modulated sweeps). This study investigated the continuity illusion in a frog (Physalaemus pustulosus) with an advertisement vocalization that is naturally continuous and thus similar to the tonal sweeps used in human psychophysical studies of auditory induction. In a series of playback experiments, female subjects were presented with sets of stimuli that included complete calls, calls with silent gaps, and calls with silent gaps filled with noise. The results failed to provide evidence of auditory induction. Current evidence, therefore, suggests that mammals and birds experience auditory induction, but frogs may not. This emerging pattern of taxonomic differences is considered in light of potential methodological, neurophysiological, and functional explanations.

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Section: Discussioncontrasting

confidence: 99%

Female túngara frogs do not experience the continuity illusion.

Baugh

Ryan

Bernal³

et al. 2016

Behavioral Neuroscience

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“…Reasons why frequencies one octave above the CF would evoke s9 remain speculative. But for the perception of communication calls which commonly consist of several harmonics (Medvedev and Kanwal, 2008 ; Kobayasi et al, 2012 ) a sink coding for higher frequencies would be of behavioral advantage as it could provide additional activity alongside s5 in layer V leading to subsequent behavior related areas being activated over a longer time period. The extent of synaptic activity was significantly reduced for CF24+ stimuli compared to CF80 while onset latency depth remained unchanged (Figure 8 ).…”

Section: Discussionmentioning

confidence: 99%

Quantification of mid and late evoked sinks in laminar current source density profiles of columns in the primary auditory cortex

Schaefer

Hechavarría

Kössl

2015

Front. Neural Circuits

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Current source density (CSD) analysis assesses spatiotemporal synaptic activations at somatic and/or dendritic levels in the form of depolarizing current sinks. Whereas many studies have focused on the short (<50 ms) latency sinks, associated with thalamocortical projections, sinks with longer latencies have received less attention. Here, we analyzed laminar CSD patterns for the first 600 ms after stimulus onset in the primary auditory cortex of Mongolian gerbils. By applying an algorithm for contour calculation, three distinct mid and four late evoked sinks were identified in layers I, III, Va, VIa, and VIb. Our results further showed that the patterns of intracortical information-flow remained qualitatively similar for low and for high sound pressure level stimuli at the characteristic frequency (CF) as well as for stimuli ± 1 octave from CF. There were, however, differences associated with the strength, vertical extent, onset latency, and duration of the sinks for the four stimulation paradigms used. Stimuli one octave above the most sensitive frequency evoked a new, and quite reliable, sink in layer Va whereas low level stimulation led to the disappearance of the layer VIb sink. These data indicate the presence of input sources specifically activated in response to level and/or frequency parameters. Furthermore, spectral integration above vs. below the CF of neurons is asymmetric as illustrated by CSD profiles. These results are important because synaptic feedback associated with mid and late sinks—beginning at 50 ms post stimulus latency—is likely crucial for response modulation resulting from higher order processes like memory, learning or cognitive control.

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“…The perceptual consequences of this are unknown, but ambient noise can have interactive effects with signal degradation that are not necessarily detrimental. An example of this would be the well-known and taxonomically widespread phenomenon of perceptual restoration (where missing signals are perceived as being heard when replaced with potentially masking noise; Warren 1970;Braaten and Leary 1999;Seeba et al 2010;Kobayasi et al 2012). It remains to be tested whether urban noise is merely overlaying a detrimental effect on top of signal degradation or whether it could actually counteract certain types of signal degradation related to air turbulence or reflective surfaces during propagation.…”

Section: Signal Masking and Masking Avoidancementioning

confidence: 95%

Relative effects of ambient noise and habitat openness on signal transfer for chickadee vocalizations in rural and urban green-spaces

2015

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Urbanization creates communication challenges for many species. Birds in particular rely on vocal communication for reproduction and territory defence, but in noisy or acoustically altered environments signals may be compromised. Both ambient noise and habitat openness affect signal transfer, but it is not clear how these two variables interact in urban green-spaces. Using black-capped and mountain chickadee vocalizations, we conducted transmission experiments to measure acoustic degradation and signal-to-noise ratios among a replicated set of transects spanning a range of both ambient noise levels and habitat openness. We used Akaike information criterion (AIC), an information theoretic approach, for selection and averaging of five alternative linear mixed models. We found ambient noise strongly and negatively correlated with relative signal amplitude and detection of signal features. In contrast, habitat openness appeared to have little effect on signal transfer. We also confirmed that urban green-spaces had significantly greater ambient noise levels than rural sites, which suggests that the dominant impact of anthropogenic noise on signal transfer should be an issue of concern to species conservation within these urban green-spaces.

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Behavioral evidence for auditory induction in a species of rodent: Mongolian gerbil (Meriones unguiculatus)

Cited by 8 publications

References 29 publications

Female túngara frogs do not experience the continuity illusion.

Female túngara frogs do not experience the continuity illusion.

Quantification of mid and late evoked sinks in laminar current source density profiles of columns in the primary auditory cortex

Relative effects of ambient noise and habitat openness on signal transfer for chickadee vocalizations in rural and urban green-spaces

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