Walking in Fourier’s space: algorithms for the computation of periodicities in song patterns by the cricket Gryllus bimaculatus

Hennig, R. Matthias

doi:10.1007/s00359-009-0473-0

Cited by 45 publications

(61 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The behavior is additionally affected by variation in pulse interval, pulse duration, and also pulse number and chirp interval (Doherty, 1985a;Stout and McGhee, 1988;Hennig, 2009). With a trackball system (Hedwig and Poulet, 2004), we recorded the characteristic tuning of female phonotaxis to variations of pulse patterns.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Calling Song Recognition in Female Crickets: Temporal Tuning of Identified Brain Neurons Matches Behavior

Kostarakos¹,

Hedwig²

2012

Journal of Neuroscience

113

View full text Add to dashboard Cite

Phonotactic orientation of female crickets is tuned to the temporal pattern of the male calling song. We analyzed the phonotactic selectivity of female crickets to varying temporal features of calling song patterns and compared it with the auditory response properties of the ascending interneuron AN1 (herein referred to as TH1-AC1) and four newly identified local brain neurons. The neurites of all brain neurons formed a ring-like branching pattern in the anterior protocerebrum that overlapped with the axonal arborizations of TH1-AC1. All brain neurons responded phasically to the sound pulses of a species-specific chirp. The spike activity of TH1-AC1 and the local interneuron, B-LI2, copied different auditory patterns regardless of their temporal structure. Two other neurons, B-LI3 and B-LC3, matched the temporal selectivity of the phonotactic responses but also responded to some nonattractive patterns. Neuron B-LC3 linked the bilateral auditory areas in the protocerebrum. One local brain neuron, B-LI4, received inhibitory as well as excitatory synaptic inputs. Inhibition was particularly pronounced for nonattractive pulse patterns, reducing its spike activity. When tested with different temporal patterns, B-LI4 exhibited bandpass response properties; its different auditory response functions significantly matched the tuning of phonotaxis. Temporal selectivity was established already for the second of two sound pulses separated by one species-specific pulse interval. Temporal pattern recognition in the cricket brain occurs within the anterior protocerebrum at the first stage of auditory processing. It is crucially linked to a change in auditory responsiveness during pulse intervals and based on fast interactions of inhibition and excitation.

show abstract

Section: Discussionmentioning

confidence: 99%

“…This paradigm also comes with a variation of the duty cycle as the pulse period was kept constant at 40 ms for all chirps. It corresponds to the duty cycle paradigm used by Hennig (2009) and Verburgt et al (2008).…”

Section: Acoustic Stimulationmentioning

confidence: 99%

Calling Song Recognition in Female Crickets: Temporal Tuning of Identified Brain Neurons Matches Behavior

Kostarakos¹,

Hedwig²

2012

Journal of Neuroscience

113

View full text Add to dashboard Cite

show abstract

“…While it could be argued that the response to higher harmonics that we observed is an artefact of the rectification displayed by some electroreceptors and might not carry any behavioral relevance, a growing amount of evidence suggests that this is not the case. Indeed, some species take into account the higher harmonics contained in a call when choosing their mate (Bodnar, 1996;Hennig, 2009) while insects can reliably track contrast-based motion patterns (Theobald et al, 2008). Further studies are needed to elucidate these important questions in the electrosensory system.…”

Section: Nonlinear Coding In the Peripheral Electrosensory Systemmentioning

confidence: 99%

Neural heterogeneities influence envelope and temporal coding at the sensory periphery

Savard¹,

Krahe²,

Chacron³

2011

Neuroscience

View full text Add to dashboard Cite

Peripheral sensory neurons respond to stimuli containing a wide range of spatio-temporal frequencies. We investigated electroreceptor neuron coding in the gymnotiform wave-type weakly electric fish Apteronotus leptorhynchus. Previous studies used low to mid temporal frequencies (<256 Hz) and showed that electroreceptor neuron responses to sensory stimuli could be almost exclusively accounted for by linear models, thereby implying a rate code. We instead used temporal frequencies up to 425 Hz, which is in the upper behaviorally relevant range for this species. We show that electroreceptors can: (A) respond up to the highest frequencies tested and (B) display strong nonlinearities in their responses to such stimuli. These nonlinearities were manifested by the fact that the responses to repeated presentations of the same stimulus were coherent at temporal frequencies outside of those contained in the stimulus waveform. Specifically, these consisted of low frequencies corresponding to the time varying contrast or envelope of the stimulus as well as higher harmonics of the frequencies contained in the stimulus. Heterogeneities in the afferent population influenced nonlinear coding as afferents with the lowest baseline firing rates tended to display the strongest nonlinear responses. To understand the link between afferent heterogeneity and nonlinear responsiveness, we used a phenomenological mathematical model of electrosensory afferents. Varying a single parameter in the model was sufficient to account for the variability seen in our experimental data and yielded a prediction: nonlinear responses to the envelope and at higher harmonics are both due to afferents with lower baseline firing rates displaying greater degrees of rectification in their responses. This prediction was verified experimentally as we found that the coherence between the half-wave rectified stimulus and the response resembled the coherence between the responses to repeated presentations of the stimulus in our dataset. This result shows that rectification cannot only give rise to responses to low frequency envelopes but also at frequencies that are higher than those contained in the stimulus. The latter result implies that information is contained in the fine temporal structure of electroreceptor afferent spike trains. Our results show that heterogeneities in peripheral neuronal populations can have dramatic consequences on the nature of the neural code.

show abstract

“…By separation of time scales, cricket songs emit short-scale cues, such as the pulse periodicity, and large-scale features, such as the duration or period of chirps (Pollack, 2000). For the perception of both time scales, filter functions are known (Schildberger, 1984;Doherty, 1985a;Hedwig and Poulet, 2004;Hennig et al, 2004;Hennig, 2009). Activation of both filters and thus both time scales is important in crickets, although activation of a single filter may in some cases suffice to elicit positive responses by females (Tschuch, 1977;Hennig, 2009).…”

Section: Introductionmentioning

confidence: 99%

Auditory processing at two time scales by the cricketGryllus bimaculatus

Grobe

Rothbart

Hanschke

et al. 2012

Journal of Experimental Biology

Self Cite

View full text Add to dashboard Cite

SUMMARYThe acoustic display of many cricket species consists of series of pulses grouped into chirps, and thus information is distributed over both short and long time scales. Here we investigated the temporal cues that females of the cricket Gryllus bimaculatus used to detect a chirp pattern on a longer time scale than the fast pulse pattern. First, over a range of chirp and pause durations (100-400ms), the duty cycle of the chirp pattern emerged as the most important cue for detection. The songs of males showed a distribution at lower duty cycles than preferred by females. The duty cycle also limited the responses of females at very short durations and pauses (below 80ms). Second, by systematic variation of pulse and chirp periods of stimuli, an intermediate response field emerged that revealed the best responses of female crickets to patterns with amplitude modulations on both short and long time scales. On average, females also responded weakly to stimuli that contained amplitude modulations of only one time scale. Third, test patterns were constructed by addition of modulation frequencies rather than rectangular pulses. These tests showed that female crickets processed the chirp pattern in the time domain and tolerated noise levels up to a modulation depth of 50%. The combined evidence from all three approaches indicated inhibitory effects of unattractive patterns on both time scales. The fusion of short and long time scales during auditory processing by female crickets corresponded to a weighted ANDlike operation of two processing modules, the pulse and the chirp filter.

show abstract

Walking in Fourier’s space: algorithms for the computation of periodicities in song patterns by the cricket Gryllus bimaculatus

Cited by 45 publications

References 40 publications

Calling Song Recognition in Female Crickets: Temporal Tuning of Identified Brain Neurons Matches Behavior

Calling Song Recognition in Female Crickets: Temporal Tuning of Identified Brain Neurons Matches Behavior

Neural heterogeneities influence envelope and temporal coding at the sensory periphery

Auditory processing at two time scales by the cricketGryllus bimaculatus

Contact Info

Product

Resources

About