Analysis of the cricket auditory system by acoustic stimulation using a closed sound field

Kleindienst, Hans Ulrich; Koch, Uwe; Wohlers, David

doi:10.1007/bf00609930

Cited by 63 publications

(26 citation statements)

References 22 publications

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“…However, they did not sever the acoustic trachea in the midlinecrossing portion, therefore allowing for acoustic crosstalk. On the other hand, Kleindienst et al (1981) and Horseman and Huber (1994a) did not find a threshold difference between tuning of excitation and inhibition, although their methods applied seem to be very similar to ours. This might indicate an actual difference in the strength of inhibtion between Gryllus and Acheta.…”

Section: Early Legphone Experiments Inmentioning

confidence: 74%

“…Kleindienst et al 1981). The back side of each earphone was covered with silicone glue to reduce acoustic crosstalk.…”

Section: Stimulationmentioning

confidence: 99%

“…In these experiments an excitatory control stimulus was given and the effect at various intensities of a potentially inhibiting stimulus was tested (compare Boyan 1981; Kleindienst et al 1981; Moiseff and Hoy 1983; Boyd et al 1984;Hutchings and Lewis 1984;Wiese and Eilts 1985;Horseman 1988;Horseman and Huber 1994a,b). In ON1, above a certain intensity of a contralateral stimulus, responses to a soma-ipsilateral control stimulus well above threshold were reduced and interspike intervals were increased.…”

Section: Two-tone Experiments With On1 and L1mentioning

confidence: 99%

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Processing of unilateral and bilateral auditory inputs by the ON1 and L1 interneurons of the cricket Acheta domesticus and comparison to other cricket species

Stumpner¹,

Atkins

Stout

1995

J Comp Physiol A

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1. When tested with legphone stimulation at 5 and 16 kHz, two prothoracic 'low-frequency neurons', ON1 and L1 of Acheta domesticus females, receive mainly excitation from one side (soma-ipsilateral in ON1, soma-contralateral in L1) and inhibition from the opposite side as is described for other cricket species (Figs. 2,3). While thresholds at 5 kHz are similar in L1 and ON1, L1 receives 16 kHz excitation with a 15 -20 dB higher threshold (lower than in other cricket species) than ON1. Stimulation of L1 with lower intensity 16 kHz sound on the side of its major input results in a clear IPSP visible in dendritic recordings (Figs. 3,4). In L1 and ON1 the intensity response at 16 kHz rises steeper than that at 5 kHz. 2. The most sensitive auditory low-frequency receptors recorded have similar thresholds as ON1 and L1 at 5 kHz. Responses of the most sensitive auditory highfrequency receptors recorded show an intensity dependence which is similar to that of ON1 at 16 k Hz (Fig. 1C). 3. Results of two-tone experiments show a tuning of inhibition in ON1 and L1 which is similar to excitatory tuning of ON1 (Fig. 4), however with about 10 to 15 dB higher thresholds. In contrast, in Gryllus bimaculatus an exact match between ONl-excitation and ON1/AN1 inhibition has been described.

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Section: Early Legphone Experiments Inmentioning

confidence: 74%

“…Kleindienst et al 1981). The back side of each earphone was covered with silicone glue to reduce acoustic crosstalk.…”

Section: Stimulationmentioning

confidence: 99%

Section: Two-tone Experiments With On1 and L1mentioning

confidence: 99%

See 1 more Smart Citation

Processing of unilateral and bilateral auditory inputs by the ON1 and L1 interneurons of the cricket Acheta domesticus and comparison to other cricket species

Stumpner¹,

Atkins

Stout

1995

J Comp Physiol A

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“…7B and 8A) was estimated to reduce the spike count by about 60% (Kleindienst et al, 1981), but complete inhibition may also be observed (see Fig. 8A).…”

Section: Enhancing Directionality Bymentioning

confidence: 99%

Processing of auditory information in insects

Hennig

Franz

Stumpner

2004

Microscopy Res & Technique

100

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Insects exhibit an astonishing diversity in the design of their ears and the subsequent processing of information within their auditory pathways. The aim of this review is to summarize and compare the present concepts of auditory processing by relating behavioral performance to known neuronal mechanisms. We focus on three general aspects, that is frequency, directional, and temporal processing. The first part compares the capacity (in some insects high) for frequency analysis in the ear with the rather low specificity of tuning in interneurons by looking at Q10dB values and frequency dependent inhibition of interneurons. Since sharpening of frequency does not seem to be the prime task of a set of differently tuned receptors, alternative hypotheses are discussed. Moreover, the physiological correspondence between tonotopic projections of receptors and dendritic organization of interneurons is not in all cases strong. The second part is concerned with directional hearing and thus with the ability for angular resolution of insects. The present concepts, as derived from behavioral performances, for angular resolution versus lateralization and serial versus parallel processing of directional and pattern information can be traced to the thoracic level of neuronal processing. Contralateral inhibition, a mechanism for enhancing directional tuning, appears to be most effective in parallel pathways, whereas in serial processing it may have detrimental effects on pattern processing. The third part, after some considerations of signal analysis in the temporal domain, demonstrates that closely related species often use different combinations of temporal parameters in their recognition systems. On the thoracic level, analysis of temporal modulation functions and effects of inhibition on spiking patterns reveals relatively simple processing, whereas brain neurons may exhibit more complex properties.

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“…1) suggests that continuous high activity of the lateral inhibitor in this auditory pathway and a high value of the synaptic coupling factor (0.4: Kleindienst et al, 1981; may necessarily depend on a high density of vesicles in the presynaptic terminals of ON1. The idea that synaptic coupling factors could possibly be read from ultrastructural pictures is a tempting perspective and needs further consideration.…”

Section: Significance Of the Monosynaptic Connection Between The On1 mentioning

confidence: 96%

Ultrastructure of synaptic contacts between identified neurons of the auditory pathway inGryllus bimaculatus DeGeer

Hirtz

Wiese

1997

J. Comp. Neurol.

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The synaptic contacts between the auditory sensory cells and identified auditory interneurons ON1 and AN2 have been examined at the ultrastructural level by selective electron-dense labeling of two interneurons or of one interneuron and the sensory fibers in the same preparation. The experiments have provided the following information. The auditory afferent fibers have a monosynaptic connection with the lateral inhibitors ON1 and the ascending interneuron AN2, allowing direct activation of these interneurons. Furthermore, our work proves that the paired, lateral, inhibitor ON1 neurons have direct output synapses onto each other. The results also show that the auditory afferent axons, themselves, receive synaptic inputs just before entering the central auditory neuropil. The effects of current injection into the ON1 neuron during auditory processing indicate that these synaptic inputs onto the afferents originate, in part, from the lateral branches of the ipsilateral ON1 neuron and that they have inhibitory function. The significance of these results for auditory processing and a future perspective for electron microscopic analysis of neuropil are discussed.

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Analysis of the cricket auditory system by acoustic stimulation using a closed sound field

Cited by 63 publications

References 22 publications

Processing of unilateral and bilateral auditory inputs by the ON1 and L1 interneurons of the cricket Acheta domesticus and comparison to other cricket species

Processing of unilateral and bilateral auditory inputs by the ON1 and L1 interneurons of the cricket Acheta domesticus and comparison to other cricket species

Processing of auditory information in insects

Ultrastructure of synaptic contacts between identified neurons of the auditory pathway inGryllus bimaculatus DeGeer

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