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Structure and Physiology of A Chordotonal Organ in the Locust Leg
Abstract
The structural and physiological properties of a chordotonal organ found in the metathoracic femoral segments of the locust and grasshopper are described. Recordings from the afferent fibres of this mechanoreceptor reveal two patterns of activity: a static or tonic discharge and a dynamic or phasic, rapidly adapting discharge. The frequency of the tonic discharge varies with the femur-tibia angle, while the phasic discharge occurs in response to angular movements of the tibia of > 3’. The frequency of the phasic response is related to the velocity of tibial displacement. The responses recorded during flexion of the tibia are different from those recorded during extension. Removal of either of the metathoracic chordotonal organs produces significant changes in walking and postural behaviour. Leg reflexes involving the femoral chordotonal organ and femoral muscles appear to play a very significant role during postural and walking activity.
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Citations
Cited by
Central Programming and Reflex Control of Walking in the Cockroach
Pearson, K. G. (1972) · Journal of Experimental Biology · doi:10.1242/jeb.56.1.173 · Cited by 395
Role of the proneural gene, atonal, in formation of Drosophila chordotonal organs and photoreceptors
Jarman, A. P., Sun, Y., Jan, L. Y., & Jan, Y. N. (1995) · Development · doi:10.1242/dev.121.7.2019 · Cited by 317
Graham, D. (1972) · Journal of Comparative Physiology · doi:10.1007/bf00693548 · Cited by 258
Mendes, C. S., Bartos, I., Akay, T., Márka, S., & Mann, R. S. (2013) · eLife · doi:10.7554/elife.00231 · Cited by 247
Metadata
- Authors
- Usherwood, P. N. R., Runion, H. I., & Campbell, J. I.
- Venue
- Journal of Experimental Biology
- Publisher
- The Company of Biologists
- Published
- 1968-04-01
- Volume
- 48
- Issue
- 2
- Pages
- 305-323
- ISSN
- 0022-0949 (ISSN-L)
- 1477-9145
- OpenAlex
- W2296087782
- Cited by
- 161
- References
- 0
- FWCI
- 2.97
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Structure and Physiology of A Chordotonal Organ in the Locust Leg. https://app.cochat.ai/papers/10.1242/jeb.48.2.305
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- Usherwood, P. N. R., Runion, H. I., & Campbell, J. I. (1968). Structure and Physiology of A Chordotonal Organ in the Locust Leg. Journal of Experimental Biology. https://doi.org/10.1242/jeb.48.2.305
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