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Volumn 17, Issue 6, 2007, Pages 629-636

Adaptive motor behavior in insects

Author keywords

[No Author keywords available]

Indexed keywords

ADAPTIVE BEHAVIOR; BRAIN; BRAIN REGION; INSECT; MEDICAL RESEARCH; MOTOR CONTROL; MOTOR SYSTEM; MOVEMENT (PHYSIOLOGY); NERVE CELL; NERVOUS SYSTEM DEVELOPMENT; NONHUMAN; PRIORITY JOURNAL; REVIEW; SENSOR; SENSORY GANGLION;

EID: 40749148399     PISSN: 09594388     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.conb.2008.01.001     Document Type: Review
Times cited : (75)

References (52)
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    • Lajoie K., and Drew T. Lesions of area 5 of the posterior parietal cortex in the cat produce errors in the accuracy of paw placement during visually guided locomotion. J Neurophysiol 97 (2007) 2339-2354. These investigators developed a very interesting visual dissociation locomotion task in which a cat, walking on a treadmill, must adjust its gait to step over an object that is moving at a different speed than the cat is walking. In order to successfully perform the required gait changes, the cat must consider the movement of the object, using visual inputs, as well as the movement of its own body, using proprioceptive information. Lesions of area 5 of the posterior parietal cortex adversely affect the cat's ability to navigate objects on the treadmill, and have particular effects in the visual dissociation task. These interactions between processing in the brain and local control of leg movement are parallel to the insect systems that we describe. Similar effects of brain lesion on movement are also being pursued in studies of insect movement around barriers.
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    • In this electrophysiological study on the stick insect the authors show for the first time that the processing of proprioceptive feedback from the legs changes depending on walking direction. The effect of increased load is directly correlated with the direction of walking: in the forward direction, retractor activity is initiated or enhanced and protractor activity terminated, while the same feedback initiates or enhances protractor activity and terminates retractor activity, when the animal is walking backwards.
    • Akay T., Ludwar B., Goritz M.L., Schmitz J., and Büschges A. Segment specificity of load signal processing depends on walking direction in the stick insect leg muscle control system. J Neurosci 27 (2007) 3285-3294. In this electrophysiological study on the stick insect the authors show for the first time that the processing of proprioceptive feedback from the legs changes depending on walking direction. The effect of increased load is directly correlated with the direction of walking: in the forward direction, retractor activity is initiated or enhanced and protractor activity terminated, while the same feedback initiates or enhances protractor activity and terminates retractor activity, when the animal is walking backwards.
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    • Mu L, Ritzmann RE: Interaction between descending input and local thoracic reflexes for joint coordination in cockroach turning. I. Descending influence on thoracic sensory reflexes. J. Comp Physiol A 2008, in press. In order to react to barriers, an animal must transiently alter its leg movements to generate changes in posture or joint coordination. Descending commands can effect these changes by working with local control systems. That is, they can alter a few crucial local feedback circuits, such as the ones that we describe for stick insect, resulting in physical alterations that will then influence additional feedback systems, ultimately pushing leg control to a new stable turning or climbing state. Such changes require that descending commands be capable of altering local feedback circuits. This paper examines this possibility by documenting the reflex responses to controlled stimulation through the femoral chordotonal organ (FCo) that monitors movement of the femur-tibia (FTi) joint. It then compares the intact responses to those recorded in insects that had experienced bilateral lesion of both neck connectives that completely removed all descending activity. The reflex responses of the motoneurons that control the distal FTi joint were not affected much by these lesions. However, those of the motoneurons that control the more proximal coxa-trochanter joint were altered both quantitatively and qualitatively.
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    • The behavioural transition from straight to curve walking: kinetics of leg movement parameters and the initiation of turning
    • This kinematic study investigates how the stick insect mediates the transition from straight to optical-induced curve walking. The authors show that the antennal optomotor responses lead the transition, with the forelegs following through a modification in their stance direction. Middle and hind legs show subsequent changes in leg kinematics that appear to be not synchronous, but rather independent from each other.
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    • It is well established that during walking coordination between legs of an animal is established by the contribution of specific rules that have been described on the behavioral level between walking legs of an insect. This kinematic study provides basic evidence that these rules themselves are modulated in a context-dependent manner during the execution of turning in stick insect walking.
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* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.