 |
||||
|
||||
|
||||
|
||||
Previous Article | Next Article
Volume 17, Number 15, Issue of August 1, 1997 pp. 5956-5971
Copyright ©1997 Society for NeuroscienceMuscle Response to Changing Neuronal Input in the Lobster (Panulirus interruptus) Stomatogastric System: Spike Number- versus Spike Frequency-Dependent Domains
Received April 7, 1997; revised May 8, 1997; accepted May 12, 1997.
Lee G. Morris and Scott L. Hooper Neurobiology Program, Department of Biological Sciences, Ohio University, Athens, Ohio 45701
We aimed to determine the neuronal parameters controlling the contraction of slowly contracting, non-twitch ("tonic") muscles driven by rhythmic neuronal activity. These muscles are almost completely absent in mammals but are common in lower vertebrates and invertebrates. Slow muscles are often believed to function primarily in tonic motor patterns. However, previous research and data presented here indicate that slow muscles are also driven by rhythmic neuronal inputs.
In rapidly contracting "twitch" muscles, motor unit force is believed to be primarily determined by motor neuron spike frequency. What determines slow muscle output is less well understood. We present a simple model that suggests that when motor neuron burst duration is brief compared with muscle summation time, spike number, not spike frequency, determines slow muscle contraction amplitude.
We present analyses that distinguish between spike number and spike frequency dependence in two slow muscles in the lobster stomatogastric system. Our analysis shows that, functionally, one muscle is spike number dependent, whereas the other is primarily spike frequency dependent. Thus, both of these parameters can determine slow muscle output. To predict the movements elicited by neuronal activity in preparations in which slow muscles are common, it may be necessary to determine spike number versus spike frequency dependence for each muscle.
Spike number dependence couples motor neuron burst duration and spike frequency in that changing either parameter alone alters spike number (and hence muscle contraction amplitude). Neural networks innervating spike number-dependent muscles may therefore have specific properties to compensate for the complexity intrinsic to spike number coding.
Key words: Panulirus interruptus; lobster; crustacea; stomatogastric; pylorus; gastric mill; pyloric network; gastric network; slow muscle; muscle contraction amplitude; spike number; spike frequency; rate coding; number coding
This article has been cited by other articles:
K. L. Page, J. Zakotnik, V. Durr, and T. Matheson
Motor Control of Aimed Limb Movements in an Insect
J Neurophysiol, February 1, 2008; 99(2): 484 - 499.
[Abstract] [Full Text] [PDF]
S. L. Hooper, C. Guschlbauer, G. von Uckermann, and A. Buschges
Slow Temporal Filtering May Largely Explain the Transformation of Stick Insect (Carausius morosus) Extensor Motor Neuron Activity Into Muscle Movement
J Neurophysiol, September 1, 2007; 98(3): 1718 - 1732.
[Abstract] [Full Text] [PDF]
C. Guschlbauer, H. Scharstein, and A. Buschges
The extensor tibiae muscle of the stick insect: biomechanical properties of an insect walking leg muscle
J. Exp. Biol., March 15, 2007; 210(6): 1092 - 1108.
[Abstract] [Full Text] [PDF]
S. L. Hooper, C. Guschlbauer, G. von Uckermann, and A. Buschges
Different Motor Neuron Spike Patterns Produce Contractions With Very Similar Rises in Graded Slow Muscles
J Neurophysiol, February 1, 2007; 97(2): 1428 - 1444.
[Abstract] [Full Text] [PDF]
Y. Zhurov and V. Brezina
Variability of motor neuron spike timing maintains and shapes contractions of the accessory radula closer muscle of Aplysia.
J. Neurosci., June 28, 2006; 26(26): 7056 - 7070.
[Abstract] [Full Text] [PDF]
W. Stein, C. R. Smarandache, M. Nickmann, and U. B. S. Hedrich
Functional consequences of activity-dependent synaptic enhancement at a crustacean neuromuscular junction
J. Exp. Biol., April 1, 2006; 209(7): 1285 - 1300.
[Abstract] [Full Text] [PDF]
J. H. Belanger
Contrasting Tactics in Motor Control by Vertebrates and Arthropods
Integr. Comp. Biol., August 1, 2005; 45(4): 672 - 678.
[Abstract] [Full Text] [PDF]
D. Bucher, A. A. Prinz, and E. Marder
Animal-to-Animal Variability in Motor Pattern Production in Adults and during Growth
J. Neurosci., February 16, 2005; 25(7): 1611 - 1619.
[Abstract] [Full Text] [PDF]
J. B. Thuma, L. G. Morris, A. L. Weaver, and S. L. Hooper
Lobster (Panulirus interruptus) Pyloric Muscles Express the Motor Patterns of Three Neural Networks, Only One of Which Innervates the Muscles
J. Neurosci., October 1, 2003; 23(26): 8911 - 8920.
[Abstract] [Full Text] [PDF]
D. Bucher, V. Thirumalai, and E. Marder
Axonal Dopamine Receptors Activate Peripheral Spike Initiation in a Stomatogastric Motor Neuron
J. Neurosci., July 30, 2003; 23(17): 6866 - 6875.
[Abstract] [Full Text] [PDF]
J. E. Bestman and R. Booker
Modulation of foregut synaptic activity controls resorption of molting fluid during larval molts of the moth Manduca sexta
J. Exp. Biol., April 1, 2003; 206(7): 1207 - 1220.
[Abstract] [Full Text] [PDF]
D. Zoccolan, G. Pinato, and V. Torre
Highly Variable Spike Trains Underlie Reproducible Sensorimotor Responses in the Medicinal Leech
J. Neurosci., December 15, 2002; 22(24): 10790 - 10800.
[Abstract] [Full Text] [PDF]
N. J. Hoover, A. L. Weaver, P. I. Harness, and S. L. Hooper
Combinatorial and Cross-Fiber Averaging Transform Muscle Electrical Responses with a Large Stochastic Component into Deterministic Contractions
J. Neurosci., March 1, 2002; 22(5): 1895 - 1904.
[Abstract] [Full Text] [PDF]
A. Szucs, R. C. Elson, M. I. Rabinovich, H. D. I. Abarbanel, and A. I. Selverston
Nonlinear Behavior of Sinusoidally Forced Pyloric Pacemaker Neurons
J Neurophysiol, April 1, 2001; 85(4): 1623 - 1638.
[Abstract] [Full Text] [PDF]
L. G. Morris and S. L. Hooper
Mechanisms Underlying Stabilization of Temporally Summated Muscle Contractions in the Lobster (Panulirus) Pyloric System
J Neurophysiol, January 1, 2001; 85(1): 254 - 268.
[Abstract] [Full Text] [PDF]
D. J. Baro, A. Ayali, L. French, N. L. Scholz, J. Labenia, C. C. Lanning, K. Graubard, and R. M. Harris-Warrick
Molecular Underpinnings of Motor Pattern Generation: Differential Targeting of Shal and Shaker in the Pyloric Motor System
J. Neurosci., September 1, 2000; 20(17): 6619 - 6630.
[Abstract] [Full Text] [PDF]
V. Brezina, I. V. Orekhova, and K. R. Weiss
The Neuromuscular Transform: The Dynamic, Nonlinear Link Between Motor Neuron Firing Patterns and Muscle Contraction in Rhythmic Behaviors
J Neurophysiol, January 1, 2000; 83(1): 207 - 231.
[Abstract] [Full Text] [PDF]
C. G. Evans, F. S. Vilim, O. Harish, I. Kupfermann, K. R. Weiss, and E. C. Cropper
Modulation of Radula Opener Muscles in Aplysia
J Neurophysiol, September 1, 1999; 82(3): 1339 - 1351.
[Abstract] [Full Text] [PDF]
H. Namba and B. Mulloney
Coordination of Limb Movements: Three Types of Intersegmental Interneurons in the Swimmeret System and Their Responses to Changes in Excitation
J Neurophysiol, May 1, 1999; 81(5): 2437 - 2450.
[Abstract] [Full Text] [PDF]
J. C. Jorge-Rivera, K. Sen, J. T. Birmingham, L. F. Abbott, and E. Marder
Temporal Dynamics of Convergent Modulation at a Crustacean Neuromuscular Junction
J Neurophysiol, November 1, 1998; 80(5): 2559 - 2570.
[Abstract] [Full Text] [PDF]
L. G. Morris and S. L. Hooper
Muscle Response to Changing Neuronal Input in the Lobster (Panulirus Interruptus) Stomatogastric System: Slow Muscle Properties Can Transform Rhythmic Input into Tonic Output
J. Neurosci., May 1, 1998; 18(9): 3433 - 3442.
[Abstract] [Full Text] [PDF]
|
|
|
|
 |
|