- Title Pages
- Preface
- Acknowledgements
- Contributors
- Abbreviations
- 1 The cytoskeleton of the squid giant axon
- 2 The nervous system of <i>Loligo pealei</i> provides multiple models for analysis of organelle motility
- 3 Cyclic nucleotide homeostasis and axonal G proteins in the squid <i>Loligo forbesi</i>
- 4 The detection and properties of electrogenic Na<sup>+</sup>–K<sup>+</sup> transport in the squid axon membrane
- 5 Resting And Active K<sup>+</sup> Channels In The Squid Axon Membrane
- 6 Studies of the kinetics of the ionic and gating currents in the axons of <i>Loligo forbesi</i> as a guide to modelling of the sodium channel
- 7 An improved voltage clamp for gating current recording from the squid giant axon
- 8 Voltage Dependence of Sodium Channel Inactivation In The Squid Giant Axon
- 9 Tetrodotoxin affects sodium gating current in squid giant axon
- 10 Single-channel properties and gating of Na<sup>+</sup> and K<sup>+</sup> channels in the squid giant axon
- 11 The effects of internal Ca<sup>2+</sup> and Mg<sup>2+</sup> on ion channels in the squid giant axon
- 12 Anaesthetics, Convulsants, And The Squid Axon Membrane
- 13 Control of the spatial distribution of sodium channels in the squid giant axon and its cell bodies
- 14 Electrophysiology of squid Schwann cells
- 15 The pharmacology of receptors present on squid giant axon Schwann cells
- 16 Periaxonal ion regulation in the squid
- 17 Synaptic transmission in the squid stellate ganglion
- 18 Multiple calcium signalling pathways in squid giant presynaptic terminals
- 19 Chemical transmission at the squid giant synapse
- 20 The structure and physiology of cephalopod muscle fibres
- 21 Organization of cephalopod chromatophore systems: a neuromuscular image-generator
- 22 Neurotransmitters of squid chromatophores
- 23 Diffusion properties of the microenvironment of cephalopod brain
- 24 Cephalopod brains: promising preparations for brain physiology
- 25 Intracellular recordings from the chromatophore lobes of <i>Octopus</i>
- 26 Multiple matrices in the memory system of <i>Octopus</i>
- 27 A novel occluding junction forms the blood–brain barrier in cephalopod molluscs
- 28 Cerebrovascular organization and dynamics in cephalopods
- 29 Squid rhodopsin
- 30 The firefly squid, <i>Watasenia scintillans</i>, has three visual pigments
- 31 The statocysts of cephalopods
- 32 Physiology of squid olfaction
- Index
Intracellular recordings from the chromatophore lobes of Octopus
Intracellular recordings from the chromatophore lobes of Octopus
- Chapter:
- (p.415) 25 Intracellular recordings from the chromatophore lobes of Octopus
- Source:
- Cephalopod Neurobiology
- Author(s):
J. A. Miyan
J. B. Messenger
- Publisher:
- Oxford University Press
This chapter is an account of a whole brain preparation that has enabled for the first time to dye-fill, and record intracellularly from, cells in the brain of Octopus. Over a hundred cells in the posterior chromatophore lobes of nearly 50 octopuses were penetrated. Most cells were spontaneously active, firing at 1–12 Hz, some were silent and others showed regular bursting activity. Lucifer Yellow fills confirmed that many cells in this lobe are unusual by invertebrate standards in having cell body ‘dendrites’ as well as axonal processes with branches. Many cells are also dye-coupled. This new preparation could be modified for longlasting intracellular recording in many lobes of the brain of semi-intact cephalopods. Perfused, isolated brains have yielded some information about the electrical properties of large cells in the sub-oesophageal lobes, and activity in some of these cells has been correlated with ventilatory activity of the mantle in semi-intact, perfused preparations, but these preparations are short lived and the supraoesophageal lobes rapidly lose vascular flow. Brain slice techniques are now being applied with great success to the cephalopod central nervous system, but these are not suitable for neuroethological studies. The chapter concentrates on the chromatophore system of semi-intact octopuses, as this has been well characterized and the posterior chromatophore lobes are readily accessible.
Keywords: chromatophore system, octopus, intracellular recording, sub-oesophageal lobes, dye-coupled, neuroethological
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- Title Pages
- Preface
- Acknowledgements
- Contributors
- Abbreviations
- 1 The cytoskeleton of the squid giant axon
- 2 The nervous system of <i>Loligo pealei</i> provides multiple models for analysis of organelle motility
- 3 Cyclic nucleotide homeostasis and axonal G proteins in the squid <i>Loligo forbesi</i>
- 4 The detection and properties of electrogenic Na<sup>+</sup>–K<sup>+</sup> transport in the squid axon membrane
- 5 Resting And Active K<sup>+</sup> Channels In The Squid Axon Membrane
- 6 Studies of the kinetics of the ionic and gating currents in the axons of <i>Loligo forbesi</i> as a guide to modelling of the sodium channel
- 7 An improved voltage clamp for gating current recording from the squid giant axon
- 8 Voltage Dependence of Sodium Channel Inactivation In The Squid Giant Axon
- 9 Tetrodotoxin affects sodium gating current in squid giant axon
- 10 Single-channel properties and gating of Na<sup>+</sup> and K<sup>+</sup> channels in the squid giant axon
- 11 The effects of internal Ca<sup>2+</sup> and Mg<sup>2+</sup> on ion channels in the squid giant axon
- 12 Anaesthetics, Convulsants, And The Squid Axon Membrane
- 13 Control of the spatial distribution of sodium channels in the squid giant axon and its cell bodies
- 14 Electrophysiology of squid Schwann cells
- 15 The pharmacology of receptors present on squid giant axon Schwann cells
- 16 Periaxonal ion regulation in the squid
- 17 Synaptic transmission in the squid stellate ganglion
- 18 Multiple calcium signalling pathways in squid giant presynaptic terminals
- 19 Chemical transmission at the squid giant synapse
- 20 The structure and physiology of cephalopod muscle fibres
- 21 Organization of cephalopod chromatophore systems: a neuromuscular image-generator
- 22 Neurotransmitters of squid chromatophores
- 23 Diffusion properties of the microenvironment of cephalopod brain
- 24 Cephalopod brains: promising preparations for brain physiology
- 25 Intracellular recordings from the chromatophore lobes of <i>Octopus</i>
- 26 Multiple matrices in the memory system of <i>Octopus</i>
- 27 A novel occluding junction forms the blood–brain barrier in cephalopod molluscs
- 28 Cerebrovascular organization and dynamics in cephalopods
- 29 Squid rhodopsin
- 30 The firefly squid, <i>Watasenia scintillans</i>, has three visual pigments
- 31 The statocysts of cephalopods
- 32 Physiology of squid olfaction
- Index