Electromyograms (EMGs) from phasic abdominal muscles of unrestrained and variously
restrained crayfish were used to study the involvement of sensory information in phasic …

Intracellular recordings from neuronal somata and extracellular recordings from peripheral
nerves were used to study the effects of impulses in the giant escape command interneurons …

Intracellular recordings were made from the somata of central neurons in semi-intact
preparations in order to trace sensory pathways in the phasic extensor system. 2. The tonic …

The modal escape response of a wellrested crayfish to a tap on the abdomen consists of an
initial lateral giant-mediated flexion, a movement-triggered reflex extension, and then a …

Using flexible suction electrodes, recordings were made of sensory and motor nerve activity
in a nerve innervating slow extensor muscles in the first abdominal segment of a suspended …

Cobalt staining was used to construct soma maps and study the cellular anatomy of efferent
neurons involved in extension of the crayfish, Procambarus clarkii, abdomen. 2 …

Organized behaviour requires central neural mechanisms to prevent the simultaneous
occurrence of incompatible movements. We investigated neural pathways in crayfish that …

Crayfish possess two pairs of giant axons that travel the length of the central nervous
system. The giant cells are command neurons, which produce, with a single impulse, a …

The lifting of a crayfish (Procambarus) clarkii) from the substrate results in reflexive
abdominal extension often accompanied by metachronous swimmeret beating …

Extrinsic systems were shown to control the excitability of the neurones which mediate tail-
flip escape in the crayfish. Restraint suppresses the escape mediated by giant fibres and …