Command interneurons from the circumoesophageal connectives of crayfish which are
capable of evoking various cyclical, phasic behavioural outputs are described. By pooling …

Several discrete postures have been generated by electrical stimulation at frequencies of 20–
75 Hz of command interneurons within the circumoesophageal connectives of the crayfish …

The motor effects evoked by stimulation of each of eight command fibres in the
circumoesophageal commissures of the crayfish are described. The fibres obtained …

An intracellular search was undertaken in an effort to locate and characterize the elements
involved in command-driven positional behavior in the isolated abdominal nerve cord of the …

Single central interneurons that produce flexion or extension in the crayfish abdomen act in
a coordinated fashion upon several ganglia. Each of several elements evoking a similar type …

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

The command neuron concept was derived largely from the pioneering work of Wiersma
and coworkers. Among the earliest observations were those involving the giant fibers of …

As material for the study of functional connexions within a central nervous system,
invertebrates with ganglionated nerve cords appear to offer advantages absent elsewhere …

Electrical activity recorded in the first roots of the abdominal nerve cord show bursts of
activity which accompany rhythmic movements of the swimmerets. These bursts persist …

Intracellular recording and dye injection was used to investigate the flexion‐evoking
interneurons in the isolated abdominal nerve cord of the crayfish, Procambarus clarkii. The …