The abdominal nervous system of the crayfish contains six serially homologous ganglia,
each containing approximately 650 neurones. No two ganglia are identical, and the ganglia …

Cobalt backfills were used to demonstrate a population of approximately 50 paired
interneurons in the 6th abdominal ganglion of the crayfish, Procambarus clarkii. Intracellular …

On the basis of comparisons between total cell counts and cell counts of cobalt backfills of
all roots and connectives leaving the ganglion, we estimate that 38–50% of the …

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 …

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 …

A limited number of “command” interneurons mediate the release of coordinated ganglionic
output to antagonistic postural muscles in the crayfish abdomen. Graded contractions of …

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 …

Cobalt impregnations of the crayfish, Procambarus, mechanoreceptive afferents and
interneurons (Fig. 2) indicate that the afferents end with little terminal branching within the …

Publisher Summary The chapter demonstrates how, with the methods of ethological
analysis, the way in which complex behavior is organized can be empirically investigated …

The investigation of the relationships between a behavior pattern and its underlying sensory
and neurophysiological mechanisms in both man and animals dates back well into the last …