Publisher Summary This chapter presents an introduction to behavioral embryology. The
overriding background theme in behavioral involves the role of functional factors—sensory …

The neuronal circuit underlying rapid abdominal flexion in response to phasic tactile
stimulation comprises identified afferents, interneurons of two orders, a decision unit, and …

In the crayfish abdomen the anterior five of six ganglia are serially homologous. The
locations and sizes of motoneuron somata of the fast and slow flexor systems have been …

CELLULAR NEUROP~~ YSIOI, C) GlCAL techYl@ eS have recently been used to examine
the behavioral responses of higher invertebrates, including leeches, crayfish, and mollusks …

The control of postural uropod muscles in the crayfish has been investigated by stimulating
'command'interneurones isolated from central connectives. Reciprocity is preserved …

The enormous diversity in cognitive as well as behavioral style in man is commonly
attributed to either genetics, experiental factors, or both. Because of the complex problem of …

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

1. Chronically implanted electrodes were used to detect spike activity in the
circumesophageal connectives of unrestrained crayfish. 2. 2. An interneuron in each …

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

This article proposes that biologically plausible theories of behavior can be constructed by
following a method of “phylogenetic refinement,” whereby they are progressively elaborated …