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Journal of Comparative Physiology A

, Volume 157, Issue 1, pp 105–113 | Cite as

Neuroanatomical and neurophysiological aspects of vibrational processing in the central nervous system of semi-terrestrial crabs

II. Comparative anatomical and physiological aspects of stimulus processing
  • Jim Hall
Article

Summary

  1. 1.

    Vibration sensitive (VS) neurons in two fiddler crabs (Uca pugilator andU. minax) were examined and compared. The projection areas of these cells in the brain were determined and contrasted (Fig. 6). Structurally similar regions in the brain of two other semi-terrestrial crabs (Ocypode quadrata andSesarma cinereum) are also described (Fig. 8), and contrasted with those in the fiddler crab (Fig. 2).

     
  2. 2.

    InU. pugilator, intracellular stainings and recordings revealed three types (Tonic-I, Tonic-II and Phasic-I) of VS neurons, each with distinctive response properties (Figs. 3–5).

     
  3. 3.

    The fiddler crab VS neurons showed similar response properties. But, similarities and differences in neuronal structure were evident (Fig. 6). The significance of these findings is discussed with respect to their putative role in signal analysis.

     
  4. 4.

    The principal projection site of the VS neurons in both fiddler crabs was a paired neuropil located in the dorso-medial aspect of the tritocerebrum (Fig. 7), the dorso-medial tritocerebral neuropil (DMTN) described here for the first time.

     
  5. 5.

    A DMTN-like structure was found in the brain ofO. quadrata andS. cinereum (Fig. 8). These results suggest that this neuropil may also function in the analysis of vibrational signals in these semi-terrestrial crabs.

     

Keywords

Signal Analysis Similar Response Projection Area Response Property Putative Role 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Abbreviations

CNS

central nervous system

DMTN

dorso-medial tritocerebral neuropil

VS

vibration sensitive

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Copyright information

© Springer-Verlag 1985

Authors and Affiliations

  • Jim Hall
    • 1
  1. 1.Neural and Behavioral Biology ProgramUniversity of IllinoisUrbana-ChampaignUSA

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