Journal of Comparative Physiology A

, Volume 159, Issue 1, pp 33–41 | Cite as

Sensory inputs to the nucleus basalis prosencephali, a feeding-pecking centre in the pigeon

  • Ulrich Schall
  • Juan D. Delius


Evoked potentials were recorded from the nucleus basalis prosencephali (Bas) of the pigeon through chronically implanted electrodes. The auditory sensitivity of the Bas was assessed by the amplitude of the potentials. Audiograms thus obtained were comparable to those similarly measured from stations of the orthodox auditory pathway and resembled those obtained by others with behavioural techniques from the same species. The sensitivity to vibration applied to the beak was also measured. The vibrogram revealed two separate optima, one located in the lower frequency and another in the higher frequency region. These were shown to be due to trigeminal mechanoreceptive sensitivity and to bone/cochlea mediated sound sensitivity, respectively. Evoked potentials of the Bas in response to vestibular stimulation are described for the first time. The possibility that they were artefacts was excluded with several control procedures. These findings confirm recent anatomical evidence of a direct pathway from the vestibular nucleus to the nucleus basalis prosencephali. All afferents to the Bas are discussed in conjunction with the probable function of the nucleus as a sensorimotor coordinator of the pigeon's pecking/feeding behaviour.


Frequency Region Probable Function Sensory Input Control Procedure Vestibular Nucleus 
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.





area L of the medial neostriatum caudale


nucleus basalis prosencephali




tractus fronto-archistriatalis


hyperstriatum accessorium




horseradish peroxidase


hyperstriatum ventrale


nucleus lemnisci lateralis, pars ventralis


lobus parolfactorius


nucleus motorius nervi trigemini


nucleus mesencephalicus lateralis, pars dorsalis


nucleus nervi facialis


nervus vestibulocochlearis




neostriatum frontolaterale


tractus occipitomesencephalicus


nucleus ovoidalis


nucleus sensorius principalis nervi trigemini


tractus quintofrontalis


nucleus reticularis parvocellularis, pars lateralis


tractus opticus


nucleus vestibularis superior


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Copyright information

© Springer-Verlag 1986

Authors and Affiliations

  • Ulrich Schall
    • 1
  • Juan D. Delius
    • 1
  1. 1.Experimentelle TierpsychologiePsychologisches Institut, Ruhr-Universität BochumBochumFederal Republic of Germany

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