This study characterised and compared the properties of chemically sensitive nociceptors in
the avian nasal and oral epithelia recorded from either microelectrode stabs of the trigeminal
ganglion (nasal mucosa) or microdissected twigs of the nasopalatine nerve (palatine
mucosa) in urethane anaesthetized hens. A total of 146 slowly and rapidly adapting nasal
and palate mechanically sensitive receptors were identified exhibiting von Frey thresholds to
mechanical stimulation ranging from 0.2 to 8.3 g (mean 3.21±2.28 g, n= 39) in the nasal …