Workpackage 2.2: Characterisation of Neuronal Representation
Crosssection of the goldfish brainstem. Blue lines represent main processing pathways for lateral line stimuli in the brainstem. Green line represents ascending connections to higher brain centers. SA, sensory afferent; LI, local interneuron; PN, projectionneuron; MON, medial octavolateralis nucleus; LLN, lateral line nerve.
Transversal section of cricket's TAG. Blue lines represent main processing pathways for wind stimuli in the TAG. Green line represents ascending connections to higher centres of the CNS. SA, sensory afferents; LI, local interneuron; PN, projectionneuron.
In this workpackage the neuronal processing of hydromechanical stimuli by central nervous structures in the fish lateral line and the cricket cercal system is analysed in order to decipher the general principles that underlie source separation and identification.
In the lateral line system information perceived by peripheral receptors is processed predominantly in the brainstem Medial Octavolateralis Nucleus (MON). Afferent fibers distribute sensory information across the entire extent of this nucleus. We investigate the processing of hydrodynamic stimuli by the principal output cells of the MON.
In the cricket cercal system information perceived by filiform hairs is processed in the terminal abdominal ganglion (TAG). In this ganglion, axons from the mechano-sensitive hairs form synaptic connections with projection neurons and with local interneurons. We investigate the processing of sensory information by neurons in the TAG.
In the lateral line system information perceived by peripheral receptors is processed predominantly in the brainstem Medial Octavolateralis Nucleus (MON). Afferent fibers distribute sensory information across the entire extent of this nucleus. We investigate the processing of hydrodynamic stimuli by the principal output cells of the MON.
In the cricket cercal system information perceived by filiform hairs is processed in the terminal abdominal ganglion (TAG). In this ganglion, axons from the mechano-sensitive hairs form synaptic connections with projection neurons and with local interneurons. We investigate the processing of sensory information by neurons in the TAG.
cilia_pm@fz-juelich.de