Somatosensory evoked potentials in the telencephalon of Atlantic salmon (Salmo salar) following galvanic stimulation of the tail

@article{Nordgreen2007SomatosensoryEP,
  title={Somatosensory evoked potentials in the telencephalon of Atlantic salmon (Salmo salar) following galvanic stimulation of the tail},
  author={Janicke Nordgreen and Tor Einar Horsberg and Birgit Ranheim and Andrew C. N. Chen},
  journal={Journal of Comparative Physiology A},
  year={2007},
  volume={193},
  pages={1235-1242}
}
Electric activity in the brain which is time-locked to a given stimulation of the somatosensory system can be recorded as a somatosensory evoked potential (SEP). We investigated whether a galvanic stimulation of the tail base in Atlantic salmon (Salmo salar) would elicit a SEP in the telencephalon. The telencephalon is central in learning and memory, and activity here may be a prerequisite for processing of external stimuli on a cognitive or emotional level. Anaesthetized salmon (n = 11) were… Expand
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References

SHOWING 1-10 OF 52 REFERENCES
Mechanoreceptive and nociceptive responses in the central nervous system of goldfish (Carassius auratus) and trout (Oncorhynchus mykiss).
  • R. Dunlop, P. Laming
  • Biology, Medicine
  • The journal of pain : official journal of the American Pain Society
  • 2005
TLDR
It is shown that there is neuronal activity in all brain areas including the telencephalon, suggesting a nociceptive pathway from the periphery to the higher central nervous system of fish. Expand
Sensory Processing in the Pallium of a Mormyrid Fish
TLDR
Sensory-evoked potentials in this weakly electric fish pallium may be more segregated than in elasmobranchs and anurans and have some surprising similarities to those in mammals. Expand
Evaluation of methods for eliciting somatosensory-evoked potentials in the awake, freely moving rat
TLDR
The results indicate that the different SEP components might be generated by different ascending neural pathways. Expand
Trigeminal somatosensory innervation of the head of a teleost fish with particular reference to nociception
TLDR
The trigeminal nerve of a teleost fish, the rainbow trout, was examined to determine what types of somatosensory receptors were present on the head of the trout specifically searching for nociceptors, which had similar physiological properties to nocICEptors found in higher vertebrates. Expand
Motor and somatosensory evoked potentials recorded from the rat.
TLDR
These experiments demonstrate that the combined recording of MEPs and SSEPs is an accurate and easily performed method of monitoring the functional integrity of the rat cord, and suggest that this technique would be of value in patients, especially those undergoing operative treatment of spinal lesions. Expand
Identification of visual pallial telencephalon in the goldfish, Carassius auratus: a combined cytochrome oxidase and electrophysiological study
A strategy based upon a comparative decrease in bilateral symmetry of cytochrome oxidase (COX) histochemistry following unilateral eye enucleation was used to identify the primary visual area in theExpand
Avoidance learning in goldfish (Carassius auratus) and trout (Oncorhynchus mykiss) and implications for Pain perception
This paper investigates spatially cued behavioural responses of two species of fish to an acute noxious stimulus and demonstrates response elasticity. Typical avoidance responses to a nociceptiveExpand
The effects of telencephalic pallial lesions on spatial, temporal, and emotional learning in goldfish
TLDR
These functional data support the homology between the medial pallium of the teleost and the pallial amygdala of land vertebrates, and between theteleost lateral pallium and the mammalian hippocampus. Expand
Effect of morphine on far-field somatosensory evoked potentials in the rat
TLDR
Infusion of morphine into the thalamus showed effects on the far-field somatosensory evoked potentials similar to the maximal effect obtained on intravenous infusion, which could be attributed to its effect on theThalamic neurones. Expand
Involvement of the telencephalon in spaced-trial avoidance learning in the goldfish (Carassius auratus)
TLDR
The results suggest that the shuttle response was instrumentally acquired and provide further support for the hypothesis that the fish telencephalon contains an emotional system that is critical for fear conditioning. Expand
...
1
2
3
4
5
...