A Spark in the Dark: Uncovering Natural Activity Patterns of Mormyrid Weakly Electric Fish

The Sensing of Electrical Capacitances by Weakly Electric Mormyrid Fish: Effects of Water Conductivity

Weakly electric fish can perceive electric properties of objects by monitoring the responses of their epidermal electroreceptors (mormyromasts) to their own electric organ discharges (EOD), a process known as active electrolocation. Mormyrid fish can distinguish capacitative from resistive properties of objects. It is mainly animate objects that possess capacitative properties. Water conductivi...

Apomorphine and haloperidol influence electric behaviour of a mormyrid fish.

The electric behaviour of the mormyrid Gnathonemus petersii is changed by dopaminergic drugs applied to the aquarium water. The upper limit of the interpuls interval distributions is significantly shifted to shorter intervals by apomorphine-HCl (.082 - .328 mg/ml), and to longer intervals by haloperidol (.041 - .164 mg/ml). The effect of apomorphine is antagonized by haloperidol. Probably, a do...

Chapter 5 Bursting activity in weakly electric fish

Electric organ discharge patterns during group hunting by a mormyrid fish.

Weakly electric fish emit and receive low-voltage electric organ discharges (EODs) for electrolocation and communication. Since the discovery of the electric sense, their behaviours in the wild have remained elusive owing to their nocturnal habits and the inaccessible environments in which they live. The transparency of Lake Malawi provided the first opportunity to simultaneously observe freely...

Sensory processing and corollary discharge effects in posterior caudal lobe Purkinje cells in 1 a weakly electric mormyrid fish

23 Though it has been suggested that the cerebellum functions to predict the sensory 24 consequences of motor commands, how such predictions are implemented in cerebellar circuitry 25 remains largely unknown. A detailed and relatively complete account of predictive mechanisms 26 has emerged from studies of cerebellum-like sensory structures in fish, suggesting that 27 comparisons of the cerebel...