Rhopalia (singular: rhopalium) from Ancient Greek ῥόπαλον (rhópalon) 'club' are small sensory structures of certain Scyphozoan (true jellyfish) and Cubozoan (box jellyfish) species.

2023年9月22日 · To better understand the underlying neurobiology, the researchers isolated one of the jellyfish’s visual centers, known as rhopalia. Each rhopalium contains six eyes and generates electrical signals that modulate the jellyfish’s iconic pulse movement.

Rhopalia (singular rhopalium) are the most obvious sensory structures of scyphozoan jellyfish. They include specialized structures for sensing light (eyespots) and movement or direction with respect to gravity (statoliths).

Using electrophysiology, we investigated the functionality of the regrown rhopalia and found that they generated pacemaker signals and that the lens eyes showed a normal response to light.

We examined the development of the nervous system in the rhopalium, a medusa-specific sensory structure, in Aurelia sp.1 (Cnidaria, Scyphozoa) using confocal microscopy. The rhopalial nervous system appears primarily ectodermal and contains neurons ...

The rhopalium is the sensory structure that contains ocelli (pigmented photosensitive structures), statocysts (gravity receptors), and pacemaker neurons that set the basic swim rhythm.

2013年7月22日 · The rhopalium is the sensory structure that contains ocelli (pigmented photosensitive structures), statocysts (gravity receptors), and pacemaker neurons that set the basic swim rhythm.

2011年1月3日 · Rhopalia (singular rhopalium) are the most obvious sensory structures of scyphozoan jellyfish. They include specialized structures for sensing light (eyespots) and movement or direction with respect to gravity (statoliths).

The meaning of RHOPALIUM is one of the marginal sensory bodies of a discomedusan.

2023年9月22日 · Each rhopalium houses six eyes and about 1,000 neurons. The jellyfish use their vision to help steer between mangrove roots in the tropical lagoons where they hunt tiny crustacean prey. Weaving...