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Keywords: ocellus
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Journal Articles
J Exp Biol (2010) 213 (15): 2629–2639.
Published: 1 August 2010
... ( p.j.simmons@ncl.ac.uk ) 21 4 2010 © 2010. 2010 information precision spike coding flight ocellus locust In neuronal pathways that connect sensory with motor systems, an important transformation is the conversion of graded potentials into spikes. This transformation can occur...
Journal Articles
J Exp Biol (2005) 208 (3): 433–438.
Published: 1 February 2005
.... Two pigmented structures in the brain of the ascidian larva, the ocellus and the otolith, have been shown to function as the photoreceptive and gravity sensitive organs, respectively. Here, we show that pigmentation is essential for proper phototactic and geotactic behavior in larvae of the ascidian...
Journal Articles
J Exp Biol (2003) 206 (8): 1409–1417.
Published: 15 April 2003
... is an otolith, presumably used for gravity detection,and the posterior pigment cell is an ocellus, used for photoreception. However, there is no direct experimental evidence for this assignment of function. Upward swimming behaviour occurring during the initial period of larval life was examined before...
Journal Articles
J Exp Biol (2000) 203 (8): 1341–1350.
Published: 15 April 2000
..., the pigmentation appears to be required for positive phototaxis, and the results provide further support for the shadowing role of ocellar haemoglobin. * e-mail: burr@sfu.ca 11 2 2000 23 4 2000 © 2000 by Company of Biologists 2000 ocellus phototaxis orientation mechanism...
Journal Articles
J Exp Biol (1988) 138 (1): 205–219.
Published: 1 September 1988
... the same reversal potential as hyperpolarizing potentials evoked by photoreceptor illumi-nation. When applied ionophoretically in the ocellus, other biogenic amines, including octopamine, dopamine and noradrenaline, had no effect on the L-neurones. Both gamma-aminobutyric acid and acetylcholine, however...
Journal Articles
J Exp Biol (1986) 125 (1): 405–409.
Published: 1 September 1986
...Takahiro Ohyama; Yoshihiro Toh ABSTRACT Many insects possess two or three dorsal ocelli in addition to the paired compound eyes. The dorsal ocellus is characterized by a high convergent ratio of many retinular axons upon several thick second-order neurones in the posterior region of the ocellus...
Journal Articles
J Exp Biol (1985) 117 (1): 193–213.
Published: 1 July 1985
.... The most direct was to observe any change in membrane potential recorded by one electrode as a second was inserted into the same neurone. A second method was to monitor the responses of L-neurones to pulses of light, delivered at frequent intervals to the ocellus from a green light emitting diode...