A simple cerebellar system: The lateral line lobe of the goldfish

Caird, David

doi:10.1007/bf00611926

Cited by 52 publications

(17 citation statements)

References 46 publications

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“…In both cartilaginous and bony fish lateral line information is processed at all levels of the neuraxis, from medulla (e.g. Caird 1978;Claas 1980) to telencephalon (Finger and Bullock 1982;Echteler 1985;Bleckmann et al 1987McCormick 1989;Striedter 1991). In most central lateral line studies an electrical shock applied to the posterior lateral line nerve or a vibrating sphere placed close to a lateral line canal was used as a stimulus (review Schellart and Kroese 1989;Bleckmann 1994).…”

Section: Introductionmentioning

confidence: 99%

“…Mtinz 1985; Coombs et al 1996) and central lateral line units (e.g. Caird 1978;), they do not simulate more natural, complex hydrodynamic stimuli, like the chain of vortex rings generated by a subundulatory swimming fish (Blickhan et al 1992). 456 More natural complex hydrodynamic stimuli may, however, be more relevant to delineate central filter properties of the lateral line (Bleckmann et al 1991a).…”

Section: Introductionmentioning

confidence: 99%

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The responses of central octavolateralis cells to moving sources

1996

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Mechanosensory lateral line units recorded from the medulla (medial octavolateralis nucleus) and midbrain (torus semicircularis) of the bottom dwelling catfish Ancistrus sp. responded to water movements caused by an object that passed the fish laterally. In terms of peak spike rate or total number of spikes elicited responses increased with object speed and sometimes showed saturation (Figs. 7, 14). At sequentially greater distances the responses of most medullary lateral line units decayed with object distance (Fig. 11). Units tuned to a certain object speed or distance were not found. The signed directionality index of most lateral line units was between -50 and + 50, i.e. these units were not or only slightly sensitive to the direction of object motion (Figs. 10, 17). However, some units were highly directionally sensitive in that the main features of the response histograms and/or peak spike rates clearly depended on the direction of object movement (e.g. Fig. 9C, D and Fig. 16). Midbrain lateral line units of Ancistrus may receive input from more than one sensory modality. All bimodal lateral line units were OR units, i.e., the units were reliably driven by a unimodal stimulus of either modality. Units which receive bimodal input may show an extended speed range (e.g. Fig. 18).

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The responses of central octavolateralis cells to moving sources

1996

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“…In this context, Alnaes [1973] and Caird [1978] reported that large bipolar cells of the medial octavolateralis nucleus in teleosts possess receptive fields that include widely spaced receptors. However, Caird [1978] also reported that the smaller cells of this nucleus exhibit more re stricted receptive fields but suggested that this restric tion may be due to lateral inhibition by the large bipo lar cells rather than receipt of more circumscribed af ferents by the small cells. Clearly, further studies are required to characterize the organization and func tions of the medial octavolateralis nucleus and higher centers.…”

Section: Projections Of Canal and Superficial Neuromast Afferentsmentioning

confidence: 99%

The Primary Projections of the Lateral-Line Nerves of the Florida Gar, Lepisosteus platyrhincus; pp. 51–63

Song¹,

Northcutt²

1991

Brain Behav Evol

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Gars, like most other ray-finned fishes, possess lines of superficial and canal neuromasts that form highly ordered spatial arrays on the head and trunk. These neuromasts are innervated by three pairs of cranial nerves: anterior, middle and posterior lateral-line nerves. Application of horseradish peroxidase to the roots of these nerves indicates that the afferent fibers of each nerve terminate throughout the rostrocaudal extent of the ipsilateral octavolateralis column, composed of medial and caudal octavolateralis nuclei, as well as rostrally in the eminentia granularis of the cerebellum. The afferents of each nerve terminate within different regions of these nuclei, thus preserving a rostrocaudal somatotopy of the peripheral receptors. The individual rami of these nerves innervate peripheral receptors in a dorsoventral sequence; however, application of horseradish peroxidase to these rami indicates an almost total overlap of the terminal fields of adjacent rami and, thus, little or no preservation of dorsoventral somatotopy of the peripheral receptors. Similarly, the terminal fields of fibers that innervate canal and superficial neuromasts overlap extensively, and there is no evidence for separate maps of canal and superficial neuromasts. Furthermore, the position of the terminal fields of superficial neuromasts is not consistent with a hypothesis that these receptors may have evolved into electroreceptors in some teleosts. However, these experiments do indicate that superficial neuromasts, like canal neuromasts, are innervated by efferent fibers of rostral and caudal efferent nuclei, but there is no evidence of a diencephalic efferent nucleus as occurs in teleosts.

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“…Medullar single unit responses to lateral line stimulation have been recorded previously from an cel [Aimes. 1973] and from the goldfish [Caird, 1978]. Both these species have primary LL afferents in the medial nucleus, which receives nearly exclusively LL input.…”

Section: Introductionmentioning

confidence: 99%

The Pattern of Trunk Lateral Line Afferents and Efferents in the Rainbow Trout (Salmo gairdneri)

Schellart

Kroese

1992

Brain Behav Evol

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The primary projections of the mechanosensory posterior lateral line nerve of the rainbow trout Salmo gairdneri, a teleost without lateral line specializations, were studied by applying horseradish peroxidase (HRP). The afferents project nearly exclusively to the nucleus medialis and a small nucleus caudalis in the hindbrain, and to the eminentia granulans. In addition, there is a sparse projection to the cerebellum, but a projection to the magnocellular nucleus is lacking. The afferent projection to the lateral part of the eminentia granulans is more dense than the projection to the medial nucleus, as shown by image processing of the HRP labeling. The efferent fibers originate from a bilateral pair of large octavolateral nuclei in the hindbrain. Characteristic for these nuclei are their large, fusiform and bipolar neurons. Another specific feature is the oblique orientation of the somata, with the main dendritic shaft coursing ventrolaterally and the axonal shaft coursing dorsomedially. The axons of the efferent neurons bifurcate. The shape, orientation and size of the efferent somata are the same in the entire efferent nucleus. In contrast to other teleosts, the occurrence of efferent somata found contralaterally (21%) is substantial. The part of the octavolateral efferent nucleus innervating the neuromasts of the trunk is estimated to contain at most 150 cell bodies unilaterally.

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A simple cerebellar system: The lateral line lobe of the goldfish

Cited by 52 publications

References 46 publications

The responses of central octavolateralis cells to moving sources

The responses of central octavolateralis cells to moving sources

The Primary Projections of the Lateral-Line Nerves of the Florida Gar, <i>Lepisosteus platyrhincu</i><i>s</i>; pp. 51–63

The Pattern of Trunk Lateral Line Afferents and Efferents in the Rainbow Trout <i>(Salmo gairdneri)</i>

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