ON direction-selective ganglion cells in the rabbit retina: dendritic morphology and pattern of fasciculation.
ON direction-selective (DS) ganglion cells were identified by electrophysiological recordings in DAPI labeled, isolated rabbit retinas. Their responses to a flashing spot were sustained. Their responses to moving stimuli were strong in the preferred direction and weak in the null direction. Injection of the recorded cells with Lucifer yellow revealed that the cells had a distinct dendritic morphology, consistent with that described previously (Buhl & Peichl, 1986; Amthor et al., 1989; Famiglietti, 1992a). When neighboring cells were injected, an extensive dendritic co-fasciculation was observed. The pattern of fasciculation restricts the possible synaptic connections of the ON DS cell.
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Howard Hughes Medical Institute, Massachusetts General Hospital, Boston 02114, USA.
Masland
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D000818:Animals; D003712:Dendrites / Q000502:physiology / Q000648:ultrastructure*; D004594:Electrophysiology; D005456:Fluorescent Dyes; D066298:In Vitro Techniques; D007211:Indoles; D007546:Isoquinolines; D008027:Light; D009039:Motion Perception / Q000502:physiology; D010775:Photic Stimulation / Q000379:methods; D011817:Rabbits; D012160:Retina / Q000166:cytology / Q000502:physiology*; D012165:Retinal Ganglion Cells / Q000502:physiology* / Q000528:radiation effects
D005456:Fluorescent Dyes; D007211:Indoles; D007546:Isoquinolines; C007293:DAPI; C017475:lucifer yellow