ac = attachment cell bl = basement lamina co = collar cp = cap db = distal body
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ac = attachment cell bl = basement lamina co = collar cp = cap db = distal body ds =dendritic sheath gl = glia id = inner dend. seg. mt = microtubules od =outer dend. sheath tb = tubular body th = thecogen cell sc = sensory cell
description
ac = attachment cell bl = basement lamina co = collar cp = cap db = distal body ds =dendritic sheath gl = glia id = inner dend. seg. mt = microtubules od =outer dend. sheath tb = tubular body th = thecogen cell sc = sensory cell. Insect cuticular mechanoreceptors. a. - PowerPoint PPT Presentation
Transcript of ac = attachment cell bl = basement lamina co = collar cp = cap db = distal body
ac = attachment cellbl = basement laminaco = collarcp = capdb = distal bodyds =dendritic sheathgl = gliaid = inner dend. seg.mt = microtubulesod =outer dend. sheathtb = tubular bodyth = thecogen cellsc = sensory cell
Keil 1997 Microsc. Res. Technique 39: 506-539a
b
c
d
Insect cuticular mechanoreceptors
ac = attachment cellth = thecogen cellsc = sensory cell
Insect mechanoreceptor
Keil 1997 Microsc. Res. Technique 39: 506-539
b c
ac = attachment cellbl = basement laminaco = collarcp = capdb = distal bodyds =dendritic sheathgl = gliaid = inner dend. seg.mt = microtubulesod =outer dend. sheathtb = tubular bodyth = thecogen cellsc = sensory cell
Keil 1997 Microsc. Res. Technique 39: 506-539
Keil 1997 Microsc. Res. Technique 39: 506-539
ac = attachment cellbl = basement laminaco = collarcp = capdb = distal bodyds =dendritic sheathgl = gliaid = inner dend. seg.isl = inner sensillum lymphmt = microtubulesod =outer dend. Sheathpb = proximal basal bodytb = tubular bodyth = thecogen celltr = trichogen cellsc = sensory cell
Cricket filiform receptor
c. Transitory region Keil 1997 Microsc. Res. Technique 39: 506-539
ac = attachment cellbl = basement laminaco = collarcp = capdb = distal bodyds =dendritic sheathgl = gliaid = inner dend. seg.isl = inner sensillum lymphmt = microtubulesod =outer dend. Sheathpb = proximal basal bodytb = tubular bodyth = thecogen celltr = trichogen cellsc = sensory cell
Fly “macrochaeta” receptor
Keil 1997 Microsc. Res. Technique 39: 506-539
ac = attachment cellbl = basement laminaco = collarcp = capdb = distal bodyds =dendritic sheathgl = gliaid = inner dend. seg.isl = inner sensillum lymphmt = microtubulesod =outer dend. Sheathpb = proximal basal bodytb = tubular bodyth = thecogen celltr = trichogen cellsc = sensory cell
Cockroach cercal filiform receptor
Tubular body
ac = attachment cellbl = basement laminaco = collarcp = capdb = distal bodyds =dendritic sheathgl = gliaid = inner dend. seg.isl = inner sensillum lymphmt = microtubulesod =outer dend. Sheathpb = proximal basal bodyrg = ridge of dend. sheathtb = tubular bodyth = thecogen celltr = trichogen cellsc = sensory cellse = stimulating edge
Cricket filiform sensilla
Fly campaniform sensilla
Fly campaniform sensilla
Scolopidial receptorac = attachment cellbl = basement laminaco = collarcp = capdb = distal bodyds =dendritic sheathgl = gliaid = inner dend. seg.isl = inner sensillum lymphmt = microtubulesod =outer dend. Sheathpb = proximal basal bodyrg = ridge of dend. sheathtb = tubular bodyth = thecogen celltr = trichogen cellsc = sensory cellse = stimulating edge
Mulder-Rosi, J., G.I. Cummins and J.P. Miller
“The cricket cercal system implements delay-line processing.
J. Neurophysiol. (on line Jan 27, 2010)
Experimental set-up for air-jet stimulation
Mulder-Rosi et al 2010 J. Neurophysiol (online Jan 27, 2010)
Single afferent, averaged response
“ensemble afferent responses” from 1 stimulation point triggering average on 1 sensillum on DORSAL SURFACE (sensitive to transverse wind current)
Spatial independence of conduction speed
Slope = 1.87 ± 0.09 m/s
23 units
Stimulus-sequence-dependence of proximal compound AP
Interneuron responses to stimulus sequences
50 stimuli
3 interneuron response profilesSequence-independent IN
Tip and base close in time preference (but bulk flow excluded)
Tip-before base preference
