ArticleJournal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology2010
Species-specific behavioral patterns correlate with differences in synaptic connections between homologous mechanosensory neurons.
Article in Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 21 citations in OpenAlex.
- Transcriptional profiling of identified neurons in leech.BMC genomics · 2021Article
- Behavioral analysis of substrate texture preference in a leech, Helobdella austinensis.Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2019Article
- Premotor Neuron Divergence Reflects Vocal Evolution.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2018Article
- Effects of Touch Location and Intensity on Interneurons of the Leech Local Bend Network.Scientific reports · 2018Article
- Variations on a theme: species differences in synaptic connectivity do not predict central pattern generator activity.Journal of neurophysiology · 2017Article
- Multiplexed Population Coding of Stimulus Properties by Leech Mechanosensory Cells.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2016Article
- Differing synaptic strengths between homologous mechanosensory neurons.Invertebrate neuroscience : IN · 2014Article
- Molluscan neurons in culture: shedding light on synapse formation and plasticity.Journal of molecular histology · 2012Review
- Decision points: the factors influencing the decision to feed in the medicinal leech.Frontiers in neuroscience · 2012Article
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
Abstract
We characterized the behavioral responses of two leech species, Hirudo verbana and Erpobdella obscura, to mechanical skin stimulation and examined the interactions between the pressure mechanosensory neurons (P cells) that innervate the skin. To quantify behavioral responses, we stimulated both intact leeches and isolated body wall preparations from the two species. In response to mechanical stimulation, Hirudo showed local bending behavior, in which the body wall shortened only on the side of the stimulation. Erpobdella, in contrast, contracted both sides of the body in response to touch. To investigate the neuronal basis for this behavioral difference, we studied the interactions between P cells. Each midbody ganglion has four P cells; each cell innervates a different quadrant of the body wall. Consistent with local bending, activating any one P cell in Hirudo elicited polysynaptic inhibitory potentials in the other P cells. In contrast, the P cells in Erpobdella had excitatory polysynaptic connections, consistent with the segment-wide contraction observed in this species. In addition, activating individual P cells caused asymmetrical body wall contractions in Hirudo and symmetrical body wall contractions in Erpobdella. These results suggest that the different behavioral responses in Erpobdella and Hirudo are partly mediated by interactions among mechanosensory cells.
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