Dynamic encoding of perception, memory, and movement in a C. elegans chemotaxis circuit.
Enviado por Daniel Alfonso Colón-Ramos el
Título | Dynamic encoding of perception, memory, and movement in a C. elegans chemotaxis circuit. |
Publication Type | Journal Article |
Year of Publication | 2014 |
Autores | Luo, L, Wen, Q, Ren, J, Hendricks, M, Gershow, M, Qin, Y, Greenwood, J, Soucy, ER, Klein, M, Smith-Parker, HK, Calvo, AC, Colón-Ramos, DA, Samuel, ADT, Zhang, Y |
Journal | Neuron |
Volume | 82 |
Issue | 5 |
Pagination | 1115-28 |
Date Published | 2014 Jun 4 |
ISSN | 1097-4199 |
Palabras clave | Animals, Caenorhabditis elegans, Calcium, Chemoreceptor Cells, Chemotaxis, Interneurons, Memory, Perception |
Abstract | Brain circuits endow behavioral flexibility. Here, we study circuits encoding flexible chemotaxis in C. elegans, where the animal navigates up or down NaCl gradients (positive or negative chemotaxis) to reach the salt concentration of previous growth (the set point). The ASER sensory neuron mediates positive and negative chemotaxis by regulating the frequency and direction of reorientation movements in response to salt gradients. Both salt gradients and set point memory are encoded in ASER temporal activity patterns. Distinct temporal activity patterns in interneurons immediately downstream of ASER encode chemotactic movement decisions. Different interneuron combinations regulate positive versus negative chemotaxis. We conclude that sensorimotor pathways are segregated immediately after the primary sensory neuron in the chemotaxis circuit, and sensory representation is rapidly transformed to motor representation at the first interneuron layer. Our study reveals compact encoding of perception, memory, and locomotion in an experience-dependent navigational behavior in C. elegans. |
DOI | 10.1016/j.neuron.2014.05.010 |
Alternate Journal | Neuron |
PubMed ID | 24908490 |
PubMed Central ID | PMC4082684 |
Grant List | 1P01GM103770 / GM / NIGMS NIH HHS / United States 8DP1GM105383-05 / DP / NCCDPHP CDC HHS / United States P01 GM103770 / GM / NIGMS NIH HHS / United States P01GM103770 / GM / NIGMS NIH HHS / United States P40 OD010440 / OD / NIH HHS / United States R01 NS076558 / NS / NINDS NIH HHS / United States R01DC009852 / DC / NIDCD NIH HHS / United States R01NS076558 / NS / NINDS NIH HHS / United States |