LINEAR AND NONLINEAR PROPERTIES OF PRESTIMULUS VENTRAL CORD SIGNALS DISTINGUISH SWIMMING RESPONSE OF THE LEECH TO INTRACELLULAR STIMULATION

Autor:	Peter D. Brodfuehrer, Alfonso M Albano, Lauren Tapyrik, S. Sunder
Rok vydání:	2006
Předmět:	Cord Interneuron Applied Mathematics Leech Stimulation Biology biology.organism_classification Hirudo medicinalis medicine.anatomical_structure Modeling and Simulation Ventral nerve cord medicine Linear correlation Engineering (miscellaneous) Neuroscience Intracellular
Zdroj:	International Journal of Bifurcation and Chaos. 16:145-155
ISSN:	1793-6551 0218-1274
Popis:	Stimulation of a trigger interneuron of an isolated nerve cord preparation of the medicinal leech, Hirudo medicinalis, sometimes leads to swimming; sometimes it does not. The known synaptic interactions in the swim-initiating pathway do not adequately explain the observed behavioral variability. We investigate signals propagating in the ventral cord and show that, (i) prior to stimulation, the standard deviation of the signals that precede swimming (TS) is greater than that of the signals that do not (NS), (ii) linear correlations of NS signals are indistinguishable from those of TS signals, (iii) nonlinear correlations measured by mutual information of time-delayed epochs of TS signals are greater than those of NS signals, and (iv) for small time differences, the mutual information of time-delayed epochs of NS and TS signals are different from surrogates that have the same cross-correlations but are otherwise random.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::455876fd032ff2f070eccaea73c905b3 https://doi.org/10.1142/s0218127406014654 Zobrazit plný text záznamu