Research

Electrophysiology
Neural Systems
Nonlinear Circuits and Systems

Dissected Hirudo verbana. Nerve cord is the thin linear structure in dissection center. Nodes along cord are ganglia containing hundreds of individual neurons.

Photo: Dr. John Jellies

A linear observer of a continuous time hyperchaotic oscillator via a single scalar signal as described in D. A. Miller and G. Grassi, "Experimental realization of observer-based hyperchaos synchronization," IEEE Transactions on Circuits and Systems-I: Fundamental Theory and Applications, vol. 48, pp. 366-374, March 2001.

READ how Alexandra Ferguson's research in neural stimulation at WMU led her to MIT.

Direct electrical current stimulation of a leech neuron using a sharp electrode. Electrode tip is on the order of one micron.

Photo: Joshua White

Membrane voltage response of a medicinal leech Hirudo medicinalis P-cell neuron to a low (yellow), medium (green), and high (black) stimuatlon current. D. A. Miller, J. Jellies, M. Ellinger, M. E. Koelling, and C. L. Linn, "Electrophysiology rig for optimal control of neuron membrane voltage," in Michigan Chapter of the Society for Neuroscience Annual Meeting, (Kalamazoo, MI), May 30, 2014. Poster.