Single Unit Activity

Isolated single units in rat dorsal hippocampus and fascia dentata were classified as theta or complex spike cells and their firing characteristics were examined with respect to position direction and velocity of movement during forced choice food rewarded search behavior on a radial eight arm maze.

Single unit activity.

Further improvements to the current method will deal with the issues we encountered in this work. After control stimulus presentations animals were exposed to two estrous presentations from a female in the same or separate colony. The ability to record signals from neurons is centered around the electric current flow through the neuron. Stn single units and beta activity are modulated during visual choice preference and this suggests a role for stn beta activity in cognitive processing.

A single unit is defined as a single firing neuron whose spike potentials are distinctly isolated by a recording microelectrode. Isolated single units in rat dorsal hippocampus and fascia dentata were classified as theta or complex spike cells and their firing characteristics were examined with respect to position direction and velocity of movement during forced choice food rewarded search behavior on a radial eight arm maze. Local field potentials lfp are transient electrical signals generated in nervous and other tissues by the summed and synchronous electrical activity of the individual cells e g. The activity of each unit was studied in two behavioral conditions.

Single unit activities during the transition to seizures in deep mesial structures virginie lambrecq md phd institut du cerveau et de la moelle épinière icm inserm umrs 1127 cnrs umr 7225 pitié salpêtrière hospital f 75013 paris france. Neurons in that tissue lfp are extracellular signals meaning that they are generated by transient imbalances in ion concentrations in the spaces outside the cells that result from cellular electrical activity. Single unit activity in cortical area mst associated with disparity vergence eye movements. A during task performance the monkey had to compare two tones separated by one second of silence inter stimulus interval b during a nonperforming period.

The monkey heard the two. Single unit activity can be tracked over extended periods which may become important for neuron implantation studies and single unit pharmacological studies in the future. To assess the role of nucleus accumbens nacc during approach to novel sexually arousing stimuli we evaluated nacc single unit activity in male rats during the presentation of vaginal estrus extracted from novel and familiar female rats.