Previous microelectrode recordings in the putamen of monkeys have revealed a class of tonically active neurons without apparent behavioral correlates. The present study shows that such neurons have responses to stimuli that trigger movement but that these responses disappear when motor responses to the stimuli are extinguished. The short latency of the… (More)
Photo-patternable adhesives and silicones are introduced for use in centimeter-scale robotics. Traditional approaches to making robots at this size scale require the use of expensive start-up equipment and/or precise machining, and generally yield fragile and costly robots in small numbers. The multi-material milli-robot prototyping process uses… (More)
For recording the activity of single neurons in unanesthetized animals two techniques can be used: permanently implanted microwires (7) or movable microelectrodes (1, 2, 4-6, 8). The latter method permits to make a selection of cells in the course of the experiment. However, cells cannot be kept for a long time and are easily lost during violent head… (More)
Anesthetized and immobilized cats were used. The interval between the peripheral (conditioning) and the cortical (testing) stimulation equalled the latency of the response to effective peripheral input. Efferent nuclear neurons were identified by antidromic stimulations from contralateral brainstem nuclei. Various sequences of excitation and inhibition of… (More)
The Rapid Microrobot Prototyping (RaMP) Process uses Loctite R photo-patternable polymer products and photolithography to rapidly fabricate robust, inexpensive, and compliant robots. The process is developed and examined on two size scales. On the size scale of several centimeters, two functional robots and a small gripper have been designed and… (More)
Bioretention cells have been found to improve the hydrologic and water quality performance of impervious areas such as parking lots. The current study recorded hydrologic data from a bioretention cell in Silver Spring, MD, over a period of 2 years, collecting water quality data from 14 storm events. Data showed the cell completely captured storm events that… (More)
Spontaneous and evoked activities of nucleus interpositus neurons (IN) of the cerebellum were examined before and after cerebellar paravermal cortex lesions in cats anesthetized with alpha-chloralose. It was found that spontaneous activity increased dramatically following cortical ablation: before the lesion only 4% of cells encountered fired at a rate… (More)
Spontaneous and evoked activity of red nucleus neurons is described in chloralose anesthetized cats. It is suggested that some effects, e.g. burst discharges and prolonged inhibitory-excitatory responses, were induced by the use of chloralose.
A new, quick and inexpensive method of precision varnishing of metal microelectrodes is proposed. The circle surface pellicle of dried lacquer produced around the tip promotes microelectrode preparation.
Interaction of afferent influences from pontine nuclei (NRTP, NPL and NPM) and inferior olive (IO) with influences from the cortex of neocerebellum (Crus I and II of hemisphere) was studied in dentate neurons (ND) in anesthetized and immobilized cats. Interaction of converging influences was tested with regard to response latencies. Activation of pontine… (More)