Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 17 of 17 for “"tetrode"”.
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The Behavior of The Junction Tetrode Transistor and Its Applications to Direct-Coupled Computer Circuits
Made available in DSpace on 2014-12-04T21:03:00Z (GMT). No. of bitstreams: 1 5801752.pdf: 4346539 bytes, checksum: 436e4d15d4d32cc593925bf4ee95c59b (MD5) Previous issue date: 1958
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Response properties of neighboring neurons in the auditory midbrain
… a relatively new electrophysiological technique, tetrode recordings. Tetrodes have four closely spaced recording sites (<20[mu]m) which record multi-unit activity from a small number of neighboring neurons. The recorded signals contain action potentials originating from more than one neuron. Based …
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Development of and proposed applications for tetrodes in functional mapping of rodent sensorimotor striatum
The Wilson-McNaughton tetrode preparation for awake, behaving rodents was adapted by a group of investigators for use in dorsolateral striatum. Measures were taken to improve the reliability of reaching the target area in the brain and the stability of the implanted tetrode drive over several weeks …
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Diffractive electron mirror for use in quantum electron microscopy
… one-dimensional diffraction gratings with tetrode electron mirrors. Optical interference lithography was used to fabricated silicon diffraction gratings with pitches varying from 200 nm to 500 nm. Furthermore, a proof-of-principle experiment to demonstrate their function as electron mirrors …
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Nanofabrication of flexible thin-film bioelectronics for long-term stable neural signal recording
… serpentine-shaped ribbons for stretchability and tetrode-like electrode configuration to enable the measurement of single-unit neural activities.
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Direct ray tracing for low energy electron microscopy
… correction method based upon the use of a tetrode mirror.
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Methods for Ripple Detection and Spike Sorting During Hippocampal Replay
… inference so that it can run online in a multi-tetrode scenario, and implemented it, along with ripple detection, for the open-source electrophysiological suite, "open-ephys". The algorithm's parameters were also analyzed for their suitability in operating in an unsupervised scenario. These two …
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CELLULAR CODING PROPERTIES OF GOAL DIRECTED BEHAVIOR IN THE MEDIODORSAL AND INTRALAMINAR NUCLEUS OF THE RAT: COMPARISONS TO PREFRONTAL CORTEX
… of cell types found in each thalamic nuclei. Tetrode arrays were implanted and advanced incrementally through MD and IL. A total of 1335 thalamic cells were recorded, 385 (29%) of which were behaviorally correlated (144 in MD and 241 in IL). In general, behaviorally correlated cells fell into …
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Memory processing of novel experiences in the hippocampus
… In this dissertation, I used extracellular tetrode recording techniques in freely behaving rats to demonstrate selective reactivation of novel experiences in the hippocampus. The principle neurons of the hippocampus, known as ‘place cells’, exhibit place-selective activity that is thought to …
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Neurons in Cat Primary Visual Cortex cluster by degree of tuning but not by absolute spatial phase or temporal response phase
… phase")? To address these questions, we used tetrode recordings to simultaneously isolate multiple cells at single recording sites and record their responses to flashed and drifting gratings of multiple orientations, spatial frequencies, and spatial/temporal phases. We recorded the responses …
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Error correction in the hippocampal-medial-entorhinal cognitive map
… reality environment, using in vivo chronic multi-tetrode recordings from mouse hippocampus and medial entorhinal cortex. My experimental data shows that increasing the number of available visual cues resulted in an increase in the number of firing fields, decrease in the field size and …
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Reconfigurable System-on-Chip Architecture for Neural Signal Processing
… the neural interface. While a single electrode/tetrode communicates with up to four neurons at a given instant of time, a typical interface communicates with an ensemble of hundreds or even thousands of neurons. However, translation of these signals (data) into usable information for real-time …
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Cortico-thalamic interactions for head direction coding
… part, I describe experiments using simultaneous tetrode recordings in behaving mice. Through neural decoding, I show that RSC HD representation is synchronous with that of ADn, not only during the visually-guided HD reference update, but also in darkness. This coordination is supported by strong …
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A Neural Signal Processor for Low-Latency Spike Inference
… waveforms from the raw neural data recorded by tetrodes or silicon probes and assigns single-unit identity to each detected spike. A set of Python application programming interfaces (APIs) was developed in Spiketag to enable the communication between the NSP and the PC. These APIs allow the NSP …
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Multifunctional Polymer Fiber Probes for Biomedical Application
… and Electrophysiology) probes and Tetro-DOpE (Tetrode-like Drug delivery, Optical stimulation, and Electrophysiology) probes that can simultaneously record and manipulate neural activity in behaving rodents. Taking advantage of the triple-functionality, we monitored local field potential (LFP) …
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Anatomical and Physiological Characterization of Striatal Activation of the Cerebral Cortex
… neurons in freely moving mice. A micro-drivable tetrode array was implanted in the motor cortex and connected to a headstage to detect the cortical spike activity using a 16-channel spike data acquisition system. The firing activity of neu-rons was recorded for 30 minutes as baseline and 60 …