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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

A Temporal White Noise Analysis for Extracting the Impulse Response Function of the Human Electroretinogram

Zele, A., Feigle, B., Kambhampati, P., Aher, A., McKeefry, Declan J., Parry, Neil R.A., Maguire, John, Murray, I.J., Kremers, Jan January 2017 (has links)
Yes / Purpose: We introduce a method for determining the impulse response function (IRF) of the ERG derived from responses to temporal white noise (TWN) stimuli. Methods: This white noise ERG (wnERG) was recorded in participants with normal trichromatic vision to full-field (Ganzfeld) and 39.38 diameter focal stimuli at mesopic and photopic mean luminances and at different TWN contrasts. The IRF was obtained by cross-correlating the TWN stimulus with the wnERG. Results: We show that wnERG recordings are highly repeatable, with good signal-tonoise ratio, and do not lead to blink artifacts. The wnERG resembles a flash ERG waveform with an initial negativity (N1) followed by a positivity (P1), with amplitudes that are linearly related to stimulus contrast. These N1 and N1-P1 components showed commonalties in implicit times with the a- and b-waves of flash ERGs. There was a clear transition from rod- to cone-driven wnERGs at ~1 photopic cd.m 2. We infer that oscillatory potentials found with the flash ERG, but not the wnERG, may reflect retinal nonlinearities due to the compression of energy into a short time period during a stimulus flash. Conclusion: The wnERG provides a new approach to study the physiology of the retina using a stimulation method with adaptation and contrast conditions similar to natural scenes to allow for independent variation of stimulus strength and mean luminance, which is not possible with the conventional flash ERG. Translational Relevance: The white noise ERG methodology will be of benefit for clinical studies and animal models in the evaluation of hypotheses related to cellular redundancy to understand the effects of disease on specific visual pathways.

Study of Multichannel Acquisition Method of Impulse Parameters

Yang, Mingji 10 1900 (has links)
International Telemetering Conference Proceedings / October 25-28, 1999 / Riviera Hotel and Convention Center, Las Vegas, Nevada / One of the primary tasks of a telemetry system is able to acquire multichannel impulse parameters. Some of the defects of old methods such as, low availability of equipment, channels and data never suit the needs of the requirements for the modern telemetry system, it would be more small, rapid, flexible and low cost. This paper gives a new method, it raises the availability mentioned above and forms an integrated telemetry system with the acquisition of other parameters, so it satisfies the requirements for modern telemetry system.

The cognitive determinants of alcohol use, abuse and dependence

Hubbard, Lucy January 1998 (has links)
No description available.

Functional impulsivity and individual differences in decision-making under uncertainty

Lesch, Tilman Christoph January 2015 (has links)
No description available.

Research on post-purchase emotion of impulse buying

Kuo, Yi-Chun 27 June 2007 (has links)

The Dynamic Analysis of Taiwan Money Demand Function-Impulse Response Analysis in Infinite Order Cointegrated Vector Autoregressive Processes

Chang, Shien-Lin 19 July 2000 (has links)

Kleptomania and shoplifting : a psychosocial study /

Sarasalo, Elina. January 1900 (has links)
Diss. (sammanfattning) Stockholm : Karol. inst. / Härtill 5 uppsatser.

Effects of variable training, signaled and unsignaled delays, and [delta]-amphetamine on delay-discounting functions obtained within session

Slezak, Jonathan Michael. January 2008 (has links)
Thesis (Ph. D.)--West Virginia University, 2008. / Title from document title page. Document formatted into pages; contains vii, 52 p. : ill. Vita. Includes abstract. Includes bibliographical references (p. 44-48).

The familial contexts of ego-resiliency in pre-schoolers

Burchett, Sherry J. January 1999 (has links)
Thesis (M.S.)--West Virginia University, 1999. / Title from document title page. Document formatted into pages; contains x, 160 p. Vita. Includes abstract. Includes bibliographical references (p. 90-92).

Reflection-impulsivity in preschool children

Holstein, Ruth Bosserman, January 1971 (has links)
Thesis (M.A.)--University of Wisconsin--Madison, 1971. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

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