Search Results - "Madden, J D"

Disconnected aging: Cerebral white matter integrity and age-related differences in cognition by Bennett, I.J, Madden, D.J

“…Highlights • Cortical disconnection may contribute to age-related cognitive decline. • Diffusion tensor imaging (DTI) can assess the integrity of neural…”
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Soft Mechanical Sensors Through Reverse Actuation in Polypyrrole by Wu, Y., Alici, G., Madden, J. D. W., Spinks, G. M., Wallace, G. G.

“…The phenomenon of voltage generated from a soft sensor using polypyrrole in response to mechanical deformation is described and investigated. The sensor…”
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Age-related Changes in Neural Activity during Visual Target Detection Measured by fMRI by Madden, David J., Whiting, Wythe L., Provenzale, James M., Huettel, Scott A.

“…We used functional magnetic resonance imaging (fMRI) of a visual target detection (oddball) task to investigate age differences in neural activation for the…”
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The Architecture of Cross-Hemispheric Communication in the Aging Brain: Linking Behavior to Functional and Structural Connectivity by Davis, Simon W., Kragel, James E., Madden, David J., Cabeza, Roberto

“…Contralateral recruitment remains a controversial phenomenon in both the clinical and normative populations. To investigate the neural correlates of this…”
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Fast Carbon Nanotube Charging and Actuation by Madden, J. D. W., Barisci, J. N., Anquetil, P. A., Spinks, G. M., Wallace, G. G., Baughman, R. H., Hunter, I. W.

“…Millisecond timescale charging and contraction of carbon nanotube artificial muscle is demonstrated. The mechanical power‐to‐mass ratio is five times higher…”
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Effects of Healthy Aging on Hippocampal and Rhinal Memory Functions: An Event-Related fMRI Study by Daselaar, Sander M., Fleck, Mathias S., Dobbins, Ian G., Madden, David J., Cabeza, Roberto

“…Event-related functional magnetic resonance imaging was used to study the effects of healthy aging on hippocampal and rhinal memory functions. Memory for past…”
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Adult age differences in the functional neuroanatomy of verbal recognition memory by Madden, David J., Turkington, Timothy G., Provenzale, James M., Denny, Laura L., Hawk, Thomas C., Gottlob, Lawrence R., Coleman, R. Edward

“…Adult age differences are frequently observed in the performance of memory tasks, but the changes in neural function mediating these differences are largely…”
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Three-dimensional microfabrication by localized electrochemical deposition by Madden, J.D., Hunter, I.W.

“…A microfabrication technology capable of electrodepositing truly three-dimensional metal structures is introduced. Micrometer-scale nickel structures including…”
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In vivo assembly of a truncated H subunit mutant of the Rhodobacter sphaeroides photosynthetic reaction centre and direct electron transfer from the Q A quinone to an electrode by Jun, D, Dhupar, H S, Mahmoudzadeh, A, Duong, F, Madden, J D W, Beatty, J T

“…We address a challenge in the engineering of proteins to redirect electron transfer pathways, using the bacterial photosynthetic reaction centre (RC)…”
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In vivo assembly of a truncated H subunit mutant of the Rhodobacter sphaeroides photosynthetic reaction centre and direct electron transfer from the QA quinone to an electrode by Jun, D., Dhupar, H. S., Mahmoudzadeh, A., Duong, F., Madden, J. D. W., Beatty, J. T.

“…We address a challenge in the engineering of proteins to redirect electron transfer pathways, using the bacterial photosynthetic reaction centre (RC)…”
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A controlled randomized trial evaluating the effect of lowered incubator oxygen tension on live births in a predominantly blastocyst transfer program by Meintjes, Marius, Chantilis, Samuel J., Douglas, James D., Rodriguez, Alfred J., Guerami, Ali R., Bookout, David M., Barnett, Brian D., Madden, James D.

“…BACKGROUND The potentially damaging effect of free O2 radicals to cultured embryos may be reduced by adding scavengers to the culture media or by reducing the…”
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Use of new strains of Rhodobacter sphaeroides and a modified simple culture medium to increase yield and facilitate purification of the reaction centre by Jun, D., Saer, R. G., Madden, J. D., Beatty, J. T.

“…A new gene expression system was developed in Rhodobacter sphaeroides , replacing a pRK415-based system used previously. The broad host-range IPTG-inducible…”
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Adult Age Differences in Visual Search Accuracy: Attentional Guidance and Target Detectability by Madden, David J, Gottlob, Lawrence R, Allen, Philip A

“…Previous research, relying primarily on reaction time measures of highly accurate performance, suggests that both younger and older adults can increase the…”
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Age Differences in the Strategic Allocation of Visual Attention by Gottlob, Lawrence R., Madden, David J.

“…The allocation of visual spatial attention was investigated in two groups of adults, younger (n = 24; M = 19yrs) and older (n = 24; M = 68yrs). Two sequential…”
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A randomized controlled study of human serum albumin and serum substitute supplement as protein supplements for IVF culture and the effect on live birth rates by Meintjes, Marius, Chantilis, Samuel J., Ward, David C., Douglas, James D., Rodriguez, Alfred J., Guerami, Ali R., Bookout, David M., Barnett, Brian D., Madden, James D.

“…BACKGROUND It has been speculated that the addition of proteins more complex than human serum albumin (HSA) to culture media may improve IVF outcomes. Whether…”
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A structural, electronic and electrochemical study of polypyrrole as a function of oxidation state by Warren, M.R., Madden, J.D.

“…The electronic, structural, and chemical properties of polypyrrole doped with the hexafluorophosphate ion are investigated as a function of oxidation state…”
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Electrochemical switching of conducting polymers: A variable resistance transmission line model by Warren, M.R., Madden, J.D.

“…We present a model to explain some anomalous properties that have been observed in the electrochemical switching of conducting polymers, including: moving…”
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Methodological issues in the assessment of neuropsychologic function after cardiac surgery by Blumenthal, James A., Mahanna, Elizabeth P., Madden, David J., White, William D., Croughwell, Narda D., Newman, Mark F.

“…This report reviews critical issues facing investigators interested in neuropsychologic sequelae after cardiac operations: (1) experimental design; (2)…”
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Adult Age Differences in Attentional Allocation During Memory Search by Madden, David J, Pierce, Thomas W, Allen, Philip A

“…Young and older adults performed a memory search task in which, before probe onset, a cue indicated which of 4 memory-set items the probe was most likely to…”
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Adult Age Differences in Shifting Focused Attention by Madden, David J, Connelly, S. Lisa, Pierce, Thomas W

“…Young and older adults performed a choice response task in which 1 of 2 target letters was presented visually at 1 of 4 display locations. In 2 experiments,…”
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