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Research Output 1984 2016

2008
37 Citations (Scopus)

Effects of sleeping position on development of infant cardiovascular control

Yiallourou, S., Walker, A. M. & Horne, R. S. C., 2008, In : Archives of Disease in Childhood. 93, 10, p. 868 - 872 5 p.

Research output: Contribution to journalArticleResearchpeer-review

170 Citations (Scopus)

Impaired autoregulation in preterm infants identified by using spatially resolved spectroscopy

Wong, F. Y-W., Leung, T. S., Austin, T., Wilkinson, M. H., Meek, J. H., Wyatt, J. S. & Walker, A. M., 2008, In : Pediatrics. 121, 3, p. 604 - 611 8 p.

Research output: Contribution to journalArticleResearchpeer-review

46 Citations (Scopus)

Prone sleeping impairs circulatory control during sleep in healthy term infants: Implications for SIDS

Yiallourou, S., Walker, A. M. & Horne, R. S. C., 2008, In : Sleep. 31, 8, p. 1139 - 1146 8 p.

Research output: Contribution to journalArticleResearchpeer-review

18 Citations (Scopus)

Sleep position alters arousal processes maximally at the high-risk age for Sudden Infant Death Syndrome

Richardson, H. L., Walker, A. M. & Horne, R. S. C., 2008, In : Journal of Sleep Research. 17, 4, p. 450 - 457 8 p.

Research output: Contribution to journalArticleResearchpeer-review

80 Citations (Scopus)

Sympathetic nerve activity in the superior cervical ganglia increases in response to imposed increases in arterial pressure

Cassaglia, P. A., Griffiths, R. I. & Walker, A. M., 2008, In : American Journal of Physiology - Regulatory Integrative and Comparative Physiology. 294, 4, p. 1255 - 1261 7 p.

Research output: Contribution to journalArticleResearchpeer-review

23 Citations (Scopus)

Sympathetic withdrawal augments cerebral blood flow during acute hypercapnia in sleeping lambs

Cassaglia, P. A., Griffiths, R. I. & Walker, A. M., 2008, In : Sleep. 31, 12, p. 1729 - 1734 6 p.

Research output: Contribution to journalArticleResearchpeer-review

11 Citations (Scopus)

Validation of cerebral venous oxygenation measured using near-infrared spectroscopy and partial jugular venous occlusion in the newborn lamb

Wong, F. Y-W., Barfield, C., Campbell, L., Brodecky, V. & Walker, A. M., 2008, In : Journal of Cerebral Blood Flow and Metabolism. 28, p. 74 - 80 6 p.

Research output: Contribution to journalArticleResearchpeer-review

2007
3 Citations (Scopus)

Endotoxin-induced circulatory changes in the newborn brain: a review

Feng, S. Y. S., Yu, V. Y. H. & Walker, A. M., 2007, In : Hong Kong Journal of Paediatrics. 12, 2, p. 111 - 117 7 p.

Research output: Contribution to journalArticleResearchpeer-review

20 Citations (Scopus)

Maturation of the initial ventilatory response to hypoxia in sleeping infants

Richardson, H. L., Parslow, P. M., Walker, A. M. & Harding, R., 2007, In : Journal of Sleep Research. 16, 1, p. 117 - 127 11 p.

Research output: Contribution to journalArticleResearchpeer-review

6 Citations (Scopus)

Power spectral analysis of two-channel EEG in hypoxic-ischaemic encephalopathy

Wong, F. Y-W., Barfield, C. & Walker, A. M., 2007, In : Early Human Development. 83, p. 379 - 383 4 p.

Research output: Contribution to journalArticleResearchpeer-review

7 Citations (Scopus)

The effects of repeated exposure to hypercapnia on arousal and cardiorespiratory responses during sleep in lambs

Johnston, R., Grant, D. A., Wilkinson, M. H. & Walker, A. M., 2007, In : The Journal of Physiology. 582, Pt 1, p. 369 - 378 10 p.

Research output: Contribution to journalArticleResearchpeer-review

2006
4 Citations (Scopus)

A model of coronary artery endothelial dysfunction in the sleeping lamb

Hamilton, G. S., Edwards, B. A., Solin, P. & Walker, A. M., 2006, In : Sleep Medicine. 7, 7, p. 573 - 579 7 p.

Research output: Contribution to journalArticleResearchpeer-review

9 Citations (Scopus)

Sleep-dependent changes in cerebral oxygen consumption in newborn lambs

Silvani, A., Asti, V., Berteotti, C., Ferrari, V., Franzini, C., Lenzi, P., Wild, J. M., Grant, D. A., Walker, A. M. & Zoccoli, G., 2006, In : Journal of Sleep Research. 15, 2, p. 206 - 211 6 p.

Research output: Contribution to journalArticleResearchpeer-review

29 Citations (Scopus)

Validation of a new noninvasive method to measure blood pressure and assess baroreflex sensitivity in preterm infants during sleep

Yiallourou, S. R., Walker, A. M. & Horne, R. S. C., 2006, In : Sleep. 29, 8, p. 1083 - 1088 6 p.

Research output: Contribution to journalArticleResearchpeer-review

9 Citations (Scopus)

Variability of the initial phase of the ventilatory response to hypoxia in sleeping infants

Richardson, H. L., Parslow, P. M., Walker, A. M., Harding, R. & Horne, R. S. C., 2006, In : Pediatric Research. 59, 5, p. 700 - 704 5 p.

Research output: Contribution to journalArticleResearchpeer-review

2005
10 Citations (Scopus)

Autoregulation of the cerebral circulation during sleep in newborn lambs

Grant, D. A., Franzini, C., Wild, J. M., Eede, K. J. & Walker, A. M., 2005, In : The Journal of Physiology. 564, 3, p. 923 - 930 8 p.

Research output: Contribution to journalArticleResearchpeer-review

23 Citations (Scopus)

Sleep-dependent changes in the coupling between heart period and arterial pressure in newborn lambs

Silvani, A., Asti, V., Bojic, T., Ferrari, V., Franzini, C., Lenzi, P., Grant, D. A., Walker, A. M. & Zoccoli, G., 2005, In : Pediatric Research. 57, 1, p. 108 - 114 7 p.

Research output: Contribution to journalArticleResearchpeer-review

15 Citations (Scopus)

Sympathetic nervous control of the cerebral circulation in sleep

Loos, N., Grant, D. A., Wild, J. M., Paul, S. L., Barfield, C., Zoccoli, G., Franzini, C. & Walker, A. M., 2005, In : Journal of Sleep Research. 14, 3, p. 275 - 283 9 p.

Research output: Contribution to journalArticleResearchpeer-review

2004

Hypotensive extremely low birth weight infants have reduced cerebral blood flow

Munro, M., Walker, A. M. & Barfield, C., 2004, In : Pediatrics. 114, 6, p. 1591 - 1596 6 p.

Research output: Contribution to journalArticleResearchpeer-review

6 Citations (Scopus)

Sleep-Related Changes in the Regulation of Cerebral Blood Flow in Newborn Lambs

Silvani, A., Bojic, T., Franzini, C., Lenzi, P., Walker, A. M., Grant, D. A., Wild, J. M. & Zoccoli, G., 2004, In : Sleep. 27, 1, p. 36 - 41 6 p.

Research output: Contribution to journalArticleResearchpeer-review

2003

Dose-dependent effects of lipopolysaccharide in a fetal lamb model of endotoxaemia

Chow, P., Yu, V. Y. H. & Walker, A. M., 2003, In : Hong Kong Journal of Paediatrics. 8, 2, p. 107 - 112 6 p.

Research output: Contribution to journalArticleResearchpeer-review

International multifocus approach on arousals in children

Sawaguchi, T., Kahn, A., Guilleminault, C., Brouillette, R., Groswasser, J., Salzarulo, P., Ficca, G., Wulbrand, H., Kohyama, J., Thach, B., Kobayashi, N., Franco, P., Harper, R., Sakurai, T., Maru, Y., Segawa, M., Gaultier, C., Dascalova, L. C., Johnson, P., Horne, R. & 15 others, Walker, A., Hori, T., Takashima, S., Varga, T., Togari, H., Kato, I., Nishida, H., Konishi, Y., Hirasawa, K., Uezono, S., Ozaki, M., Saito, Y., Osawa, M., Matoba, R. & Sawaguchi, A., 1 Mar 2003, In : International Medical Journal. 10, 1, p. 51-55 5 p.

Research output: Contribution to journalArticleResearchpeer-review

4 Citations (Scopus)

Right atrial pressure as a measure of ventricular constraint arising from positive end-expiratory pressure during mechanical ventilation of the neonatal lamb

Fauchere, J-C., Walker, A. M. & Grant, D. A., 2003, In : Critical Care Medicine. 31, 3, p. 745 - 751 7 p.

Research output: Contribution to journalArticleResearchpeer-review

2002
34 Citations (Scopus)

The Cerebral Circulation during Sleep: regulation mechanisms and functional implications

Zoccoli, G., Walker, A. M., Pierluigi, L. & Franzini, C., 2002, In : Sleep Medicine Reviews. 6, 6, p. 443 - 455 13 p.

Research output: Contribution to journalArticleResearchpeer-review

2001

Age-related differences in the distortion of the sheep lung in response to localised pleural stress

Grant, D. A., Walker, A. M. & Fauchere, J-C., 2001, In : The Journal of Physiology. 530, 1, p. 153 - 160 8 p.

Research output: Contribution to journalArticleResearchpeer-review

29 Citations (Scopus)

Left ventricular stroke volume in the fetal sheep is limited by extracardiac constraint and arterial pressure

Grant, D. A., Fauchere, J-C., Eede, K. J., Tyberg, J. V. & Walker, A. M., 2001, In : The Journal of Physiology. 535, 1, p. 231 - 239 9 p.

Research output: Contribution to journalArticleResearchpeer-review

20 Citations (Scopus)

Nitric oxide inhibition abolishes sleep-wake differences in cerebral circulation

Zoccoli, G., Grant, D. A., Wild, J. & Walker, A. M., 2001, In : American Journal of Physiology - Heart and Circulatory Physiology. 280, p. H2598 - H2606 9 p.

Research output: Contribution to journalArticleResearchpeer-review

1 Citation (Scopus)

Right atrial pressure as measure of ventricular constraint in newborn lambs

Fauchere, J-C., Walker, A. M., Skuza, E. M. & Grant, D. A., 2001, In : American Journal of Physiology - Heart and Circulatory Physiology. 280, p. H2740 - H2745 6 p.

Research output: Contribution to journalArticleResearchpeer-review

2000
21 Citations (Scopus)

Cerebral circulation in REM sleep: Is oxygen a main regulating factor

Lenzi, P., Zoccoli, G., Walker, A. M. & Franzini, C., 2000, In : Sleep Research Online. p. 77 - 85 9 p.

Research output: Contribution to journalArticleResearchpeer-review

7 Citations (Scopus)

Influence of prenatal adrenaline infusion on arterial blood gases after Caesarean delivery in the lamb

Berger, P. J., Kyriakides, M. A., Smolich, J. J., Ramsden, C. A. & Walker, A. M., 2000, In : The Journal of Physiology. p. 377 - 385 9 p.

Research output: Contribution to journalArticleResearchpeer-review

1999
24 Citations (Scopus)

Cerebral blood flow regulation in REM sleep: a model for flow-metabolism coupling

Lenzi, P., Zoccoli, G., Walker, A. M. & Franzini, C., 1999, In : Archives Italiennes de Biologie. p. 165 - 179 15 p.

Research output: Contribution to journalArticleResearchpeer-review

14 Citations (Scopus)

Cerebral blood volume measured using near-infrared spectroscopy and radiolabels in the immature lamb brain

Barfield, C., Yu, V. Y., Noma, O., Kukita, J., Cussen, L. J., Oates, A. & Walker, A. M., 1999, In : Pediatric Research. p. 50 - 56 7 p.

Research output: Contribution to journalArticleResearchpeer-review

Cerebral blood volume measured using near-infred spectroscopy and radiolabels in the immature lamb brain

Barfield, C., Yu, V. Y. H., Noma, O., Kukita, J., Cussen, L. J., Oates, A. & Walker, A. M., 1999, In : Pediatric Research. p. 50 - 56 7 p.

Research output: Contribution to journalArticleResearchpeer-review

Repetitive hyposix rapidly depresses cardio-respiratory responses during active sleep and not quiet sleep in the newborn lamb

Johnston, R. V., Grant, D. A., Wilkinson, M. H. & Walker, A. M., 1999, In : The Journal of Physiology. p. 571 - 579 9 p.

Research output: Contribution to journalArticleResearchpeer-review

1998
17 Citations (Scopus)

Cerebral circulation in sleep: vasodilatory response to cerebral hypotension

Grant, D. A., Franzini, C., Wild, J. & Walker, A. M., 1998, In : Journal of Cerebral Blood Flow and Metabolism. p. 639 - 645 7 p.

Research output: Contribution to journalArticleResearchpeer-review

55 Citations (Scopus)

Dynamic changes in arousal threshold during sleep in the human infant

Read, P. A., Horne, R. S. C., Cranage, S. M., Walker, A. M., Walker, D. & Adamson, T. M., 1998, In : Pediatric Research. p. 697 - 703 7 p.

Research output: Contribution to journalArticleResearchpeer-review

Dynamic changes in the arousal threshold during sleep in the human infant

Read, P. A., Horne, R. S. C., Cranage, S. M., Walker, A. M., Walker, D. & Adamson, T. M., 1998, In : Pediatric Research. p. 1 - 7 7 p.

Research output: Contribution to journalArticleResearchpeer-review

21 Citations (Scopus)

Major vasodilator role for nitric oxide in the gastrointestinal circulation of the mid-gestation fetal lamb

Fan, W. Q., Smolich, J. J., Wild, J., Yu, V. Y. & Walker, A. M., 1998, In : Pediatric Research. p. 344 - 350 7 p.

Research output: Contribution to journalArticleResearchpeer-review

30 Citations (Scopus)

Massive decline in lung liquid before vaginal delivery at term in the fetal lamb

Berger, P. J., Kyriakides, M. A., Smolich, J. J., Ramsden, C. A. & Walker, A. M., 1998, In : American Journal of Obstetrics and Gynecology. p. 223 - 227 5 p.

Research output: Contribution to journalArticleResearchpeer-review

Nitric oxide inhibition abolishes sleep wake differences in cerebrovascular resistances

Zoccoli, G., Grant, D. A., Wild, J., Smolich, J. J. & Walker, A. M., 1998, p. 624 - 624. 1 p.

Research output: Contribution to conferenceAbstractOther

Nitric oxide inhibition abolishes sleep wake differences in the cerebral circulation

Walker, A. M., Zoccoli, G., Grant, D. A., Wild, J. & Smolich, J. J., 1998, p. 19 - 19. 1 p.

Research output: Contribution to conferenceAbstractOther

34 Citations (Scopus)

Repetitive hypoxia rapidly depresses arousal from active sleep in newborn lambs

Johnston, R. V., Grant, D. A., Wilkinson, M. H. & Walker, A. M., 1998, In : The Journal of Physiology. p. 651 - 659 9 p.

Research output: Contribution to journalArticleResearchpeer-review

Right atrial pressure as a measure of ventricular constraint in the newborn lamb

Fauchere, J-C., Skuza, L. A., Walker, A. M., Ramsden, C. A. & Grant, D. A., 1998, p. a228, 8 - A228, 8. 1 p.

Research output: Contribution to conferenceAbstractOther

The cerebral circulation during active sleep: tonic and vasomotor changes

Franzini, C., Walker, A. M., Grant, D. A. & Wild, J., 1998, p. 92 - 92. 1 p.

Research output: Contribution to conferenceAbstractOther

Tonic and phasic vasomotor changes in the cerebral circulation of newborn lambs during active sleep

Walker, A. M., Grant, D. A., Wild, J. & Franzini, C., 1998, p. A2,3 - A2,3. 1 p.

Research output: Contribution to conferenceAbstractOther

1997

Age related differences in the distortion of the lung in response to localized pleural stress

Grant, D. A., Fauchere, J-C., Brodecky, V., Skuza, L. A., Cooke, I. R. & Walker, A. M., 1997, p. 109P - 109P. 1 p.

Research output: Contribution to conferenceAbstractOther

Cerebral blood flow and volume uisng near infrared spectroscopy and radiolabelled microspheres in the fetal lamb brain

Barfield, C., Noma, O., Kukita, J., Oates, A., Cussen, L., Yu, V. Y. & Walker, A. M., 1997, p. A29 - A29. 1 p.

Research output: Contribution to conferenceAbstractOther

Distortion of the lung in response to localized pleural stress: effects of age and positive end-expiratory pressure (PEEP)

Fauchere, J-C., Walker, A. M., Cooke, I. R. & Grant, D. A., 1997, p. P15 - P15. 1 p.

Research output: Contribution to conferenceAbstractOther

7 Citations (Scopus)

Left ventricular norepinephrine and epinephrine kinetics at birth in lambs

Smolich, J. J., Cox, H. S., Berger, P. J., Walker, A. M., Eisenhofer, G. & Esler, M. D., 1997, In : Circulation Research. p. 438 - 447 10 p.

Research output: Contribution to journalArticleResearchpeer-review

Nitric oxide regulates transmural blood flow in the fetal intestine

Fan, W. Q., Smolich, J. J., Cussen, L., Yu, V. Y. & Walker, A. M., 1997, p. A62 - A62. 1 p.

Research output: Contribution to conferenceAbstractOther