Research Topics
Species | Andrew H KempSummaryAffiliation: University of Sydney Country: Australia Publications
| Collaborators
|
Detail Information
Publications
Impact of depression heterogeneity on attention: an auditory oddball event related potential studyAndrew H Kemp
The School of Psychology, Brennan MacCallum, Building A18, University of Sydney, NSW 2006, Australia
J Affect Disord 123:202-7. 2010..Major depressive disorder is associated with a reduced ability to attend and concentrate, however, the extent to which attentional impairment is dependent on subtype remains to be clarified...- Improving the prediction of treatment response in depression: integration of clinical, cognitive, psychophysiological, neuroimaging, and genetic measuresAndrew H Kemp
Brain Dynamics Centre, Discipline of Psychological Medicine, Westmead Millennium Institute, University of Sydney, Westmead Hospital, Australia
CNS Spectr 13:1066-86; quiz 1087-8. 2008..It is proposed that a focus on standardized testing methodologies across multiple testing modalities and their integration will be crucial for translation of research findings into clinical practice... - Heterogeneity of non-conscious fear perception in posttraumatic stress disorder as a function of physiological arousal: an fMRI studyAndrew H Kemp
School of Psychology, University of Sydney, Sydney, NSW, Australia
Psychiatry Res 174:158-61. 2009.... - Association between BDNF Val66Met polymorphism and trait depression is mediated via resting EEG alpha band activityJustine M Gatt
The Brain Dynamics Centre, Westmead Millennium Institute, Westmead Hospital and Western Clinical School, University of Sydney, Sydney, Australia
Biol Psychol 79:275-84. 2008..They suggest that the BDNF Met/Met homozygote has a direct impact on memory systems, but impacts trait depression via the secondary effects of neural changes... - Neural biases to covert and overt signals of fear: dissociation by trait anxiety and depressionLeanne M Williams
University of Sydney, Westmead Hospital, Sydney, NSW, Australia
J Cogn Neurosci 19:1595-608. 2007.... - Mapping frontal-limbic correlates of orienting to change detectionLeanne M Williams
The Brain Dynamics Centre, Westmead Millennium Institute and Western Clinical School, University of Sydney, Westmead Hospital, New South Wales, Sydney, Australia
Neuroreport 18:197-202. 2007.... - Anterior cingulate activity to salient stimuli is modulated by autonomic arousal in posttraumatic stress disorderKim L Felmingham
The Brain Dynamics Centre, Westmead Millenium Institute and Western Clinical School, University of Sydney, Westmead Hospital, NSW 2145, Australia
Psychiatry Res 173:59-62. 2009..This reduction in vACC in PTSD relative to controls was not apparent in without-SCR responses. These findings suggest that a reduction in vACC in PTSD occurs specifically when arousal networks are engaged... - Fronto-temporal alterations within the first 200 ms during an attentional task distinguish major depression, non-clinical participants with depressed mood and healthy controls: a potential biomarker?Andrew H Kemp
Brain Dynamics Centre, Westmead Millennium Institute, Westmead Hospital, Australia
Hum Brain Mapp 30:602-14. 2009..This P200 increase in depression could provide a potential mechanism for the attentional impairment frequently observed in depression and consequent alterations in the P300 may differentiate clinically significant depression... - Influence of comorbid depression on fear in posttraumatic stress disorder: an fMRI studyAndrew H Kemp
Brain Dynamics Centre, Westmead Hospital and Western Clinical, School University of Sydney, Sydney, NSW, Australia
Psychiatry Res 155:265-9. 2007..Amygdala and medial prefrontal activity was reduced in PTSD-depression compared to PTSD-alone samples, highlighting the need to account for comorbidity... - The mellow years?: neural basis of improving emotional stability over ageLeanne M Williams
Brain Dynamics Centre, Westmead Millenium Institute and Western Clinical School, University of Sydney, Westmead Hospital, Westmead, Sydney, New South Wales, 2145, Australia
J Neurosci 26:6422-30. 2006.... - Amygdala-prefrontal dissociation of subliminal and supraliminal fearLeanne M Williams
Brain Dynamics Centre, Westmead Hospital, Westmead Sydney, NSW, Australia
Hum Brain Mapp 27:652-61. 2006.... - Enhanced amygdala and medial prefrontal activation during nonconscious processing of fear in posttraumatic stress disorder: an fMRI studyRichard A Bryant
Brain Dynamics Centre, Westmead Hospital, Sydeny, New South Wales, Australia
Hum Brain Mapp 29:517-23. 2008..These data extend existing models by suggesting that the impaired MPFC activation in PTSD may be limited to conscious fear processing. Hum Brain Mapp, 2008. (c) 2007 Wiley-Liss, Inc... - Duration of posttraumatic stress disorder predicts hippocampal grey matter lossKim Felmingham
Brain Dynamics Centre, Westmead Millennium Institute, Westmead Hospital, Australia
Neuroreport 20:1402-6. 2009..This pattern suggests that prolonged PTSD may have cumulative adverse effects on hippocampal volume, highlighting the potential role of genetic-environmental interactions... - Trauma modulates amygdala and medial prefrontal responses to consciously attended fearLeanne M Williams
Brain Dynamics Centre, Westmead Hospital, Westmead, NSW 2145, Australia
Neuroimage 29:347-57. 2006..Over the time course, trauma was related to a distinct pattern of ACC and amygdala connections. The findings suggest that major life trauma may disrupt the normal pattern of medial prefrontal and amygdala regulation... - Distinct amygdala-autonomic arousal profiles in response to fear signals in healthy males and femalesLeanne M Williams
The Brain Dynamics Centre, Westmead Millenium Institute, Acacia House, Westmead Hospital, Westmead, NSW 2145, Australia
Neuroimage 28:618-26. 2005..We suggest that distinct evolutionary pressures might contribute to a lower threshold for vigilance to signals of danger in females, reflected in a profile of sustained amygdala-arousal interaction... - A genotype-endophenotype-phenotype path model of depressed mood: integrating cognitive and emotional markersJustine M Gatt
The Brain Dynamics Center, Westmead Millennium Institute, Westmead Hospital and Western Clinical School, University of Sydney, NSW 2145, Australia
J Integr Neurosci 6:75-104. 2007..The brain-derived neurotrophic factor (BDNF) 66Met allele may contribute to both cognitive and emotional aspects of the depression phenotype... - The neural networks of inhibitory control in posttraumatic stress disorderErin Falconer
Brain Dynamics Centre, Westmead Millenium Institute, Westmead Hospital, Westmead, NSW, Australia
J Psychiatry Neurosci 33:413-22. 2008..To date, however, no PTSD neuroimaging study has directly examined PTSD-related changes in executive inhibition. Our objective was to investigate the hypothesis that executive inhibitory control networks are compromised in PTSD... - Impact of depression and antidepressant treatment on heart rate variability: a review and meta-analysisAndrew H Kemp
School of Psychology, University of Sydney, Sydney, Australia
Biol Psychiatry 67:1067-74. 2010..The objective of the current report is to examine with meta-analysis the impact of depression and antidepressant treatment on HRV in depressed patients without CVD... - Predatory threat induces huddling in adolescent rats and residual changes in early adulthood suggestive of increased resilienceMichael D Kendig
School of Psychology, University of Sydney, Sydney, NSW 2006, Australia
Behav Brain Res 225:405-14. 2011..Overall, these findings suggest greater resilience in adulthood after chronic adolescent stress, indicating that coping with predators may be in some ways a form of early environmental enrichment... - A direct brainstem-amygdala-cortical 'alarm' system for subliminal signals of fearBelinda J Liddell
School of Psychology, University of Sydney, NSW 2006, Australia
Neuroimage 24:235-43. 2005..This network may represent an evolutionary adaptive neural 'alarm' system for rapid alerting to sources of threat, without the need for conscious appraisal... - Depression, comorbid anxiety disorders, and heart rate variability in physically healthy, unmedicated patients: implications for cardiovascular riskAndrew H Kemp
School of Psychology, University of Sydney, Sydney, New South Wales, Australia
PLoS ONE 7:e30777. 2012.... - The contribution of BDNF and 5-HTT polymorphisms and early life stress to the heterogeneity of major depressive disorder: a preliminary studyCandice R Quinn
Discipline of Psychiatry, Sydney Medical School, University of Sydney, Australia
Aust N Z J Psychiatry 46:55-63. 2012..The aim of the current study was to investigate the contribution of early life stress (ELS), BDNF (Val versus Met alleles) and 5-HTT polymorphisms (L versus S alleles) to melancholic (n = 65) and non-melancholic depression (n = 59)... - Thalamocortical changes in major depression probed by deconvolution and physiology-based modelingCliff C Kerr
School of Physics, University of Sydney, New South Wales, Australia
Neuroimage 54:2672-82. 2011..These findings suggest possible physiological mechanisms underlying different depression subtypes, and may eventually prove useful in motivating new physiology-based diagnostic methods...