Andrew H Kemp

Summary

Affiliation: University of Sydney
Country: Australia

Publications

  1. doi Impact of depression heterogeneity on attention: an auditory oddball event related potential study
    Andrew H Kemp
    The School of Psychology, Brennan MacCallum, Building A18, University of Sydney, NSW 2006, Australia
    J Affect Disord 123:202-7. 2010
  2. ncbi Improving the prediction of treatment response in depression: integration of clinical, cognitive, psychophysiological, neuroimaging, and genetic measures
    Andrew 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
  3. doi Heterogeneity of non-conscious fear perception in posttraumatic stress disorder as a function of physiological arousal: an fMRI study
    Andrew H Kemp
    School of Psychology, University of Sydney, Sydney, NSW, Australia
    Psychiatry Res 174:158-61. 2009
  4. doi Association between BDNF Val66Met polymorphism and trait depression is mediated via resting EEG alpha band activity
    Justine 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
  5. ncbi Neural biases to covert and overt signals of fear: dissociation by trait anxiety and depression
    Leanne M Williams
    University of Sydney, Westmead Hospital, Sydney, NSW, Australia
    J Cogn Neurosci 19:1595-608. 2007
  6. doi Anterior cingulate activity to salient stimuli is modulated by autonomic arousal in posttraumatic stress disorder
    Kim 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
  7. doi 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
  8. ncbi Mapping frontal-limbic correlates of orienting to change detection
    Leanne 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
  9. ncbi Influence of comorbid depression on fear in posttraumatic stress disorder: an fMRI study
    Andrew H Kemp
    Brain Dynamics Centre, Westmead Hospital and Western Clinical, School University of Sydney, Sydney, NSW, Australia
    Psychiatry Res 155:265-9. 2007
  10. ncbi The mellow years?: neural basis of improving emotional stability over age
    Leanne 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

Collaborators

Detail Information

Publications36

  1. doi Impact of depression heterogeneity on attention: an auditory oddball event related potential study
    Andrew 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...
  2. ncbi Improving the prediction of treatment response in depression: integration of clinical, cognitive, psychophysiological, neuroimaging, and genetic measures
    Andrew 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...
  3. doi Heterogeneity of non-conscious fear perception in posttraumatic stress disorder as a function of physiological arousal: an fMRI study
    Andrew H Kemp
    School of Psychology, University of Sydney, Sydney, NSW, Australia
    Psychiatry Res 174:158-61. 2009
    ....
  4. doi Association between BDNF Val66Met polymorphism and trait depression is mediated via resting EEG alpha band activity
    Justine 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...
  5. ncbi Neural biases to covert and overt signals of fear: dissociation by trait anxiety and depression
    Leanne M Williams
    University of Sydney, Westmead Hospital, Sydney, NSW, Australia
    J Cogn Neurosci 19:1595-608. 2007
    ....
  6. doi Anterior cingulate activity to salient stimuli is modulated by autonomic arousal in posttraumatic stress disorder
    Kim 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...
  7. doi 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...
  8. ncbi Mapping frontal-limbic correlates of orienting to change detection
    Leanne 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
    ....
  9. ncbi Influence of comorbid depression on fear in posttraumatic stress disorder: an fMRI study
    Andrew 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...
  10. ncbi The mellow years?: neural basis of improving emotional stability over age
    Leanne 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
    ....
  11. ncbi Amygdala-prefrontal dissociation of subliminal and supraliminal fear
    Leanne M Williams
    Brain Dynamics Centre, Westmead Hospital, Westmead Sydney, NSW, Australia
    Hum Brain Mapp 27:652-61. 2006
    ....
  12. doi Heart rate variability predicts alcohol craving in alcohol dependent outpatients: further evidence for HRV as a psychophysiological marker of self-regulation
    Daniel S Quintana
    SCAN Research and Teaching Unit, School of Psychology, University of Sydney, Australia
    Drug Alcohol Depend 132:395-8. 2013
    ..Thus, the aim of the present study was to determine whether HRV predicts alcohol craving in dependent individuals in the community...
  13. doi Heart rate variability is associated with emotion recognition: direct evidence for a relationship between the autonomic nervous system and social cognition
    Daniel S Quintana
    SCAN Research and Teaching Unit, School of Psychology, University of Sydney, Australia
    Int J Psychophysiol 86:168-72. 2012
    ..Our data suggests that increased HRV may provide a novel marker of one's ability to recognize emotions in humans. Implications for understanding the biological basis of emotion recognition, and social impairment in humans are discussed...
  14. ncbi Trauma modulates amygdala and medial prefrontal responses to consciously attended fear
    Leanne 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...
  15. doi Duration of posttraumatic stress disorder predicts hippocampal grey matter loss
    Kim 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...
  16. ncbi Enhanced amygdala and medial prefrontal activation during nonconscious processing of fear in posttraumatic stress disorder: an fMRI study
    Richard 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...
  17. ncbi Distinct amygdala-autonomic arousal profiles in response to fear signals in healthy males and females
    Leanne 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...
  18. ncbi Acute neural effects of selective serotonin reuptake inhibitors versus noradrenaline reuptake inhibitors on emotion processing: Implications for differential treatment efficacy
    Tim Outhred
    Discipline of Psychiatry, Sydney Medical School, University of Sydney, Royal North Shore Hospital, NSW 2065, Australia SCAN Research and Teaching Unit, School of Psychology, University of Sydney, NSW 2006, Australia Electronic address
    Neurosci Biobehav Rev 37:1786-800. 2013
    ..Findings are interpreted within a novel model of the differential effects of SSRIs and NRIs on emotion processing. ..
  19. ncbi A genotype-endophenotype-phenotype path model of depressed mood: integrating cognitive and emotional markers
    Justine 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...
  20. pmc The neural networks of inhibitory control in posttraumatic stress disorder
    Erin 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...
  21. ncbi Impact of acute administration of escitalopram on the processing of emotional and neutral images: a randomized crossover fMRI study of healthy women
    Tim Outhred
    Discipline of Psychiatry, Sydney Medical School, University of Sydney, Royal North Shore Hospital, Australia SCAN Research and Teaching Unit, School of Psychology, University of Sydney, Australia
    J Psychiatry Neurosci 39:267-75. 2014
    ..The present study therefore examined the impact of a single dose of the selective serotonin reuptake inhibitor escitalopram (20 mg) on positive, negative and neutral stimuli using pharmaco-fMRI...
  22. doi The contribution of BDNF and 5-HTT polymorphisms and early life stress to the heterogeneity of major depressive disorder: a preliminary study
    Candice 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)...
  23. doi Impact of depression and antidepressant treatment on heart rate variability: a review and meta-analysis
    Andrew 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...
  24. ncbi Mindfulness meditation, well-being, and heart rate variability: a preliminary investigation into the impact of intensive Vipassana meditation
    Jonathan R Krygier
    SCAN Research and Teaching Unit, School of Psychology, University of Sydney, Australia School of Psychology, University of Sydney, Australia
    Int J Psychophysiol 89:305-13. 2013
    ..These results are also consistent with changes in normalised HRV reported in other meditation studies...
  25. doi A meta-analysis on the impact of alcohol dependence on short-term resting-state heart rate variability: implications for cardiovascular risk
    Daniel S Quintana
    School of Psychology, University of Sydney, Sydney, NSW, Australia
    Alcohol Clin Exp Res 37:E23-9. 2013
    ..However, prior studies on the impact of alcohol dependence on HRV have reported contradictory findings highlighting the need for a meta-analysis...
  26. doi The impact of depression heterogeneity on inhibitory control
    Candice R Quinn
    Discipline of Psychiatry, Sydney Medical School, University of Sydney, Australia
    Aust N Z J Psychiatry 46:374-83. 2012
    ..However, inconsistencies have been found across studies. Depression is a heterogeneous disorder and these inconsistencies may therefore relate to heterogeneity in relatively small samples...
  27. ncbi The relationship between mental and physical health: insights from the study of heart rate variability
    Andrew H Kemp
    SCAN Research and Teaching Unit, School of Psychology, University of Sydney, Australia Discipline of Psychiatry, University of Sydney, Australia Hospital Universitário, University of Sao Paulo, Sao Paulo, Brazil Electronic address
    Int J Psychophysiol 89:288-96. 2013
    ....
  28. doi Moderate alcohol intake is related to increased heart rate variability in young adults: implications for health and well-being
    Daniel S Quintana
    SCAN Research and Teaching Unit, School of Psychology, University of Sydney, Sydney, Australia Brain and Mind Research Institute, University of Sydney, Sydney, Australia
    Psychophysiology 50:1202-8. 2013
    ..Regardless, results highlight HRV as a candidate mechanism for the findings reported in the epidemiological literature. ..
  29. pmc Depression, comorbid anxiety disorders, and heart rate variability in physically healthy, unmedicated patients: implications for cardiovascular risk
    Andrew H Kemp
    School of Psychology, University of Sydney, Sydney, New South Wales, Australia
    PLoS ONE 7:e30777. 2012
    ....
  30. pmc Matter over mind: a randomised-controlled trial of single-session biofeedback training on performance anxiety and heart rate variability in musicians
    Ruth Wells
    SCAN Research and Teaching Unit, School of Psychology, University of Sydney, Sydney, Australia
    PLoS ONE 7:e46597. 2012
    ..Objective: This randomised-controlled study explored the impact of a single 30-minute session of HRV BF on anxiety in response to a highly stressful music performance...
  31. pmc Oxytocin increases heart rate variability in humans at rest: implications for social approach-related motivation and capacity for social engagement
    Andrew H Kemp
    School of Psychology, University of Sydney, Sydney, New South Wales, Australia
    PLoS ONE 7:e44014. 2012
    ..Furthermore, no studies have examined the impact of OT on HRV under resting conditions, which provides an index of maximal capacity for social engagement...
  32. doi Predatory threat induces huddling in adolescent rats and residual changes in early adulthood suggestive of increased resilience
    Michael 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...
  33. ncbi A direct brainstem-amygdala-cortical 'alarm' system for subliminal signals of fear
    Belinda 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...
  34. ncbi Impact of escitalopram on vagally mediated cardiovascular function in healthy participants: implications for understanding differential age-related, treatment emergent effects
    Andrew H Kemp
    SCAN Research and Teaching Unit, School of Psychology, University of Sydney, Darlington, NSW, 2006, Australia
    Psychopharmacology (Berl) 231:2281-90. 2014
    ..Decreased heart rate (HR) and an increase in its variability (HRV) improve one's capacity to adapt to environmental stress and attenuate risk for suicide...
  35. doi The impact of melancholia versus non-melancholia on resting-state, EEG alpha asymmetry: electrophysiological evidence for depression heterogeneity
    Candice R Quinn
    Discipline of Psychiatry, Sydney Medical School, University of Sydney, Australia
    Psychiatry Res 215:614-7. 2014
    ..These results may reflect an increase in approach tendencies in patients with non-melancholia including reassurance seeking, anger or irritable aggression. Findings highlight the need for further research on the heterogeneity MDD. ..
  36. doi Thalamocortical changes in major depression probed by deconvolution and physiology-based modeling
    Cliff 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...