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Andrew Petkus

Associate Professor of Clinical Neurology

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Phone +1 323 442 8050
Email petkus@usc.edu
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Publications

  • Terminal Increases in Depressive Symptoms in a Multinational Twin Consortium. Psychol Sci. 2025 Aug; 36(8):637-655.. View in PubMed
  • Sequence of decline on the NIH-toolbox cognitive battery in a predominantly Latino sample with autosomal dominant Alzheimer’s disease. J Alzheimers Dis. 2025 Feb; 103(4):1150-1160.. View in PubMed
  • Motor abilities and cognitive performance in Latinos with autosomal dominant Alzheimer’s disease. J Prev Alzheimers Dis. 2025 Jan; 12(1):100010.. View in PubMed
  • Longitudinal associations between physical performance and cognition in individuals with Parkinson’s disease. Clin Park Relat Disord. 2025; 13:100370.. View in PubMed
  • Data-driven sequence of cognitive decline in people with Parkinson’s disease. J Neurol Neurosurg Psychiatry. 2024 Nov 18; 95(12):1123-1131.. View in PubMed
  • The Association between Exposure to Fine Particulate Matter and MRI-Assessed Locus Coeruleus Integrity in the Vietnam Era Twin Study of Aging (VETSA). Environ Health Perspect. 2024 Jul; 132(7):77006.. View in PubMed
  • High baseline perivascular space volume in basal ganglia is associated with attention and executive function decline in Parkinson’s disease. Brain Behav. 2024 Jul; 14(7):e3607.. View in PubMed
  • 20-year depressive symptoms, dementia, and structural neuropathology in older women. Alzheimers Dement. 2024 05; 20(5):3472-3484.. View in PubMed
  • Increased perivascular space volume in white matter and basal ganglia is associated with cognition in Parkinson’s Disease. Brain Imaging Behav. 2024 Feb; 18(1):57-65.. View in PubMed
  • Association between late-life air pollution exposure and medial temporal lobe atrophy in older women. medRxiv. 2023 Nov 29.. View in PubMed
  • Alzheimer’s Related Neurodegeneration Mediates Air Pollution Effects on Medial Temporal Lobe Atrophy. medRxiv. 2023 Nov 29.. View in PubMed
  • Longitudinal analyses indicate bidirectional associations between loneliness and health. Aging Ment Health. 2023 Jun; 27(6):1217-1225.. View in PubMed
  • Physical activity intensity is associated with cognition and functional connectivity in Parkinson’s disease. Parkinsonism Relat Disord. 2022 11; 104:7-14.. View in PubMed
  • Ambient air pollution exposure and increasing depressive symptoms in older women: The mediating role of the prefrontal cortex and insula. Sci Total Environ. 2022 Jun 01; 823:153642.. View in PubMed
  • Air quality improvement and cognitive decline in community-dwelling older women in the United States: A longitudinal cohort study. PLoS Med. 2022 02; 19(2):e1003893.. View in PubMed
  • Association of improved air quality with lower dementia risk in older women. Proc Natl Acad Sci U S A. 2022 01 11; 119(2).. View in PubMed
  • Cognition and motor learning in a Parkinson’s disease cohort: importance of recall in episodic memory. Neuroreport. 2021 10 06; 32(14):1153-1160.. View in PubMed
  • Ambient Air Pollution and Long-Term Trajectories of Episodic Memory Decline among Older Women in the WHIMS-ECHO Cohort. Environ Health Perspect. 2021 09; 129(9):97009.. View in PubMed
  • Cognitive Reserve, Alzheimer’s Neuropathology, and Risk of Dementia: A Systematic Review and Meta-Analysis. Neuropsychol Rev. 2021 06; 31(2):233-250.. View in PubMed
  • Thalamic volume mediates associations between cardiorespiratory fitness (VO2max) and cognition in Parkinson’s disease. Parkinsonism Relat Disord. 2021 05; 86:19-26.. View in PubMed
  • The importance of social support, engagement in leisure activities, and cognitive reserve in older adulthood. Int Psychogeriatr. 2021 05; 33(5):433-435.. View in PubMed
  • Cognitive effects of theta frequency bilateral subthalamic nucleus stimulation in Parkinson’s disease: A pilot study. Brain Stimul. 2021 Mar-Apr; 14(2):230-240.. View in PubMed
  • PM2.5 Associated With Gray Matter Atrophy Reflecting Increased Alzheimer Risk in Older Women. Neurology. 2021 02 22; 96(8):e1190-e1201.. View in PubMed
  • Outdoor air pollution exposure and inter-relation of global cognitive performance and emotional distress in older women. Environ Pollut. 2021 Feb 15; 271:116282.. View in PubMed
  • Air Pollution and the Dynamic Association Between Depressive Symptoms and Memory in Oldest-Old Women. J Am Geriatr Soc. 2021 02; 69(2):474-484.. View in PubMed
  • The Effects of Cardiorespiratory and Motor Skill Fitness on Intrinsic Functional Connectivity of Neural Networks in Individuals with Parkinson’s Disease. Brain Plast. 2021; 7(2):77-95.. View in PubMed
  • Associations Between Air Pollution Exposure and Empirically Derived Profiles of Cognitive Performance in Older Women. J Alzheimers Dis. 2021; 84(4):1691-1707.. View in PubMed
  • Trajectories of Big Five Personality Traits: A Coordinated Analysis of 16 Longitudinal Samples. Eur J Pers. 2020 May; 34(3):301-321.. View in PubMed
  • Neuroticism predicts fear of falling after hip fracture. Int J Geriatr Psychiatry. 2020 05; 35(5):498-506.. View in PubMed
  • Mild cognitive impairment, psychiatric symptoms, and executive functioning in patients with Parkinson’s disease. Int J Geriatr Psychiatry. 2020 04; 35(4):396-404.. View in PubMed
  • Exposure to fine particulate matter and temporal dynamics of episodic memory and depressive symptoms in older women. Environ Int. 2020 02; 135:105196.. View in PubMed
  • Particulate matter and episodic memory decline mediated by early neuroanatomic biomarkers of Alzheimer’s disease. Brain. 2020 01 01; 143(1):289-302.. View in PubMed
  • Particulate Air Pollutants and Trajectories of Depressive Symptoms in Older Women. Am J Geriatr Psychiatry. 2019 10; 27(10):1083-1096.. View in PubMed
  • General and domain-specific cognitive reserve, mild cognitive impairment, and dementia risk in older women. Alzheimers Dement (N Y). 2019; 5:118-128.. View in PubMed
  • Worse cognitive performance predicts increased anxiety and depressive symptoms in patients with Parkinson’s disease: A bidirectional analysis. Neuropsychology. 2019 Jan; 33(1):35-46.. View in PubMed
  • Integrated Exposure Therapy and Exercise Reduces Fear of Falling and Avoidance in Older Adults: A Randomized Pilot Study. Am J Geriatr Psychiatry. 2018 08; 26(8):849-859.. View in PubMed
  • Age Differences in Death and Suicidal Ideation in Anxious Primary Care Patients. Clin Gerontol. 2018 Jul-Sep; 41(4):271-281.. View in PubMed
  • Childhood Trauma Is Associated With Poorer Cognitive Performance in Older Adults. J Clin Psychiatry. 2018 Jan/Feb; 79(1).. View in PubMed
  • Gene-environment interplay in depressive symptoms: moderation by age, sex, and physical illness. Psychol Med. 2017 Jul; 47(10):1836-1847.. View in PubMed
  • Temporal dynamics of cognitive performance and anxiety across older adulthood. Psychol Aging. 2017 05; 32(3):278-292.. View in PubMed
  • Fear of Falling after Hip Fracture: Prevalence, Course, and Relationship with One-Year Functional Recovery. Am J Geriatr Psychiatry. 2016 12; 24(12):1228-1236.. View in PubMed
  • Activity, balance, learning, and exposure (ABLE): a new intervention for fear of falling. Int J Geriatr Psychiatry. 2016 07; 31(7):791-8.. View in PubMed
  • Stability of Genetic and Environmental Contributions to Anxiety Symptoms in Older Adulthood. Behav Genet. 2016 07; 46(4):492-505.. View in PubMed
  • Anxiety is associated with increased risk of dementia in older Swedish twins. Alzheimers Dement. 2016 Apr; 12(4):399-406.. View in PubMed
  • Age moderates response to acceptance and commitment therapy vs. cognitive behavioral therapy for chronic pain. Int J Geriatr Psychiatry. 2016 Mar; 31(3):302-8.. View in PubMed
  • A new measure of fear of falling: psychometric properties of the fear of falling questionnaire revised (FFQ-R). Int Psychogeriatr. 2015 Jul; 27(7):1121-33.. View in PubMed
  • Anxiety and cognitive impairment in homebound older adults. Int J Geriatr Psychiatry. 2013 Sep; 28(9):989-90.. View in PubMed
  • Information processing bias and pharmacotherapy outcome in older adults with generalized anxiety disorder. J Anxiety Disord. 2013 Aug; 27(6):592-7.. View in PubMed
  • Age differences in treatment response to a collaborative care intervention for anxiety disorders. Br J Psychiatry. 2013 Jul; 203(1):65-72.. View in PubMed
  • Antidepressant medication augmented with cognitive-behavioral therapy for generalized anxiety disorder in older adults. Am J Psychiatry. 2013 Jul; 170(7):782-9.. View in PubMed
  • Acceptance and Commitment Therapy with Older Adults: Rationale and Considerations. Cogn Behav Pract. 2013 Feb; 20(1):47-56.. View in PubMed
  • History of sexual assault is associated with greater declines in executive functioning in older adults with APOE epsilon4. J Gerontol B Psychol Sci Soc Sci. 2012 Nov; 67(6):653-9.. View in PubMed
  • Thought suppression is associated with psychological distress in homebound older adults. Depress Anxiety. 2012 Mar; 29(3):219-25.. View in PubMed
  • Six-month longitudinal patterns of mental health treatment utilization by older adults with depressive symptoms. Psychiatr Serv. 2011 Nov; 62(11):1353-60.. View in PubMed
  • A randomized, controlled trial of acceptance and commitment therapy and cognitive-behavioral therapy for chronic pain. Pain. 2011 Sep; 152(9):2098-2107.. View in PubMed
  • Acceptance and Commitment Therapy for generalized anxiety disorder in older adults: a preliminary report. Behav Ther. 2011 Mar; 42(1):127-34.. View in PubMed
  • Evaluation of the factor structure and psychometric properties of the Brief Symptom Inventory-18 with homebound older adults. Int J Geriatr Psychiatry. 2010 Jun; 25(6):578-87.. View in PubMed
  • Behavioral health service utilization and preferences of older adults receiving home-based aging services. Am J Geriatr Psychiatry. 2010 Jun; 18(6):491-501.. View in PubMed
  • Trauma history is associated with psychological distress and somatic symptoms in homebound older adults. Am J Geriatr Psychiatry. 2009 Sep; 17(9):810-8.. View in PubMed
  • Older adults are less accurate than younger adults at identifying symptoms of anxiety and depression. J Nerv Ment Dis. 2009 Aug; 197(8):623-6.. View in PubMed
  • Behavioral health needs and problem recognition by older adults receiving home-based aging services. Int J Geriatr Psychiatry. 2009 Apr; 24(4):400-8.. View in PubMed

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