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Douglas Garrett

© n/a
Senior Researcher
+49 30 82406-216
garrett [at] mpib-berlin [dot] mpg [dot] de
297

Short CV: 

MA/Ph.D., 2011, Department of Psychology, University of Toronto, Toronto, ON, Canada.

BA (Honours, Co-op, with Distinction), 2003, Department of Psychology, Unviersity of Victoria, Victoria, BC, Canada. 

Project participation: 

Research Interests: 

As leader of the Lifespan Neural Dynamics Group (LNDG) within the Max Planck UCL Centre for Computational Psychiatry and Ageing Research, my interests center on the examination of EEG/fMRI brain signal variability and dynamics in relation to lifespan development, cognition, neurochemistry, network dynamics, and brain structure. Accordingly, I have an inherent multivariate methods focus that allows the examination of brain signal variability phenomena across multiple levels of analysis. The LNDG is also funded by a recent Emmy Noether Programme grant from the DFG (2017-2021). 


Selected Literature: 
Key literature
Garrett, D.D., Lindenberger, U., Hoge, R., and Gauthier, C.J. (in press). Age differences in brain signal variability are robust to multiple vascular controls. Scientific Reports.
 
*Grandy, T., *Garrett, D.D., Schmiedek, F., and Werkle-Bergner, M. (2016). On the estimation of brain signal entropy from sparse neuroimaging data. Scientific Reports, 6, 23073. 
 
Garrett, D.D., Nagel, I.E., Preuschhof, C., Burzynska, A.Z., Marchner, J., Wiegert, S., Jungehülsing, G., Nyberg, L., Villringer, A., Li, S-C., Heekeren, H.E., Bäckman, L., & Lindenberger, U. (2015). Amphetamine modulates brain signal variability and working memory in younger and older adults. Proceedings of the National Academy of Sciences of the United States of America, 112,7593-7598. 
 
Garrett, D.D., McIntosh, A.R., & Grady, C.L. (2014). Brain signal variability is parametrically modifiable. Cerebral Cortex, 24, 2931-2940.
 
Garrett, D.D., Samanez-Larkin, G.L., MacDonald, S.W.S., Lindenberger, U., McIntosh, A.R., & Grady, C.L. (2013). Moment-to-moment brain signal variability: A next frontier in brain mapping? Neuroscience & Biobehavioral Reviews, 37, 610-624.
 
Garrett, D.D., Kovacevic, N., McIntosh, A.R., & Grady, C.L. (2013). The modulation of BOLD variability between cognitive states varies by age and processing speed. Cerebral Cortex, 23, 684-693.
 
Garrett, D.D., Kovacevic, N., McIntosh, A.R., & Grady, C.L. (2011). The importance of being variable. Journal of Neuroscience, 31, 4496-4503.
 
Garrett, D.D., Kovacevic, N., McIntosh, A.R. & Grady, C.L. (2010). Blood oxygen level-dependent signal variability is more than just noise. Journal of Neuroscience, 30, 4914-4921.
 
 

For more information, go to: douglasdgarrett.com

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Peer reviewed articles
Garrett, D.D., Lindenberger, U., Hoge, R., and Gauthier, C.J. (in press). Age differences in brain signal variability are robust to multiple vascular controls. Scientific Reports.
 
Nyberg, L., Karaljia, N., Salami, A., Andersson, M., Wåhlin, A., Kaboovand, N., Axelsson, J., Rieckmann, A., Papenberg, G., Garrett, D.D., Ricklund, K., Lövden, M., Lindeberger, U., Köhncke, Y., and Bäckman, L. (2016). Dopamine D2 receptor availability is linked to striato-hippocampal functional connectivity and episodic memory. Proceedings of the National Academy of Sciences of the United States of America, 113, 7918-7923. Link
 
*Grandy, T., *Garrett, D.D., Schmiedek, F., and Werkle-Bergner, M. (2016). On the estimation of brain signal entropy from sparse neuroimaging data. Scientific Reports, 6, 23073. Link
 
Guitart-Masip, M., Salemi, A., Garrett, D.D., Rieckmann, A., Lindenberger, U., & Bäckman, L. (2016). BOLD variability is related to dopaminergic transmission and cognitive aging. Cerebral Cortex, 26, 2074–2083 . Link
 
Garrett, D.D., Nagel, I.E., Preuschhof, C., Burzynska, A.Z., Marchner, J., Wiegert, S., Jungehülsing, G., Nyberg, L., Villringer, A., Li, S-C., Heekeren, H.E., Bäckman, L., & Lindenberger, U. (2015). Amphetamine modulates brain signal variability and working memory in younger and older adults. Proceedings of the National Academy of Sciences of the United States of America, 112,7593-7598. Link
 
Garrett, D.D., McIntosh, A.R., & Grady, C.L. (2014). Brain signal variability is parametrically modifiable. Cerebral Cortex, 24, 2931-2940. Link
 
Grady, C.L. & Garrett, D.D. (2013). Understanding variability in the BOLD signal and why it matters for aging. Brain Imaging and Behavior, doi: 10.1007/s11682-013-9253-0. Link
 
*Burzynska, A.Z., *Garrett, D.D., Preuschhof, C., Nagel, I.E., Li, S-C., Bäckman, L., Heekeren, H.E., & Lindenberger, U. (2013). A scaffold for efficiency in the human brain. Journal of Neuroscience, 33, 17150-17159. Link
 
Garrett, D.D., Samanez-Larkin, G.L., MacDonald, S.W.S., Lindenberger, U., McIntosh, A.R., & Grady, C.L. (2013). Moment-to-moment brain signal variability: A next frontier in brain mapping? Neuroscience & Biobehavioral Reviews, 37, 610-624. Link
 
Garrett, D.D., Kovacevic, N., McIntosh, A.R., & Grady, C.L. (2013). The modulation of BOLD variability between cognitive states varies by age and processing speed. Cerebral Cortex, 23, 684-693. Link
 
Garrett, D.D., MacDonald, S.W.S., & Craik, F.I.M. (2012). Intraindividual reaction time variability is malleable: Feedback- and cognitive reserve-related reductions in variability with age. Frontiers in Human Neuroscience, 6, 101. doi: 10.3389/fnhum.2012.00101. Link
 
Garrett, D.D., Kovacevic, N., McIntosh, A.R., & Grady, C.L. (2011). The importance of being variable. Journal of Neuroscience, 31, 4496-4503. Link
 
Garrett, D.D., Kovacevic, N., McIntosh, A.R. & Grady, C.L. (2010). Blood oxygen level-dependent signal variability is more than just noise. Journal of Neuroscience, 30, 4914-4921. Link
 
Garrett, D.D., Grady, C.L., & Hasher, L. (2010). Everyday memory compensation: The impact of cognitive reserve, subjective memory, and stress. Psychology and Aging, 25, 74-83. Link
 
McIntosh, A.R., Kovacevic, N., Lippe, S, Garrett, D.D., Grady, C.L., & Jirsa, V. (2010). The development of a noisy brain. Archives of Italian Biology, 148, 323-337. Link
 
Lindstrom-Forneri, W., Tuokko, H., Garrett, D.D., & Molnar, F. (2010). Everyday competence: Theories, measurement strategies, and its relations to driving. Clinical Gerontologist, 33, 283-297. Link
 
Garrett, D.D., Tuokko, H., & Stajduhar, K. (2008). Planning for end-of-life care: Findings from the Canadian Study of Health and Aging. Canadian Journal on Aging, 27, 11-21. Link
 
Stepaniuk, J.A., Tuokko, H.A., McGee, P., Garrett, D.D. & Benner, E.L. (2008). Impact of transit training and free bus pass on public transportation use by older drivers. Preventative Medicine, 47, 335-337. Link
 
Dixon, R.A., Garrett, D.D., Lentz, T.L., Strauss, E., & Hultsch, D.F. (2007). Neurocognitive markers of mild cognitive impairment: Exploring the roles of speed and inconsistency. Neuropsychology, 21, 381-399. Link
 
Tuokko, H., Garrett, D.D., McDowell, I., Silverberg, N., & Kristjansson, B. (2003). Cognitive decline in high-functioning older adults: Reserve or ascertainment bias? Aging and Mental Health, 7, 259-270. Link
 
Chapters and Commentaries
Dixon, R.A., Garrett, D.D., & Backman, L. (2008). Compensation in cognitive neurorehabilitation. In D.T. Stuss, G. Winocur and I.H. Robertson (Eds.), Cognitive Neurorehabilitation, 2nd Edition. Cambridge: Cambridge University Press. Link
 
Garrett, D.D., McIntosh, A.R., & Grady, C.L. (2011). Moment-to-moment brain signal variability can inform models of stochastic facilitation now. Nature Reviews Neuroscience, 12, 612. Link
 
Garrett, D.D., Kovacevic, N., McIntosh, A.R. & Grady, C.L., (2010). All within-subject BOLD standard deviations are not created equal [response to Mohr, P.N. & Nagel, I.E.]. Journal of Neuroscience, 30, 7755-7757. [doi:10.1523/JNEUROSCI.1560-10.2010]. Link
 
Other contributions
Garrett, D.D. & Grady, C.L. (2010). Review of Stephens et al. (2010). Faculty of 1000, Dec, 2010.
Garrett, D.D. & Grady, C.L. (2010). Review of Gazzaniga (2010). Faculty of 1000, Aug, 2010.
 
Manuscripts under review
Grady, C.L. & Garrett, D.D. (under review). Brain Signal Variability is Modulated as a Function of Internal and External Demand in Younger and Older Adults.
 
Garrett, D.D. & Lindenberger, U. (under review). Local variability reflects lower dimensional functional integration in the human brain
 
Lövdén, M., Karalija, N., Kaboovand, N., Andersson, M., Wåhlin, A., Axelsson, J., Köhncke, Y., Jonasson, L.S., Rieckmann, A., Papenberg, G., Garrett, D.D., Guitart-Masip, M., Salami, A., Riklund, K., Bäckman, L., Nyberg, L., & Lindenberger, U. (under review). Latent-Profile Analysis Reveals Behavioral and Brain Correlates of Dopamine-Cognition Associations.
 
Salami, A., Rieckmann, A., Karalija, N., Avelar-Pereira, B., Andersson, M., Wåhlin, A., Papenberg, G., Garrett, D.D., Riklund, K., Lövdén, M., Lindenberger, U., Bäckman, L., & Nyberg, L. (under review). Neurocognitive profiles of healthy older adults with working-memory dysfunction
 
Halliday, D., Mulligan, B., Garrett, D.D., Schmidt, S., Hundza, S., Garcia-Barrera, M., Stawski, R., MacDonald, S.W.S. (under review). Neural Variability in Older Adults During an Executive Function Task using Functional Near Infrared Spectroscopy.