Research Topics
| L RyanSummaryAffiliation: University of Arizona Country: USA Publications
Research Grants
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Detail Information
Publications
Search and selection processes in implicit and explicit word-stem completion performance in young, middle-aged, and older adultsL Ryan
Department of Psychology, University of Arizona, Tucson 85721 0068, USA
Mem Cognit 29:678-90. 2001..The results are consistent with the view that older adults rely on familiarity to a greater degree than do young adults...
The role of medial temporal lobe in retrieving spatial and nonspatial relations from episodic and semantic memoryLee Ryan
Cognition and Neuroimaging Laboratories, Department of Psychology, University of Arizona, Tucson, Arizona, USA
Hippocampus 20:11-8. 2010..The placement of activation along the anterior-posterior axis of the hippocampus also differentiated the conditions. We suggest a view of hippocampal function in memory that incorporates aspects of all three theories...- Hippocampal complex and retrieval of recent and very remote autobiographical memories: evidence from functional magnetic resonance imaging in neurologically intact peopleL Ryan
Cognition Laboratory, Department of Psychology, University of Arizona, Tucson 85721 0068, USA
Hippocampus 11:707-14. 2001..The results support the notion that the hippocampal complex participates in retention and recovery of even very old autobiographical memories, and place boundary conditions on theories of memory consolidation... - Caffeine reduces time-of-day effects on memory performance in older adultsLee Ryan
Department of Psychology, University of Arizona, Tucson 85721 0068, USA
Psychol Sci 13:68-71. 2002..In contrast, those who ingested caffeine showed no decline in performance from morning to afternoon. The results suggest that time-of-day effects may be mediated by nonspecific changes in level of arousal... - Regional specificity of format-specific priming effects in mirror word reading using functional magnetic resonance imagingLee Ryan
Cognition and Neuroimaging Laboratories, Department of Psychology, University of Arizona, Tucson, AZ 85721 0068, USA
Cereb Cortex 17:982-92. 2007..The results indicate that, although there are global neural priming effects due to stimulus repetition, it is also possible to identify regional brain changes that are sensitive to the specific perceptual overlap of primes and targets... 
Autobiographical memory retrieval and hippocampal activation as a function of repetition and the passage of timeLynn Nadel
Department of Psychology, University of Arizona, Tucson, AZ 85721, USA
Neural Plast 2007:90472. 2007..These results have important implications for existing theories of long-term memory consolidation...- Caffeine attenuates practice effects in word stem completion as measured by fMRI BOLD signalBarbara B Bendlin
Department of Psychology, Cognition and Neuroimaging Laboratories, University of Arizona, Tucson, Arizona
Hum Brain Mapp 28:654-62. 2007..The results suggest that caffeine may attenuate general task practice effects that have been described in recent functional MRI studies of word stem completion (Buckner et al. [2000] Brain 123:620-640)... - Cortical mechanisms for acquisition and performance of bimanual motor sequencesP De Weerd
Laboratory of Perception and Action, College of Social and Behavioral Sciences, Department of Psychology Bldg 68, University of Arizona, 1503 E University Boulevard, PO Box 210068, Tucson, AZ 85721, USA
Neuroimage 19:1405-16. 2003.... - Bilateral hippocampal volume predicts verbal memory function in temporal lobe epilepsySheryl L Reminger
Department of Pediatrics, University of Arizona, Tucson, AZ, USA
Epilepsy Behav 5:687-95. 2004..The collective and complementary functions of the left and right hippocampi merit further exploration in prospective studies of memory function and TLE... - Hippocampal activation during retrieval of spatial context from episodic and semantic memorySiobhan M Hoscheidt
Department of Psychology, University of Arizona, 1503 E University Blvd, Building 86, Tucson, AZ 85721, USA
Behav Brain Res 212:121-32. 2010.... - Hippocampal activation during episodic and semantic memory retrieval: comparing category production and category cued recallLee Ryan
Cognition and Neuroimaging Laboratories, Department of Psychology, University of Arizona, Tucson, AZ 85721 0068, USA
Neuropsychologia 46:2109-21. 2008..We conclude that the distinction between semantic and episodic memory is more complex than classic memory models suggest... - Stress administered prior to encoding impairs neutral but enhances emotional long-term episodic memoriesJessica D Payne
Harvard University, Department of Psychology, William James Hall, Cambridge, Massachusetts 02138, USA
Learn Mem 14:861-8. 2007..These differences likely emerge from differential actions of stress hormones on memory-relevant regions of the brain... - Repetition priming without identification of the primes: evidence for a component process view of primingChun Yu Lin
Cognition and Neuroimaging Laboratory, Department of Psychology, P O Box 210068, University of Arizona, Tucson, AZ 85721 0068, USA
Neuroimage 38:589-603. 2007.... - A case of psychogenic fugue: I understand, aber ich verstehe nichtsElizabeth L Glisky
Department of Psychology, University of Arizona, P O Box 210068, Tucson, AZ 85721, USA
Neuropsychologia 42:1132-47. 2004.... - The impact of stress on neutral and emotional aspects of episodic memoryJessica D Payne
University of Arizona, Tucson 85721, USA
Memory 14:1-16. 2006..These data, which are also consistent with results obtained in a number of studies using animals and humans, have implications for the traumatic memory debate and theories regarding human memory... - Age-related differences in white matter integrity and cognitive function are related to APOE statusLee Ryan
Evelyn F McKnight Brain Institute, Department of Psychology, University of Arizona, Tucson, AZ 85721 0068, USA
Neuroimage 54:1565-77. 2011.... - Anti-inflammatory drugs reduce age-related decreases in brain volume in cognitively normal older adultsK Walther
Cognition and Neuroimaging Laboratories, Department of Psychology, University of Arizona, Tucson, AZ 85721, USA
Neurobiol Aging 32:497-505. 2011..It is possible that inflammation plays a role in volume decreases associated with normal aging, and that suppressing the inflammatory response moderates this decrease... - A functional imaging study of cooperation in two-person reciprocal exchangeK McCabe
Cognition and Neuroimaging Laboratories, University of Arizona, Tucson, AZ 85721, USA
Proc Natl Acad Sci U S A 98:11832-5. 2001..Within the group of five noncooperators, there are no significant differences in prefrontal activation between computer and human conditions... - An fMRI study of episodic memory: retrieval of object, spatial, and temporal informationScott M Hayes
Cognition and Neuroimaging Laboratories, Department of Psychology, University of Arizona, Tucson, AZ 85721, USA
Behav Neurosci 118:885-96. 2004..These findings support current theories positing roles for frontal and medial temporal regions during episodic retrieval and suggest a specific role for the hippocampal complex in the retrieval of spatial-location information... - Structural brain differences and cognitive functioning related to body mass index in older femalesKatrin Walther
Department of Psychology, University of Arizona, Tucson, Arizona 85721 0068, USA
Hum Brain Mapp 31:1052-64. 2010..The results provide additional evidence for a negative link between increased body fat and brain functioning in older females... - The effect of scene context on episodic object recognition: parahippocampal cortex mediates memory encoding and retrieval successScott M Hayes
Center for Cognitive Neuroscience, Department of Psychology and Neuroscience, Duke University, Durham NC
Hippocampus 17:873-89. 2007..These findings are consistent with the view that spatial information is stored in the hippocampal complex, one of the central tenets of Multiple Trace Theory... - Masked word repetition results in increased fMRI signal: a framework for understanding signal changes in primingDavid M Schnyer
Memory Disorders Research Center, Boston DVA Medical Center, MA 02130-4817, USA
Neuroreport 13:281-4. 2002..This finding provides evidence suggesting that the impact of repetition priming on the fMRI signal may depend upon whether or not the prime is identified...
Research Grants
- fMRI studies of semantic and episodic memory retrievalLee Ryan; Fiscal Year: 2007..The study will not only directly test some of the assertions from MTT, but it will also provide important information regarding the neural mechanisms underlying long-term storage and retrieval in humans. ..