L Ryan

Summary

Affiliation: University of Arizona
Country: USA

Publications

  1. ncbi request reprint Search and selection processes in implicit and explicit word-stem completion performance in young, middle-aged, and older adults
    L Ryan
    Department of Psychology, University of Arizona, Tucson 85721 0068, USA
    Mem Cognit 29:678-90. 2001
  2. doi request reprint The role of medial temporal lobe in retrieving spatial and nonspatial relations from episodic and semantic memory
    Lee Ryan
    Cognition and Neuroimaging Laboratories, Department of Psychology, University of Arizona, Tucson, Arizona, USA
    Hippocampus 20:11-8. 2010
  3. ncbi request reprint Hippocampal complex and retrieval of recent and very remote autobiographical memories: evidence from functional magnetic resonance imaging in neurologically intact people
    L Ryan
    Cognition Laboratory, Department of Psychology, University of Arizona, Tucson 85721 0068, USA
    Hippocampus 11:707-14. 2001
  4. ncbi request reprint Caffeine reduces time-of-day effects on memory performance in older adults
    Lee Ryan
    Department of Psychology, University of Arizona, Tucson 85721 0068, USA
    Psychol Sci 13:68-71. 2002
  5. ncbi request reprint Regional specificity of format-specific priming effects in mirror word reading using functional magnetic resonance imaging
    Lee Ryan
    Cognition and Neuroimaging Laboratories, Department of Psychology, University of Arizona, Tucson, AZ 85721 0068, USA
    Cereb Cortex 17:982-92. 2007
  6. pmc Autobiographical memory retrieval and hippocampal activation as a function of repetition and the passage of time
    Lynn Nadel
    Department of Psychology, University of Arizona, Tucson, AZ 85721, USA
    Neural Plast 2007:90472. 2007
  7. ncbi request reprint Caffeine attenuates practice effects in word stem completion as measured by fMRI BOLD signal
    Barbara B Bendlin
    Department of Psychology, Cognition and Neuroimaging Laboratories, University of Arizona, Tucson, Arizona
    Hum Brain Mapp 28:654-62. 2007
  8. ncbi request reprint Cortical mechanisms for acquisition and performance of bimanual motor sequences
    P 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
  9. ncbi request reprint Bilateral hippocampal volume predicts verbal memory function in temporal lobe epilepsy
    Sheryl L Reminger
    Department of Pediatrics, University of Arizona, Tucson, AZ, USA
    Epilepsy Behav 5:687-95. 2004
  10. pmc Age-related differences in white matter integrity and cognitive function are related to APOE status
    Lee Ryan
    Evelyn F McKnight Brain Institute, Department of Psychology, University of Arizona, Tucson, AZ 85721 0068, USA
    Neuroimage 54:1565-77. 2011

Research Grants

Detail Information

Publications23

  1. ncbi request reprint Search and selection processes in implicit and explicit word-stem completion performance in young, middle-aged, and older adults
    L 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...
  2. doi request reprint The role of medial temporal lobe in retrieving spatial and nonspatial relations from episodic and semantic memory
    Lee 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...
  3. ncbi request reprint Hippocampal complex and retrieval of recent and very remote autobiographical memories: evidence from functional magnetic resonance imaging in neurologically intact people
    L 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...
  4. ncbi request reprint Caffeine reduces time-of-day effects on memory performance in older adults
    Lee 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...
  5. ncbi request reprint Regional specificity of format-specific priming effects in mirror word reading using functional magnetic resonance imaging
    Lee 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...
  6. pmc Autobiographical memory retrieval and hippocampal activation as a function of repetition and the passage of time
    Lynn 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...
  7. ncbi request reprint Caffeine attenuates practice effects in word stem completion as measured by fMRI BOLD signal
    Barbara 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)...
  8. ncbi request reprint Cortical mechanisms for acquisition and performance of bimanual motor sequences
    P 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
    ....
  9. ncbi request reprint Bilateral hippocampal volume predicts verbal memory function in temporal lobe epilepsy
    Sheryl 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...
  10. pmc Age-related differences in white matter integrity and cognitive function are related to APOE status
    Lee Ryan
    Evelyn F McKnight Brain Institute, Department of Psychology, University of Arizona, Tucson, AZ 85721 0068, USA
    Neuroimage 54:1565-77. 2011
    ....
  11. ncbi request reprint The impact of stress on neutral and emotional aspects of episodic memory
    Jessica 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...
  12. ncbi request reprint A case of psychogenic fugue: I understand, aber ich verstehe nichts
    Elizabeth L Glisky
    Department of Psychology, University of Arizona, P O Box 210068, Tucson, AZ 85721, USA
    Neuropsychologia 42:1132-47. 2004
    ....
  13. doi request reprint Hippocampal activation during retrieval of spatial context from episodic and semantic memory
    Siobhan 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
    ....
  14. ncbi request reprint Repetition priming without identification of the primes: evidence for a component process view of priming
    Chun 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
    ....
  15. pmc Stress administered prior to encoding impairs neutral but enhances emotional long-term episodic memories
    Jessica 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...
  16. pmc Hippocampal activation during episodic and semantic memory retrieval: comparing category production and category cued recall
    Lee 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...
  17. doi request reprint Age-related impairment in a complex object discrimination task that engages perirhinal cortex
    L Ryan
    Department of Psychology, Evelyn F McKnight Brain Institute, University of Arizona, Tucson, AZ 85721, USA
    Hippocampus 22:1978-89. 2012
    ..These results provide evidence for human age-related changes in PRC function that impact complex object discrimination...
  18. doi request reprint Anti-inflammatory drugs reduce age-related decreases in brain volume in cognitively normal older adults
    K 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...
  19. pmc A functional imaging study of cooperation in two-person reciprocal exchange
    K 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...
  20. pmc An fMRI study of episodic memory: retrieval of object, spatial, and temporal information
    Scott 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...
  21. doi request reprint Structural brain differences and cognitive functioning related to body mass index in older females
    Katrin 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...
  22. pmc The effect of scene context on episodic object recognition: parahippocampal cortex mediates memory encoding and retrieval success
    Scott 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...
  23. ncbi request reprint Masked word repetition results in increased fMRI signal: a framework for understanding signal changes in priming
    David 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 Grants6

  1. fMRI studies of semantic and episodic memory retrieval
    Lee 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. ..