Stephen D. Christman

ORCID: 0000-0003-1773-6332
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About
Contact & Profiles
Research Areas
  • Hemispheric Asymmetry in Neuroscience
  • Action Observation and Synchronization
  • Visual perception and processing mechanisms
  • Neural and Behavioral Psychology Studies
  • Child and Animal Learning Development
  • Spatial Neglect and Hemispheric Dysfunction
  • Social and Intergroup Psychology
  • Evolutionary Psychology and Human Behavior
  • Multisensory perception and integration
  • Spatial Cognition and Navigation
  • Motor Control and Adaptation
  • Face Recognition and Perception
  • Animal Behavior and Reproduction
  • Primate Behavior and Ecology
  • Animal and Plant Science Education
  • Insect and Arachnid Ecology and Behavior
  • Categorization, perception, and language
  • Tactile and Sensory Interactions
  • Cognitive Abilities and Testing
  • Sleep and Wakefulness Research
  • Neurobiology of Language and Bilingualism
  • Animal Vocal Communication and Behavior
  • Color perception and design
  • Hearing Impairment and Communication
  • Memory and Neural Mechanisms

University of Toledo
2016-2025

Montclair State University
2013-2019

Combat Capabilities Development Command Soldier Center
2013

Tufts University
2013

Merrimack College
2013

University of California, Berkeley
1987-1990

Two experiments examining effects of eye movements on episodic memory retrieval are reported. Thirty seconds horizontal saccadic (but not smooth pursuit or vertical movements) preceding testing resulted in selective enhancement for laboratory (Experiment 1) and everyday 2) events. Eye had no implicit memory. were also associated with more conservative response biases relative to a movement condition. Episodic improvement induced by bilateral is hypothesized reflect enhanced interhemispheric...

10.1037/0894-4105.17.2.221 article EN Neuropsychology 2003-01-01

A growing body of evidence is reviewed showing that degree handedness (consistent versus inconsistent) a more powerful and appropriate way to classify than the traditional one based on direction (right left). Experimental studies from domains episodic memory retrieval, belief updating/cognitive flexibility, risk perception, are described. These results suggest inconsistent associated with increased interhemispheric interaction access processes localized right cerebral hemisphere.

10.3389/fpsyg.2013.00009 article EN cc-by Frontiers in Psychology 2013-01-01

The present study investigated variables potentially associated with a lack of concern about COVID-19 and belief in the conspiracy theory that China is responsible for virus. In particular, looked at Authoritarianism, Conspiracy Beliefs, gender, consistency handedness as predictors nine Likert-type items gauging attitudes, behavior, beliefs regarding Initial analyses showed Authoritarianism predicted less impact virus on health, mask wearing, stronger China’s responsibility illness. Beliefs...

10.3389/fpsyg.2020.597671 article EN cc-by Frontiers in Psychology 2020-11-26

Experiment 1 found that mixed-handedness, which is associated with increased interaction between the left and right cerebral hemispheres relative to strong right-handedness, was an earlier offset of childhood amnesia. In 2, bilateral saccadic eye movements, have been shown enhance interhemispheric interaction, were also These results build upon a growing body research indicating basis for retrieval episodic memories. Moreover, 2 suggest has its effect on retrieval, not encoding,

10.1037/0894-4105.20.3.336 article EN Neuropsychology 2006-01-01

Research has shown that persons with mixed hand preference (i.e., who report using their non-dominant for at least some manual activities) display an increased tendency to update beliefs in response information inconsistent those beliefs. This been interpreted as reflecting the fact left hemisphere maintains our current while right evaluates and updates when appropriate. Belief evaluation is thus dependent on interhemispheric interaction, mixed-handedness associated interaction. In...

10.1080/13576500802079646 article EN Laterality Asymmetries of Body Brain and Cognition 2008-05-17

The use of bilateral eye movements (EMs) is an important component Eye Movement Desensitization and Reprocessing (EMDR) therapy for posttraumatic stress disorder. neural mechanisms underlying EMDR remain unclear. However, prior behavioral work looking at the effects EMs on retrieval episodic memories suggests that enhance interhemispheric interaction. present study examined used in electroencephalogram coherence. Relative to noneye-movement controls, engaging led decreased gamma Implications...

10.1097/nmd.0b013e318142cf73 article EN The Journal of Nervous and Mental Disease 2007-09-01

The terrorist attacks of September 11, 2001, were traumatic for people living throughout the United States. It has been suggested that far from experienced increased stress because their exposure to events via media, particularly television. Following a or stressful event, individuals may have dreams reflect experience. As part course on dreaming, recorded both prior and following 2001. On 12, these same reported activities media previous day. Results revealed (a) changes in dream features...

10.1111/j.1467-9280.2007.01900.x article EN Psychological Science 2007-04-01

An analysis of the handedness four members British rock band The Beatles is presented. Implications for roles left and right hands in playing different musical instruments, versus hemispheres song writing, Beatle's legacy popular culture are discussed.

10.1080/1357650x.2024.2387336 article EN Laterality Asymmetries of Body Brain and Cognition 2025-01-15

The dependence of episodic memories on interhemispheric processing was tested. In Experiment 1, positive familial sinistrality (FS+; e.g., presence left-handed relatives) associated with superior memory and inferior implicit in comparison negative (i.e., FS-). This reflected a greater degree interaction FS+ participants, which hypothesized as facilitating memory. 2, the authors directly manipulated inter- versus intrahemispheric using tests (recognition) semantic (lexical decision) letter...

10.1037//0894-4105.15.4.607 article EN Neuropsychology 2001-01-01

The growing body of literature on the effects bilateral saccadic eye movements, patterned after those employed in movement desensitization and reprocessing (EMDR), memory is reviewed. Research indicates that engaging movements prior to lab-based testing results significant improvement episodic across a wide range tests. Other these types hemispheric activation emotional state are also discussed. findings interpreted within framework suggesting such as EMDR, increase interaction between left...

10.1891/1933-3196.2.4.269 article EN Journal of EMDR Practice and Research 2008-11-01

Study Aim: Frontal electroencephalographic (EEG) alpha band power during rest shows increased right, and/or de-creased left, hemisphere activity under conditions of state or trait withdrawal-associated affect. Non-right-handers (NRH) are more likely to have mental illnesses and dispositions that involve such withdrawal-related The aim the study was examine whether NRH might be characterized by relative rest. Methods: present research investigated hypothesis examining resting EEG in...

10.4236/ojmp.2012.14014 article EN Open Journal of Medical Psychology 2012-01-01

Growing evidence supports the hypothesis that episodic versus semantic memories rely primarily on interhemispheric intrahemispheric processing, respectively. For example, a recent study found individuals with presumed greater interaction were superior in recall but inferior at word fragment completion; however, tests of recognition memory yielded no group differences. Interestingly, can be based either explicitly remembering stimulus or implicitly knowing had been presented. The current...

10.1080/09658210344000503 article EN Memory 2004-04-29

Research has shown that persons with strong right-hand preference (ie who report using their dominant hand for all manual activities) display a decreased tendency to update bodily and conceptual representations, possibly arising from interaction between the left right cerebral hemispheres. Current experiments extend these findings domain of perceptual representations. In 1 2, right-handedness was associated ability representations in response gradually changing input. experiment 3, lower...

10.1068/p6131 article EN Perception 2009-01-01
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