Alejandro Lleras, Professor of Psychology, Charles Eriksen Professorial Scholar

Search results

• 2020

  A target contrast signal theory of parallel processing in goal-directed search

  Lleras, A., Wang, Z., Ng, G. J. P., Ballew, K., Xu, J. & Buetti, S., Feb 1 2020, In: Attention, Perception, and Psychophysics. 82, 2, p. 394-425 32 p.

  Research output: Contribution to journal › Article › peer-review

  • Parallel Processing
  • Eye Movements
  • Ocular Vision
  • Publications
  • Cognition

• The impact of focused attention on subsequent emotional recollection: A functional MRI investigation

  Dolcos, F., Katsumi, Y., Bogdan, P. C., Shen, C., Jun, S., Buetti, S., Lleras, A., Bost, K. F., Weymar, M. & Dolcos, S., Feb 17 2020, In: Neuropsychologia. 138, 107338.

  Research output: Contribution to journal › Article › peer-review

  • Memory
  • Magnetic Resonance Imaging
  • Amygdala
  • Hippocampus
  • Emotions
• 2019

  Distractor rejection in parallel search tasks takes time but does not benefit from context repetition^*

  Ng, G. J. P., Buetti, S., Dolcos, S., Dolcos, F. & Lleras, A., Sep 14 2019, In: Visual Cognition. 27, 5-8, p. 609-625 17 p.

  Research output: Contribution to journal › Article › peer-review

  • Distractor
  • Rejection (Psychology)
  • Reaction Time
  • Rejection
  • Memory

• Predicting how color and shape combine in the human visual system to direct attention

  Buetti, S., Xu, J. & Lleras, A., Dec 1 2019, In: Scientific reports. 9, 1, 20258.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • Color
  • Ocular Vision
  • Brain

• Predicting Search Performance in Heterogeneous Scenes: Quantifying the Impact of Homogeneity Effects in Efficient Search

  Lleras, A., Wang, Z., Madison, A. & Buetti, S., Jan 8 2019, In: Collabra: Psychology. 5, 1, p. 2

  Research output: Contribution to journal › Article › peer-review

  Open Access
• 2018

  Fixed-target efficient search has logarithmic efficiency with and without eye movements

  Ng, G. J. P., Lleras, A. & Buetti, S., Oct 1 2018, In: Attention, Perception, and Psychophysics. 80, 7, p. 1752-1762 11 p.

  Research output: Contribution to journal › Article › peer-review

  • Eye Movements
  • Visual Search
  • efficiency
  • Reaction Time
  • Cognitive Architecture

• Parallel, exhaustive processing underlies logarithmic search functions: Visual search with cortical magnification

  Wang, Z., Lleras, A. & Buetti, S., Aug 1 2018, In: Psychonomic Bulletin and Review. 25, 4, p. 1343-1350 8 p.

  Research output: Contribution to journal › Article › peer-review

  • Parallel Processing
  • Visual Search
  • Reaction Time
  • Eccentricity
  • Modulation

• The role of crowding in parallel search: Peripheral pooling is not responsible for logarithmic efficiency in parallel search

  Madison, A., Lleras, A. & Buetti, S., Feb 1 2018, In: Attention, Perception, and Psychophysics. 80, 2, p. 352-373 22 p.

  Research output: Contribution to journal › Article › peer-review

  • Crowding
  • efficiency
  • Spacing
  • Reaction Time
  • experiment
• 2017

  Alpha, beta: The rhythm of the attentional blink

  Shapiro, K. L., Hanslmayr, S., Enns, J. T. & Lleras, A., Dec 1 2017, In: Psychonomic Bulletin and Review. 24, 6, p. 1862-1869 8 p.

  Research output: Contribution to journal › Article › peer-review

  • Beta Rhythm
  • Attentional Blink
  • Rhythm
  • Consciousness
  • Oscillation

• Can we "Apply" the findings of Forster and Lavie (2008)? On the generalizability of attentional capture effects under varying levels of perceptual load

  Lleras, A., Chu, H. & Buetti, S., Jun 2017, In: Journal of Experimental Psychology: Applied. 23, 2, p. 158-179 22 p.

  Research output: Contribution to journal › Article › peer-review

• Exploring the contributions of spatial and non-spatial working memory to priming of pop-out

  Ahn, J. W., Patel, T. N., Buetti, S. & Lleras, A., May 1 2017, In: Attention, Perception, and Psychophysics. 79, 4, p. 1012-1026 15 p.

  Research output: Contribution to journal › Article › peer-review

  • Visual Working Memory
  • Priming
  • Working Memory
  • Short-Term Memory
  • Psychophysics

• Predicting search performance in heterogeneous visual search scenes with real-world objects

  Wang, Z., Buetti, S. & Lleras, A., 2017, In: Collabra: Psychology. 3, 1, 6.

  Research output: Contribution to journal › Article › peer-review
• 2016

  Avoidance or boredom: Negative mental health outcomes associated with use of Information and Communication Technologies depend on users' motivations

  Panova, T. & Lleras, A., May 1 2016, In: Computers in Human Behavior. 58, p. 249-258 10 p.

  Research output: Contribution to journal › Article › peer-review

  • Boredom
  • Information and Communication Technology
  • Information Technology
  • Mental Health
  • Avoidance

• Distractibility is a function of engagement, not task difficulty: Evidence from a new oculomotor capture paradigm

  Buetti, S. & Lleras, A., Oct 1 2016, In: Journal of Experimental Psychology: General. 145, 10, p. 1382-1405 24 p.

  Research output: Contribution to journal › Article › peer-review

  • Individuality
  • Motivation

• Towards a better understanding of parallel visual processing in human vision: Evidence for exhaustive analysis of visual information

  Buetti, S., Cronin, D. A., Madison, A. M., Wang, Z. & Lleras, A., Jun 1 2016, In: Journal of Experimental Psychology: General. 145, 6, p. 672-707 36 p.

  Research output: Contribution to journal › Article › peer-review

  • Ocular Vision
• 2014

  Age-related differences in the distractor previewing effect with schematic faces of emotions

  Wan, X., Tian, L. & Lleras, A., Jan 1 2014, In: Aging, Neuropsychology, and Cognition. 21, 4, p. 386-410 25 p.

  Research output: Contribution to journal › Article › peer-review

  • Emotions
  • Young Adult
  • History
  • Inhibition (Psychology)

• Modeling the effect of selection history on pop-out visual search

  Tseng, Y. C., Glaser, J. I., Caddigan, E. & Lleras, A., Mar 3 2014, In: PloS one. 9, 3, e89996.

  Research output: Contribution to journal › Article › peer-review

  • history
  • History
  • Color
  • color
  • Electric current control

• Not all "distractor" tags are created equal: Using a search asymmetry to dissociate the inter-trial effects caused by different forms of distractors

  Lleras, A. & Buetti, S., 2014, In: Frontiers in Psychology. 5, JUN, 669.

  Research output: Contribution to journal › Article › peer-review

  • Cognitive Neuroscience

• Relative contributions of task-relevant and task-irrelevant dimensions in priming of pop-out

  Michal, A. L., Lleras, A. & Beck, D. M., 2014, In: Journal of vision. 14, 12, 14.

  Research output: Contribution to journal › Article › peer-review

  • Short-Term Memory
  • Color
  • Aptitude

• The flanker effect does not reflect the processing of “task-irrelevant” stimuli: Evidence from inattentional blindness

  Buetti, S., Lleras, A. & Moore, C. M., Oct 1 2014, In: Psychonomic Bulletin and Review. 21, 5, p. 1231-1237 7 p.

  Research output: Contribution to journal › Article › peer-review

  • Inattentional Blindness
  • Blindness
  • Terminology
  • Stimulus
  • Contingent

• The role of prediction in perception: Evidence from interrupted visual search

  Mereu, S., Zacks, J. M., Kurby, C. A. & Lleras, A., Aug 2014, In: Journal of Experimental Psychology: Human Perception and Performance. 40, 4, p. 1372-1389 18 p.

  Research output: Contribution to journal › Article › peer-review

  • Data Display
  • Visual Search
  • Visual Perception
  • Prediction
  • Interruption

• Trial history effects in the ventral attentional network

  Scalf, P. E., Ahn, J. W., Beck, D. M. & Lleras, A., Dec 20 2014, In: Journal of cognitive neuroscience. 26, 12, p. 2789-2797 9 p.

  Research output: Contribution to journal › Article › peer-review

  • History
  • Tanacetum
  • Neurosciences
  • Psychological Signal Detection
  • Attentional Bias
• 2013

  Feelings of control restore distorted time perception of emotionally charged events

  Mereu, S. & Lleras, A., Mar 2013, In: Consciousness and Cognition. 22, 1, p. 306-314 9 p.

  Research output: Contribution to journal › Article › peer-review

  • Time Perception
  • Emotions
  • Arousal
  • Anxiety
  • Observer

• Rewarding context accelerates implicit guidance in visual search

  Tseng, Y. C. & Lleras, A., May 6 2013, In: Attention, Perception, and Psychophysics. 75, 2, p. 287-298 12 p.

  Research output: Contribution to journal › Article › peer-review

  • Visual Search
  • Guidance
  • Reward
  • reward
  • penalty
• 2012

  Making waves in the stream of consciousness: Entraining oscillations in EEG alpha and fluctuations in visual awareness with rhythmic visual stimulation

  Mathewson, K. E., Prudhomme, C., Fabiani, M., Beck, D. M., Lleras, A. & Gratton, G., Dec 1 2012, In: Journal of cognitive neuroscience. 24, 12, p. 2321-2333 13 p.

  Research output: Contribution to journal › Article › peer-review

  • Visual Stimulation
  • Stream of Consciousness
  • Photic Stimulation
  • Oscillation
  • Electroencephalogram (EEG)

• Perceiving control over aversive and fearful events can alter how we experience those events: An investigation of time perception in spider-fearful individuals

  Buetti, S. & Lleras, A., 2012, In: Frontiers in Psychology. 3, SEP, Article 337.

  Research output: Contribution to journal › Article › peer-review

  • Time Perception
  • Spiders
  • Arousal
  • Cognitive Dissonance
  • Illusions
• 2011

  Age-related effects in inter-trial inhibition of attention

  Wan, X., Voss, M. & Lleras, A., Sep 1 2011, In: Aging, Neuropsychology, and Cognition. 18, 5, p. 562-576 15 p.

  Research output: Contribution to journal › Article › peer-review

  • Color
  • Inhibition (Psychology)
  • Attentional Bias
  • Longevity
  • Young Adult

• Brief and rare mental "breaks" keep you focused: Deactivation and reactivation of task goals preempt vigilance decrements

  Ariga, A. & Lleras, A., Mar 1 2011, In: Cognition. 118, 3, p. 439-443 5 p.

  Research output: Contribution to journal › Article › peer-review

  • preempt
  • Reactivation
  • Vigilance
  • control system
  • activation

• Rapid resumption of interrupted search is independent of age-related improvements in visual search

  Lleras, A., Porporino, M., Burack, J. A. & Enns, J. T., May 1 2011, In: Journal of Experimental Child Psychology. 109, 1, p. 58-72 15 p.

  Research output: Contribution to journal › Article › peer-review

  • Age Groups
  • Psychology
• 2010

  Brief and rare mental " breaks" keep you focused: Deactivation and reactivation of task goals preempt vigilance decrements

  Ariga, A. & Lleras, A., Mar 16 2010, In: Developmental cell. 18, 3, p. 439-443 5 p.

  Research output: Contribution to journal › Article › peer-review

  • preempt
  • Chemical activation
  • Switches
  • Control systems
  • Data storage equipment

• Rescuing stimuli from invisibility: Inducing a momentary release from visual masking with pre-target entrainment

  Mathewson, K. E., Fabiani, M., Gratton, G., Beck, D. M. & Lleras, A., Apr 1 2010, In: Cognition. 115, 1, p. 186-191 6 p.

  Research output: Contribution to journal › Article › peer-review

  • Entrainment
  • Masking
  • Invisibility
  • stimulus
  • Stimulus

• Saccadic repulsion in pop-out search: How a target's dodgy history can push the eyes away from it

  Caddigan, E. & Lleras, A., 2010, In: Journal of vision. 10, 14, p. 1-9 9 p.

  Research output: Contribution to journal › Article › peer-review

  • Eye Movements
  • History
  • Reaction Time
  • Eye
  • Saccades

• The effect of feature discriminability on the intertrial inhibition of focused attention

  Wan, X. & Lleras, A., Jun 1 2010, In: Visual Cognition. 18, 6, p. 920-944 25 p.

  Research output: Contribution to journal › Article › peer-review

  • Distractor
  • Color
  • Inhibition (Psychology)
  • Attentional Bias
  • Experiment
• 2009

  Covert shifts of attention function as an implicit aid to insight

  Thomas, L. E. & Lleras, A., May 1 2009, In: Cognition. 111, 2, p. 168-174 7 p.

  Research output: Contribution to journal › Article › peer-review

  • Cognition
  • cognition
  • Eye Movements
  • Radiation
  • Eye

• Focused spatial attention is independent of rapid resumption of an interrupted search

  Lleras, A. & Enns, J. T., Apr 2009, In: Attention, Perception, and Psychophysics. 71, 3, p. 565-577 13 p.

  Research output: Contribution to journal › Article › peer-review

  • Spatial Attention
  • Resumption
  • Cues
  • experiment
  • Experiment

• Inhibitory tagging in an interrupted visual search

  Thomas, L. E. & Lleras, A., Aug 2009, In: Attention, Perception, and Psychophysics. 71, 6, p. 1241-1250 10 p.

  Research output: Contribution to journal › Article › peer-review

  • Visual Search
  • Tagging
  • Distractor
  • Tag
  • Inhibition of Return

• Past rejections lead to future misses: Selection-related inhibition produces blink-like misses of future (easily detectable) events

  Lleras, A., Kawahara, J. I. & Levinthal, B. R., Mar 27 2009, In: Journal of vision. 9, 3, 26.

  Research output: Contribution to journal › Article › peer-review

  • Color

• Swinging into thought: Directed movement guides insight in problem solving

  Thomas, L. E. & Lleras, A., Aug 2009, In: Psychonomic Bulletin and Review. 16, 4, p. 719-723 5 p.

  Research output: Contribution to journal › Article › peer-review

  • Problem Solving
  • Thinking
  • Thought
  • Exercise
  • Cognitive Processing

• Temporal tuning and attentional gating: Two distinct attentional mechanisms on the perception of rapid serial visual events

  Ambinder, M. S. & Lleras, A., 2009, In: Attention, Perception, and Psychophysics. 71, 7, p. 1495-1506 12 p.

  Research output: Contribution to journal › Article › peer-review

  • Gating
  • Tuning
  • Attentional Blink
  • Costs and Cost Analysis
  • event
• 2008

  Context-free inhibition: Attentional biases transfer strongly across temporal and spatial search tasks

  Levinthal, B. R. & Lleras, A., 2008, In: Visual Cognition. 16, 8, p. 1119-1123 5 p.

  Research output: Contribution to journal › Article › peer-review

• Electrophysiological evidence of feature-based inhibition of focused attention across consecutive trials

  Shin, E., Wan, X. I., Fabiani, M., Gratton, G. & Lleras, A., Sep 1 2008, In: Psychophysiology. 45, 5, p. 804-811 8 p.

  Research output: Contribution to journal › Article › peer-review

• Inter-trial inhibition of attention to features is modulated by task relevance

  Levinthal, B. R. & Lleras, A., Nov 17 2008, In: Journal of vision. 8, 15, 12.

  Research output: Contribution to journal › Article › peer-review

  • Inhibition (Psychology)
  • Attentional Bias
  • Color
  • Aptitude

• Intertrial inhibition of focused attention in pop-out search

  Lleras, A., Kawahara, J. I., Wan, X. I. & Ariga, A., Jan 2008, In: Perception and Psychophysics. 70, 1, p. 114-131 18 p.

  Research output: Contribution to journal › Article › peer-review

  • Color
  • Distractor
  • experiment
  • Experiment
  • suppression

• What's next? New evidence for prediction in human vision

  Enns, J. T. & Lleras, A., Sep 1 2008, In: Trends in Cognitive Sciences. 12, 9, p. 327-333 7 p.

  Research output: Contribution to journal › Article › peer-review

  • Ocular Vision
  • Neurophysiology
  • Hope
  • Motivation
  • Memory
• 2007

  A negative compatibility effect in priming of emotional faces

  Bennett, J. D., Lleras, A., Oriet, C. & Enns, J. T., Oct 2007, In: Psychonomic Bulletin and Review. 14, 5, p. 908-912 5 p.

  Research output: Contribution to journal › Article › peer-review

  • Priming
  • Compatibility
  • Arrow
  • Emotion
  • Response Bias

• In sight, out of mind: The role of eye movements in the rapid resumption of visual search

  Van Zoest, W., Lleras, A., Kingstone, A. & Enns, J. T., Oct 2007, In: Perception and Psychophysics. 69, 7, p. 1204-1217 14 p.

  Research output: Contribution to journal › Article › peer-review

  • Visual Search
  • Resumption
  • REM Sleep
  • Eye Movements
  • Eye

• Moving eyes and moving thought: On the spatial compatibility between eye movements and cognition

  Thomas, L. E. & Lleras, A., Aug 2007, In: Psychonomic Bulletin and Review. 14, 4, p. 663-668 6 p.

  Research output: Contribution to journal › Article › peer-review

  • Eye Movements
  • Thinking
  • Compatibility
  • Cognition
  • Eye

• No-Onset Looming Motion Guides Spatial Attention

  von Mühlenen, A. & Lleras, A., Dec 2007, In: Journal of Experimental Psychology: Human Perception and Performance. 33, 6, p. 1297-1310 14 p.

  Research output: Contribution to journal › Article › peer-review

  • Spatial Attention
  • Onset
  • Stimulus
  • Vanishing Point
  • Arrow

• The unique contributions of retinal size and perceived size on change detection

  Levinthal, B. R. & Lleras, A., Jan 1 2007, In: Visual Cognition. 15, 1, p. 101-105 5 p.

  Research output: Contribution to journal › Article › peer-review
• 2006

  Fruitful visual search: Inhibition of return in a virtual foraging task

  Thomas, L. E., Ambinder, M. S., Hsieh, B., Levinthal, B., Crowell, J. A., Irwin, D. E., Kramer, A. F., Lleras, A., Simons, D. J. & Ranxiao, F. W., Oct 2006, In: Psychonomic Bulletin and Review. 13, 5, p. 891-895 5 p.

  Research output: Contribution to journal › Article › peer-review

  • Inhibition of Return
  • Visual Search
  • Foraging
  • Virtual Reality
  • Leaves