Jason Samaha

This study investigates how alpha oscillations relate to mind-wandering and sleepiness, finding opposite effects when eyes are open versus closed.

This study shows that alpha-band phase affects perceptual sensitivity by reducing internal noise and sharpening sensory tuning, as measured through EEG and signal detection theory.

This study investigates how individual alpha frequency (IAF) relates to time perception sensitivity using duration estimation and discrimination tasks, finding IAF correlates with precision but not bias in duration judgments.

The paper investigates how individual alpha frequency relates to temporal integration windows in visual crowding and finds that faster alpha rhythms allow shorter integration times, which is modulated by spatial grouping.

The paper investigates the temporal dynamics of spatial visual organization through crowding and uncrowding effects using a Vernier discrimination task.

The paper investigates whether the centro-parietal positivity (CPP) EEG component reflects evidence accumulation in perceptual and mnemonic decisions, finding it scales with evidence strength, response time, and confidence across tasks.

This study investigates unconscious multisensory integration by showing that non-conscious visual stimuli influence sound localization, challenging theories that require conscious awareness for such integration.

This study investigates how pre-stimulus alpha-band activity affects detection of stimuli processed by magnocellular and parvocellular pathways, finding a selective criterion shift in the magnocellular condition.

This study shows that tFUS targeting the amygdala enhances both emotional and neutral memory, suggesting a role for the amygdala in filtering non-salient stimuli rather than amplifying salient ones.

This study investigates metacognition in visual processing by comparing MC and PC pathways in localization and orientation discrimination tasks, finding greater metacognition in MC-biased conditions for localization but not orientation.

The paper shows that confidence introspection changes the dynamics of neural evidence accumulation during perceptual decisions, increasing accuracy and altering the central-parietal positivity slope.

The paper investigates how pre-stimulus alpha-band activity and pupil-linked arousal differentially affect visual detection and confidence across contrast levels, finding additive and multiplicative effects respectively.

This study reanalyzes episodic memory data from 10 datasets to show how different drug classes uniquely affect recollection, familiarity, and metamemory during encoding, consolidation, and retrieval.

This paper reviews and meta-analyzes 27 experiments linking individual differences in alpha frequency to temporal processing, finding a medium-to-large correlation.

The paper shows serial dependence in 3D motion perception is influenced by sensory uncertainty and can be reduced by performance feedback, suggesting a post-perceptual mechanism.

The paper identifies trial-to-trial variability in EEG patterns during a perceptual decision task and links these patterns to decision-making parameters.

The paper shows that neural signatures of evidence accumulation predict subjective perceptual confidence independently of accuracy, response time, and evidence quality.

The paper investigates how spontaneous alpha-band amplitude affects subjective visibility and discrimination accuracy in a high-level perceptual task, finding it predicts visibility but not accuracy.

The paper examines alpha-band EEG dynamics during attentional shifts and finds no difference in time course between unattended and irrelevant locations, supporting a secondary-consequence interpretation of attention-related alpha changes.

This paper shows that frequency sliding underestimates oscillatory frequency in the presence of 1/f power spectrum slope, and provides strategies to mitigate this bias.

This study investigates whether a single oscillator underlies perceptual moments by examining correlations between flash-lag and Frohlich illusion PSEs, finding no significant correlation.

This study shows that alpha-band phase modulates early visual cortex responses to stimuli, supporting a feedforward gating mechanism.

The paper investigates how spontaneous neural oscillations affect behavior and sensory processing by modulating neuronal excitability during an auditory task.

This study shows that lateral prefrontal cortex (LPFC) causally supports metacognitive awareness of emotional face orientation but not emotional expression.

The paper investigates how prestimulus neural oscillations influence sensory responses by analyzing ERP components in humans during repeated visual stimulation.

This study shows that high confidence in a decision increases serial dependence in orientation estimation, even when confidence is dissociated from actual task performance.

The paper shows that prior knowledge improves visual discrimination and is reflected in alpha-band oscillations and early visual responses.

The paper finds a correlation between metacognitive accuracy in visual perception and visual short-term memory, suggesting a domain-general mechanism when tasks share the same stimulus feature.

The paper shows that prestimulus alpha-band power affects visual discrimination confidence but not accuracy in a two-choice orientation discrimination task.

The paper investigates neural correlates of phosphene perception following TMS of human occipital and parietal cortex, finding distinct alpha and beta band oscillations predict perception in these regions.