Hakwan C. Lau

Perceptual similarity representations beyond the sensory cortex

The paper investigates whether perceptual similarity information of color stimuli is represented in association cortex beyond the visual cortex using fMRI and electrophysiological data.

Bidirectional modulation of pain by neurofeedback: Preliminary findings with fMRI at 7T

This study investigates whether individuals can modulate their pain experience by altering brain activity patterns associated with pain, using neurofeedback with fMRI.

Relative Blindsight Induced by Incongruency with Working Memory

The paper shows that working memory incongruency affects subjective perception but not general perceptual capacity in nonclinical observers.

Representational Geometries Across Visual Working Memory Encoding and Maintenance

This study investigates how representational geometry of visual working memory changes between encoding and maintenance phases using human fMRI.

When awareness outstrips performance: critical tests of subjective inflation under inattention

The paper tests subjective inflation under inattention, finding robust inflation at and above visual thresholds but not for specific features at suprathreshold levels.

Representation of visual uniformity in the lateral prefrontal cortex

The paper identifies voxel patterns in the lateral prefrontal cortex that predict perceived visual uniformity and shows similarities to neural network representations.

Perceptual similarity judgments reflect one's own discrimination capacities

The paper shows that perceptual similarity judgments are linked to an individual's discrimination capacities, with similarity reflecting their ability to discern stimuli.

Individual differences in prefrontal coding of visual features

This study identifies individual differences in how the lateral prefrontal cortex encodes visual features using computational models and fMRI data.

Modulating Subjective Pain Perception with Decoded MNI-space Neurofeedback

This study uses real-time fMRI decoding to modulate pain-related brain patterns and shows that participants can down-regulate pain signatures, correlating with changes in perceived pain intensity.

Interaction Between the Prefrontal and Visual Cortices Supports Subjective Fear

This study investigates how fear is processed in the brain by analyzing hemodynamic activity patterns in the ventral visual stream and prefrontal cortex in response to animal images.

Natural statistics support a rational account of confidence biases

This paper develops a deep neural network model of decision confidence using naturalistic stimuli, revealing that confidence and decisions share a common decision variable despite dissociations.

Tuned normalization in perceptual decision-making circuits can explain seemingly suboptimal confidence behavior

The paper develops a neural network model with normalization tuning to explain dissociations between confidence and decision accuracy in perceptual tasks, validated in macaque superior colliculus.

Between-subject correlation of heart rate variability predicts movie preferences

The paper uses heart rate variability synchrony to identify emotionally engaging movie segments and shows it outperforms random selection in engagement.

New measures of agency from an adaptive sensorimotor task

This paper introduces a short online motion tracking task to measure self-agency by assessing perceptual and metacognitive judgments of movement control.

Multivoxel Neural Reinforcement Changes Resting-State Functional Connectivity Within the Threat Regulation Network

This study uses neural reinforcement to alter resting-state functional connectivity in the threat regulation network, showing increased prefrontal connectivity with amygdala and ventral temporal cortex, but no Hebbian-like learning.

TMS alters multivoxel patterns in the absence of overall activity changes

This study shows that TMS alters multivoxel patterns in the brain without changing overall BOLD activity.

Atypical spatial frequency dependence of visual metacognition among schizophrenia patients

The paper investigates how spatial frequency affects metacognitive performance in schizophrenia patients and controls, finding atypical SF dependence in patients.

Multivoxel Pattern Analysis Reveals Dissociations Between Subjective Fear and Its Physiological Correlates

The paper uses fMRI and machine learning to show that subjective fear and physiological responses dissociate in key brain regions.

Dissociable roles for Anterior Cingulate Cortex and Basolateral Amygdala in Decision Confidence and Learning under Uncertainty

This study investigates the roles of the anterior cingulate cortex (ACC) and basolateral amygdala (BLA) in decision confidence and learning under uncertainty using a rat behavioral task.

Multivoxel patterns for perceptual confidence are associated with false color detection

The paper links perceptual confidence to false color detection using decoded neurofeedback and fMRI.

Individual susceptibility to TMS affirms the precuneual role in meta-memory upon recollection

This study shows that TMS on the precuneus reduces meta-memory ability during memory retrieval and affects BOLD signal correlation with meta-memory efficiency.

Metacognition facilitates the exploitation of unconscious brain states

The paper shows that humans can use implicit metacognition to make decisions based on unconscious brain states, outperforming current AI in high-dimensional tasks.

Causal evidence for mnemonic metacognition in human precuneus

This study uses transcranial magnetic stimulation to show that the precuneus is selectively involved in mnemonic metacognition, not perceptual discrimination.

Domain-General and Domain-Specific Patterns of Activity Support Metacognition in Human Prefrontal Cortex

The paper investigates metacognition by analyzing fMRI data from perceptual and memory tasks, finding both domain-specific and domain-general neural representations.

Towards an Unconscious Neurotherapy for Common Fears

This paper introduces a method to reprogram unconscious fear responses in the human brain using fMRI decoding and monetary reward, showing reduced physiological fear responses in a double-blind study.

Superior Colliculus Neuronal Ensemble Activity Signals Optimal Rather Than Subjective Confidence

The paper investigates whether neuronal activity in the superior colliculus signals optimal or subjective confidence during decision-making tasks and finds that it reflects decision accuracy rather than subjective confidence.

A random-dot kinematogram for web-based vision research

The paper introduces a web-based random-dot kinematogram (RDK) stimulus for vision research, providing customizable code and integration examples.

Subjective inflation of color saturation in the periphery under temporal overload

The paper investigates subjective inflation of color saturation in the periphery under temporal overload and finds a significant effect of modest magnitude.

Finding domain-general metacognitive mechanisms requires using appropriate tasks

The paper investigates whether metacognition is domain-general or domain-specific by replicating and extending previous studies using different judgment types.

On a ‘failed’ attempt to manipulate conscious perception with transcranial magnetic stimulation to prefrontal cortex

The paper evaluates subject exclusion criteria in a TMS study and finds that their exclusion did not reduce false positives, suggesting TMS to DLPFC impairs metacognition.