Johan N. Lundström

Recurrent interactions between olfactory bulb and olfactory cortex support cross-sniff perceptual continuity in humans

The paper shows that recurrent interactions between the olfactory bulb and piriform cortex in humans maintain perceptual continuity by integrating sensory information across successive sniffs.

Precision measurement of non-conscious avoidance reactions using 3D tracking: Validation across olfaction and vision

The paper introduces a 3D tracking method to measure non-conscious avoidance reactions in olfaction and vision, showing participants move away from unpleasant stimuli.

Auditory and visual object processing in olfactory cortex of individuals with life-long olfactory deprivation

This study shows that lifelong olfactory deprivation does not prevent cross-modal processing in the piriform cortex, supporting a task-based organization over modality-specific specialization.

Limited Effects of Isolated Congenital Anosmia on Cerebral White Matter Morphology

This study finds that individuals with isolated congenital anosmia show reduced white matter volume near the olfactory sulcus but not around the olfactory cortex, suggesting localized morphological changes due to lifelong olfactory deprivation.

Methodological determinants of signal quality in electrobulbogram recordings

This study evaluates EBG signal quality across different methodological configurations, finding that subject-specific setups improve signals but template-based methods also yield significant results.

The olfactory bulb reflects structural plasticity within a genetically stable olfactory network

The paper investigates the heritability of olfactory bulb volume and olfactory network architecture using twin data and machine learning, finding that genetic factors influence the network as a whole.

Olfactory bulb and cortex activity reflects subjective odor intensity perception rather than concentration

The paper shows that the olfactory bulb and cortex use oscillatory dynamics to reflect perceived odor intensity rather than physical concentration.

Unisensory visual and auditory objects are processed in olfactory cortex, independently of odor association

The paper shows that olfactory cortex processes visual and auditory objects independently of their odor associations, challenging cross-modal association explanations.

The Respiratory-Pupillary Phase Effect: Pupils size is smallest around inhalation onset and largest during exhalation

This study challenges the traditional view of pupillary changes during respiration, showing pupils are smallest at inhalation onset and largest during exhalation across multiple conditions.

Distinct Functions for Beta and Alpha Bursts in Gating of Human Working Memory

The paper reconciles discrepancies between human and non-human primate studies by showing alpha and beta bursts have distinct roles in human working memory, with region-specific functions.

Metabolic state modulates neural processing of odors in the human olfactory bulb

This study shows that metabolic state affects odor processing in the human olfactory bulb, with higher gamma power observed during hunger compared to satiety.

Effects of dopamine and opioid receptor antagonism on the neural processing of social and non-social rewards

This study investigates how dopamine and opioid receptor antagonism affect neural processing of social and non-social rewards using functional neuroimaging and pharmacological interventions.

Connecting genomic results for psychiatric disorders to human brain cell types and regions reveals convergence with functional connectivity

The paper integrates genomic data with single-cell transcriptomics to identify brain cell types and regions associated with psychiatric disorders and traits.

Lifelong olfactory deprivation-dependent cortical reorganization restricted to orbitofrontal cortex

The paper replicates and extends findings showing that lifelong olfactory deprivation leads to orbitofrontal cortex morphological changes, but not in piriform cortex.

The how, when, and what of odor valence communication between the olfactory bulb and piriform cortex

This study identifies the timing, frequency bands, and direction of odor valence communication between the olfactory bulb and piriform cortex using human neural activity and valence ratings.

Acquired olfactory loss alters functional connectivity and morphology

This study examines how recent acquired olfactory loss affects cerebral morphology and functional connectivity in humans.

ODOR IDENTITY CAN BE EXTRACTED FROM THE RECIPROCAL CONNECTIVITY BETWEEN OLFACTORY BULB AND PIRIFORM CORTEX IN HUMANS

The paper shows that odor identity can be decoded from bidirectional oscillatory communication between the olfactory bulb and piriform cortex in humans.

The human olfactory bulb process odor valence representation and initiate motor avoidance behavior

This study shows that the human olfactory bulb processes odor valence through gamma and beta activity, with negative odors triggering motor avoidance behavior.

Normal Olfactory Functional Connectivity Despite Life-Long Absence of Olfactory Experiences

The paper compares functional connectivity in olfactory cortex between individuals with congenital anosmia and controls, finding no atypical connectivity despite lifelong olfactory sensory loss.

Adverse caregiving in infancy blunts neural processing of the mother: Translating across species

The paper shows that adverse caregiving in infancy reduces neural processing of the mother in rats, with potential implications for later-life pathology.

Non-invasive recording from the human olfactory bulb

This paper introduces a non-invasive method to record neural activity from the human olfactory bulb using EEG, termed Electrobulbogram (EBG), which is reliable and localized to the OB.

Structural changes in secondary, but not primary, sensory cortex in individuals with congenital olfactory sensory loss

The paper examines structural brain changes in individuals with congenital olfactory loss, finding atrophy in olfactory sulci and increased volume in medial orbital gyri, suggesting differential plasticity in secondary vs. primary olfactory cortex.

Sensory Loss Enhances Multisensory Integration Performance

This study investigates how olfactory sensory loss affects multisensory integration, finding that anosmia enhances temporal binding and semantic multisensory benefits in some cases.