Hartmut Schütze

Hartmut Schütze
Otto-von-Guericke-Universität Magdeburg | OvGU · Institute for Cognitive Neurology and Dementia Research

Dr. rer. nat.

About

63
Publications
6,941
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1,976
Citations
Citations since 2017
31 Research Items
932 Citations
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2017201820192020202120222023050100150200
2017201820192020202120222023050100150200
Additional affiliations
April 2008 - present
Otto-von-Guericke-Universität Magdeburg
Position
  • PostDoc Position

Publications

Publications (63)
Preprint
Full-text available
Successful explicit memory encoding is associated with inferior temporal activations and medial parietal deactivations, which are attenuated in aging. Here we used Dynamic Causal Modeling (DCM) of functional magnetic resonance imaging data to elucidate the information flow between hippocampus, parahippocampal place area (PPA) and precuneus during e...
Article
The substantia nigra/ventral tegmental area (SN/VTA), the brain’s most prominent dopamine source, is involved in novelty exploration and episodic memory. Using a novelty detection task combined with neuromelanin‐sensitive MRI, this work aimed to investigate the relationship between SN integrity, neural novelty response and subsequent recognition me...
Article
The new consensus definition of cognitive reserve (CR) provides a framework to study individual differences in cognitive functioning relative to aging and disease. CR denotes a property of the brain that allows for better than expected cognitive performance given the degree of age‐related brain changes or disease. More specifically, individual diff...
Article
Full-text available
Human cognitive abilities decline with increasing chronological age, with decreased explicit memory performance being most strongly affected. However, some older adults show "successful aging," that is, relatively preserved cognitive ability in old age. One explanation for this could be higher brain-structural integrity in these individuals. Altern...
Poster
Full-text available
This is my poster for 2022's annual meeting of the Organization for Human Brain Mapping. The default mode network (DMN) typically exhibits deactivations during demanding tasks compared to periods of relative rest. In functional magnetic resonance imaging (fMRI) studies of episodic memory encoding, increased activity in DMN regions even predicts la...
Article
Full-text available
Objective We assessed whether novelty-related fMRI activity in medial temporal lobe (MTL) regions and precuneus follows an inverted U-shape pattern across the clinical spectrum of increased Alzheimer disease (AD) risk as previously suggested. Specifically, we tested for potentially increased activity in individuals with higher AD risk due to subjec...
Preprint
Full-text available
The default mode network (DMN) typically exhibits deactivations during demanding tasks compared to periods of relative rest. In functional magnetic resonance imaging (fMRI) studies of episodic memory encoding, increased activity in DMN regions even predicts later forgetting in young healthy adults. This association is attenuated in older adults and...
Article
Full-text available
We investigated whether the impact of tau-pathology on memory performance and on hippocampal/medial temporal memory function in non-demented individuals depends on the presence of amyloid pathology, irrespective of diagnostic clinical stage. We conducted a cross-sectional analysis of the observational, multicentric DZNE-Longitudinal Cognitive Impai...
Preprint
Full-text available
Human cognitive abilities decline with increasing chronological age, with decreased explicit memory performance being most strongly affected. However, some older adults show "successful aging", that is, relatively preserved cognitive ability in old age. One explanation for this could be higher brain structural integrity in these individuals. Altern...
Preprint
Full-text available
Memory-related functional magnetic resonance imaging (fMRI) activations show age-related differences across multiple brain regions that can be captured in summary statistics like single-value scores. Recently, we described two single-value scores reflecting deviations from prototypical whole-brain fMRI activity of young adults during novelty proces...
Article
Recent work has found that memorability, an intrinsic image property predictive of memory, shows consistency across healthy controls (HC), subjective cognitive decline (SCD) and mild cognitive impairment (MCI). Looking at memorability pattern differences between groups, certain images in which HC outperform MCI or SCD individuals can also better pr...
Article
Neuroimaging markers based on MRI often provide better prediction than traditional neuropsychological scores. With advancements of machine learning, data patterns may offer opportunities to personalize clinical practice that leads to better outcomes for patients at risk of dementia such as Alzheimer’s disease (AD) (Davatzikos et al., 2019). AD is a...
Article
The NIA‐AA proposed ATN (Amyloid/Tau/Neurodegeneration) as a classification system for AD pathology. The Amyloid Cascade Hypothesis (ACH) implies a sequence across ATN groups that patients might undergo during transition from healthy towards AD: A‐T‐N‐→A+T‐N‐→A+T+N‐→A+T+N+. Here we assess the evidence for monotonic brain volume decline for this par...
Article
Full-text available
Older adults and particularly those at risk for developing dementia typically show a decline in episodic memory performance, which has been associated with altered memory network activity detectable via functional magnetic resonance imaging (fMRI). To quantify the degree of these alterations, a score has been developed as a putative imaging biomark...
Article
Full-text available
Subsequent memory paradigms allow to identify neural correlates of successful encoding by separating brain responses as a function of memory performance during later retrieval. In functional magnetic resonance imaging (fMRI), the paradigm typically elicits activations of medial temporal lobe, prefrontal and parietal cortical structures in young, he...
Preprint
Full-text available
Older adults and particularly those at risk for developing dementia typically show a decline in episodic memory performance, which has been associated with altered memory network activity detectable via functional magnetic resonance imaging (fMRI). To quantify the degree of these alterations, a score has been developed as a putative imaging biomark...
Poster
Full-text available
In older adults, high Functional Deviation During Encoding (FADE) from young adults during encoding of visual scenes has been linked to worse recollection and lower grey matter density in regions of early atrophy in Alzheimer´s disease (Düzel et al, 2011). We examined the association between cerebrospinal fluid (CSF) Alzheimer´s Disease biomarkers,...
Preprint
Full-text available
Subsequent memory paradigms allow to identify neural correlates of successful encoding by separating brain responses as a function of memory performance during later retrieval. In functional magnetic resonance imaging (fMRI), the paradigm typically elicits activations of medial temporal lobe, prefrontal and parietal cortical structures in young, he...
Article
Full-text available
Alterations of the brain extracellular matrix (ECM) can perturb the structure and function of brain networks like the hippocampus, a key region in human memory that is commonly affected in psychiatric disorders. Here, we investigated the potential effects of a genome‐wide psychiatric risk variant in the NCAN gene encoding the ECM proteoglycan neuro...
Article
Full-text available
Zusammenfassung Wir berichten über einen 30-jährigen Patienten, der mit 21 Jahren an einer fokalen Epilepsie mit epigastrischen Auren und nicht bewusst erlebten Anfällen sowie selten bilateralen tonisch-klonischen Anfällen mit Hippocampussklerose erkrankte. Dem Patienten wurde das resektive Standardverfahren (vordere Temporallappenresektion) sowie...
Article
Full-text available
Zusammenfassung: Wir berichten über einen 30-jährigen Patienten, der mit 21 Jahren an einer fokalen Epilepsie mit epigastrischen Auren und nicht bewusst erlebten Anfällen sowie selten bilateralen tonisch-klonischen Anfällen mit Hippocampussklerose erkrankte. Dem Patienten wurde das resektive Standardverfahren (vordere Temporallappenresektion) sowie...
Article
Full-text available
Introduction: Impaired long-term memory is a defining feature of mild cognitive impairment (MCI). We tested whether this impairment is item specific, limited to some memoranda, whereas some remain consistently memorable. Methods: We conducted item-based analyses of long-term visual recognition memory. Three hundred ninety-four participants (heal...
Preprint
Full-text available
INTRODUCTION Impaired long-term memory is a defining feature of Mild Cognitive Impairment (MCI). We tested whether this impairment is item-specific, limited to some memoranda whereas some remain consistently memorable. METHODS We conducted item-based analyses of long-term visual recognition memory. 394 participants (healthy controls (HC), Subjecti...
Article
Full-text available
Introduction We examined the association between cerebrospinal fluid (CSF) biomarkers of Alzheimer's disease, neural novelty responses, and brain volume in predementia old age. Methods We conducted a cross-sectional analysis of the observational, multicentric DZNE-Longitudinal Cognitive Impairment and Dementia Study (DELCODE) study. Seventy-six pa...
Article
Full-text available
There is now converging evidence from studies in animals and humans that the medial temporal lobes (MTLs) harbor anatomically distinct processing pathways for object and scene information. Recent functional magnetic resonance imaging studies in humans suggest that this domain-specific organization may be associated with a functional preference of t...
Article
Full-text available
The ability to form long-term memories for novel events depends on information processing within the hippocampus (HC) and entorhinal cortex (EC). The HC-EC circuitry shows a quantitative segregation of anatomical directionality into different neuronal layers. Whereas superficial EC layers mainly project to dentate gyrus (DG), CA3 and apical CA1 lay...
Article
Full-text available
The guanine nucleotide exchange factor RASGRF1 is an important regulator of intracellular signaling and neural plasticity in the brain. RASGRF1-deficient mice exhibit a complex phenotype with learning deficits and ocular abnormalities. Also in humans, a genome-wide association study has identified the single nucleotide polymorphism (SNP) rs8027411...
Article
Full-text available
Recent genome-wide association studies have pointed to single-nucleotide polymorphisms (SNPs) in genes encoding the neuronal calcium channel CaV1.2 (CACNA1C; rs1006737) and the presynaptic active zone protein Piccolo (PCLO; rs2522833) as risk factors for affective disorders, particularly major depression. Previous neuroimaging studies of depression...
Conference Paper
Full-text available
Alzheimer disease (AD) at an early stage is characterized by a synaptic loss and atrophy in the apical layer of the CA1 part of the hippocampus, the stratum radiatum and stratum lacunosum-moleculare (SRLM). It was shown in vivo that patients with mild AD exhibit a reduced thickness of the SRLM. We propose a new approach to measure SRLM thickness in...
Article
Reward and novelty are potent learning signals that critically rely on dopaminergic midbrain responses. Recent findings suggest that although reward and novelty are likely to interact, both functions may be subserved by distinct neuronal clusters. We used high-resolution functional magnetic resonance imaging (fMRI) to isolate neural responses to re...
Article
Background The increased tidal volume (V(T)) applied to the ventilated lung during one-lung ventilation (OLV) enhances cyclic alveolar recruitment and mechanical stress. It is unknown whether alveolar recruitment maneuvers (ARMs) and reduced V(T) may influence tidal recruitment and lung density. Therefore, the effects of ARM and OLV with different...
Article
Patients with attention-deficit/hyperactivity disorder (ADHD) show deficits in working memory (WM) which may be related to prefrontal dysfunction. Methylphenidate (MPH) can restore WM deficits in ADHD by enhancing prefrontal activity. At the same time, changes in striatal activation could cause ADHD patients to be more interference-sensitive during...
Article
Full-text available
The prefrontal cortex (PFC) is assumed to contribute to goal-directed episodic encoding by exerting cognitive control on medial temporal lobe (MTL) memory processes. However, it is thus far unclear to what extent the contribution of PFC-MTL interactions to memory manifests at a structural anatomical level. We combined functional magnetic resonance...
Article
Full-text available
The increased tidal volume (V(T)) applied to the ventilated lung during one-lung ventilation (OLV) enhances cyclic alveolar recruitment and mechanical stress. It is unknown whether alveolar recruitment maneuvers (ARMs) and reduced V(T) may influence tidal recruitment and lung density. Therefore, the effects of ARM and OLV with different V(T) on pul...
Conference Paper
Full-text available
Einleitung: Störungen des Arbeitsgedächtnisses (AG) stellen einen wichtigen Aspekt der kognitiven Defizite bei Patienten mit paranoid-halluzinatorischer Schizophrenie dar. Dieses ist kritisch abhängig von der funktionellen und strukturellen Integrität des präfrontalen und limbischen Kortex, Hirnstrukturen, die bei der Schizophrenie Veränderungen ze...
Article
Full-text available
Experience-dependent alterations in the human brain's white-matter microstructure occur in early adulthood, but it is unknown whether such plasticity extends throughout life. We used cognitive training, diffusion-tensor imaging (DTI), and structural MRI to investigate plasticity of the white-matter tracts that connect the left and right hemisphere...
Article
Declarative memory disturbances, known to substantially contribute to cognitive impairment in schizophrenia, have previously been attributed to prefrontal as well as hippocampal dysfunction. To characterize the role of prefrontal and mesolimbic/hippocampal dysfunction during memory encoding in schizophrenia. Neuronal activation in schizophrenia pat...
Article
We investigated whether preservation of encoding-related brain activity patterns in older age reflects successful aging in long-term memory. Using a statistical matching technique, we identified groups of healthy older adults with different degrees of Functional Activity Deviation during Encoding (FADE) from young adults in a memory network compris...
Article
Knowledge about cause and effect relationships (e.g., virus-epidemic) is essential for predicting changes in the environment and for anticipating the consequences of events and one's own actions. Although there is evidence that predictions and learning from prediction errors are instrumental in acquiring causal knowledge, it is unclear whether pred...
Article
We hypothesized that novel stimuli represent salient learning signals that can motivate 'exploration' in search for potential rewards. In computational theories of reinforcement learning, this is referred to as the novelty 'exploration bonus' for rewards. If true, stimulus novelty should enhance the reward anticipation signals in brain areas that a...
Article
Age-related dysfunctions in cholinergic and dopaminergic neuromodulation are assumed to contribute to age-associated impairment of explicit memory. Both neurotransmitters also modulate attention, working memory, and processing speed. To date, in vivo evidence linking structural age-related changes in these neuromodulatory systems to dysfunction wit...
Article
The present study investigated the neural basis of attention in the somato-sensory system. Subjects directed their attention towards their left or right hand while functional MRI data was collected during tactile stimulation of the fingers. Activations evoked by tactile stimuli when a stimulated hand was attended vs. unattended were contrasted. The...
Article
Full-text available
One-lung ventilation (OLV) exposes the dependent lung to increased mechanical stress which may affect the postoperative course. This study evaluates regional pulmonary gas/tissue distribution in a porcine model of OLV. Nine anaesthetized and mechanically ventilated (V(T)=10 ml kg(-1), FI(O(2))=0.40, PEEP=5 cm H(2)O) pigs were studied. After lung se...
Article
Exploring a novel environment can facilitate subsequent hippocampal long-term potentiation in animals. We report a related behavioral enhancement in humans. In two separate experiments, recollection and free recall, both measures of hippocampus-dependent memory formation, were enhanced for words studied after a 5-min exposure to unrelated novel as...
Article
Age-related dysfunction in dopaminergic neuromodulation is assumed to contribute to age-associated memory impairment. However, to date there are no in vivo data on how structural parameters of the substantia nigra/ventral tegmental area (SN/VTA), the main origin of dopaminergic projections, relate to memory performance in healthy young and older ad...
Article
Full-text available
Normal aging is associated with neuronal loss in the dopaminergic midbrain (substantia nigra/ventral tegmental area, SN/VTA), a region that has recently been implicated in processing novel stimuli as part of a mesolimbic network including the hippocampus. Here, we quantified age-related structural degeneration of the mesolimbic system using magneti...
Article
Full-text available
The ability to learn stimulus-reward associations on the basis of reward prediction errors critically depends on the mesolimbic dopaminergic system including the dopaminergic midbrain and the ventral striatum. It is known that healthy elderly and patients with Parkinson's disease are less proficient than healthy young adults in learning stimulus-re...
Article
Psychophysical studies suggest that figure-ground organization is a largely autonomous process that guides--and thus precedes--allocation of attention and object recognition. The discovery of border-ownership representation in single neurons of early visual cortex has confirmed this view. Recent theoretical studies have demonstrated that border-own...
Article
Perceptual priming is a fundamental long-term memory capability that allows more efficient and faster responding to a stimulus as a result of prior exposure to that stimulus. The two major components of priming are facilitated response expression and improved stimulus identification. Recent fMRI studies have identified a potential neural correlate...
Article
Full-text available
Shaped by evolutionary processes, sensory systems often represent behaviorally relevant stimuli with higher fidelity than other stimuli. The stimulus dependence of neural reliability could therefore provide an important clue in a search for relevant sensory signals. We explore this relation and introduce a novel iterative algorithm that allows one...
Article
Full-text available
Animals that rely on acoustic communication to find mates, such as grasshoppers, are astonishingly accurate in recognizing song patterns that are specific to their own species1, ². This raises the question of whether they can also solve a far more complicated task that might provide a basis for mate preference and sexual selection: to distinguish i...
Article
Full-text available
We investigate the transduction of sound stimuli into neural responses and focus on locust auditory receptor cells. As in other mechanosensory model systems, these neurons integrate acoustic inputs over a fairly broad frequency range. To test three alternative hypotheses about the nature of this spectral integration (amplitude, energy, pressure), w...
Article
Full-text available
Stridulation was elicited in tethered gomphocerine grasshoppers of the species Stenobothrus rubicundus in order to identify interneurons of the stridulation pattern generator, and describe their morphological and physiological properties. Nine types of such neurons could be found and characterized; eight of those could additionally be compared to c...

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