Marcus Haag
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View article: Stimulus-Dependent Theta Rhythmic Activity in Primate V1 Predicts Visual Detection
Stimulus-Dependent Theta Rhythmic Activity in Primate V1 Predicts Visual Detection Open
Theta-band (3–8 Hz) neural oscillations are integral to sensory processing and active exploration. Traditionally associated with higher-order areas such as hippocampus and prefrontal cortex, recent studies identified theta rhythmic modulat…
View article: Stimulus-Dependent Theta Rhythmic Activity in Primate V1 Predicts Visual Detection
Stimulus-Dependent Theta Rhythmic Activity in Primate V1 Predicts Visual Detection Open
Theta-band (3–8 Hz) neural oscillations are integral to sensory processing and active exploration. Traditionally associated with higher-order areas such as hippocampus and prefrontal cortex, recent studies identified theta rhythmic modulat…
View article: A chinrest-based approach to measure eye movements and experimental task engagement in macaques with minimal restraint
A chinrest-based approach to measure eye movements and experimental task engagement in macaques with minimal restraint Open
The chinrest method offers a significant advancement in primate cognitive testing by allowing for precise data collection while addressing animal welfare concerns, possibly leading to better scientific outcomes and a paradigm shift in prim…
View article: Optogenetic stimulation of the primary visual cortex drives activity in the visual association cortex
Optogenetic stimulation of the primary visual cortex drives activity in the visual association cortex Open
Developing optogenetic methods for research in non-human primates (NHP) is important for translational neuroscience and for delineating brain function with unprecedented specificity. Here we assess, in macaque monkeys, the selectivity by w…
View article: Dynamic reconfiguration of macaque brain networks during natural vision
Dynamic reconfiguration of macaque brain networks during natural vision Open
Natural vision engages a wide range of higher-level regions that integrate visual information over the large-scale brain network. How interareal connectivity reconfigures during the processing of ongoing natural visual scenes and how these…
View article: Stimulus dependence of theta rhythmic activity in primate V1
Stimulus dependence of theta rhythmic activity in primate V1 Open
A growing body of psychophysical research suggests that perceptual sampling of complex environments might occur at a theta rhythm (3-8 Hz). Electrophysiological recordings point to a neural origin of this theta-rhythmic sampling mechanism …
View article: Optogenetic stimulation of primate V1 reveals local laminar and large-scale cortical networks related to perceptual phosphenes
Optogenetic stimulation of primate V1 reveals local laminar and large-scale cortical networks related to perceptual phosphenes Open
Developing optogenetics in non-human primates (NHPs) is essential for translating its successful implementation in rodents to clinical applications in humans. However, information about how optogenetics influences the primate cortex remain…
View article: Dynamic reconfiguration of macaque brain networks during natural vision
Dynamic reconfiguration of macaque brain networks during natural vision Open
Raw data acquired under awake imaging conditions in the macaque monkey during free-viewing on natural scenes. The movie presented is also shared which is based on 30 sec 0N and OFF periods. Time-series echo planar imaging (EPI) data for ea…
View article: Dynamic reconfiguration of macaque brain networks during natural vision
Dynamic reconfiguration of macaque brain networks during natural vision Open
Raw data acquired under awake imaging conditions in the macaque monkey during free-viewing on natural scenes. The movie presented is also shared which is based on 30 sec 0N and OFF periods. Time-series echo planar imaging (EPI) data for ea…
View article: Dynamic reconfiguration of macaque brain networks during free-viewing of natural scenes
Dynamic reconfiguration of macaque brain networks during free-viewing of natural scenes Open
Natural vision involves the activation of a wide range of higher-level regions processing objects, motion, faces and actions. Here, we pursue a data-driven approach to explore how higher-level visual processes relate to the underlying stru…
View article: Improved methods for MRI-compatible implants in nonhuman primates
Improved methods for MRI-compatible implants in nonhuman primates Open
Our method preserves fMRI-compatibility and results in measurable improvement in BOLD signal without the use of contrast-enhanced agents. Furthermore, the long-term stability of our implants contributes positively to the wellbeing of NHPs …
View article: Attention Configures Synchronization Within Local Neuronal Networks for Processing of the Behaviorally Relevant Stimulus
Attention Configures Synchronization Within Local Neuronal Networks for Processing of the Behaviorally Relevant Stimulus Open
The need for fast and dynamic processing of relevant information imposes high demands onto the flexibility and efficiency of the nervous system. A good example for such flexibility is the attention-dependent selection of relevant sensory i…