Prof. Dr. Anna Schroeder

Keywords: neural circuits, internal states, behavior, zona incerta, psychiatric disease, deep brain stimulation, synaptic plasticity, learning and memory, in vivo imaging

Research methods: In vivo calcium imaging using 2-photon microscopy or Miniscopes, whole-cell patch-clamp slice electrophysiology, optogenetics, chemogenetics, viral circuit tracing, single-cell RNA-sequencing, multiplexed fluorescent in situ hybridization, state-driven behavioral paradigms, transgenic mouse models

Brief research description: The way that we feel has a profound influence over our behavior. Emotions like fear or motivations like curiosity can prompt us to flee from danger or to explore, while physiological needs such as hunger or fatigue might cause us to conserve energy by reducing movement. Yet, our responses are highly adaptable; in different environments, we might hide or fight when afraid, forage or rest when hungry, showing that our behaviors are flexible and shaped by both internal states and the external context. Despite the critical importance of these computations for survival, we know surprisingly little about where in the brain they occur or how the brain achieves them. The goal of the Schroeder lab is to investigate how the brain generates internal states and then uses this vital information, along with external sensory cues and learned information from past experiences, to adapt behavior in dynamic environments. In particular, our lab studies how emotions, motivations and needs are processed in the subthalamic circuits of the mysterious zona incerta, an emerging hub that regulates an impressive range of behaviors. In parallel, we aim to develop new therapeutic directions for psychiatric disease via neuromodulation. To achieve these goals, we use cutting-edge molecular, cellular and circuit-level technologies in mouse models, along with diverse behavioral paradigms and advanced machine learning techniques.

Selected publications:

Hartung, J., Schroeder A., Péréz Vázquez R.A., Poorthuis R.B., Letzkus J.J.*. (2024) Layer 1 Ndnf interneurons are specialized top-down master regulators of superficial cortical circuits. Cell Reports. 43(5), 114212. DOI: 10.1101/2023.10.02.560136.

Schroeder A.*, Pardi M.B., Keijser J., Dalmay T., Groisman A.I., Schuman E.M., Sprekeler H., Letzkus J.J.*. (2023) Inhibitory top-down projections from zona incerta mediate neocortical memory. Neuron. 111(5), 727-738.e728. DOI: 10.1016/j.neuron.2022.12.010.

Pardi M.B., Schroeder A., Letzkus J.J.*. (2023) Probing top-down information in neocortical layer 1. Trends in Neurosciences. 46(1), 20–31. DOI: 10.1016/j.tins.2022.11.001.

Condomitti G., Wierda K.D., Schroeder A., Rubio S.E., Vennekens K.M., Orlandi C., Martemyanov K.A., Gounko N.V., Savas J.N., de Wit J.*. (2018) An input-specific orphan receptor GPR158-HSPG interaction organizes hippocampal mossy fiber-CA3 synapses. Neuron. 100(1), 201–215.e9. DOI: 10.1016/j.neuron.2018.08.038.

Schroeder A., Vanderlinden J., Vints K., Ribeiro L.F., Vennekens K.M., Gounko N.V., Wierda K.D., de Wit J.*. (2018) A modular organization of LRR protein-mediated synaptic adhesion defines synapse identity. Neuron. 99(2), 329–344.e7. Chosen as an ‘Issue Highlight.’ DOI: 10.1016/j.neuron.2018.06.026.