Recognition Receiver Operating Characteristic Curves: The Complex Influence of Input Statistics, Memory, and Decision-making
Hakobyan, O., &
Cheng, S.Journal of Cognitive Neuroscience,
33(6), 1032–1055
@article{HakobyanCheng2021,
author = {Hakobyan, Olya and Cheng, Sen},
title = {Recognition Receiver Operating Characteristic Curves: The Complex Influence of Input Statistics, Memory, and Decision-making},
journal = {Journal of Cognitive Neuroscience},
volume = {33},
number = {6},
pages = {1032–1055},
month = {May},
year = {2021},
doi = {10.1162/jocn_a_01697},
}
2020
Improving sensory representations using episodic memory
Görler, R.,
Wiskott, L., &
Cheng, S.Hippocampus,
30(6), 638–656
@article{GörlerWiskottCheng2020,
author = {Görler, Richard and Wiskott, Laurenz and Cheng, Sen},
title = {Improving sensory representations using episodic memory},
journal = {Hippocampus},
volume = {30},
number = {6},
pages = {638–656},
month = {December},
year = {2020},
doi = {10.1002/hipo.23186},
}
2019
How do memory modules differentially contribute to familiarity and recollection?
Hakobyan, O., &
Cheng, S.Behavioral and Brain Sciences,
42, e288
@article{HakobyanCheng2019,
author = {Hakobyan, Olya and Cheng, Sen},
title = {How do memory modules differentially contribute to familiarity and recollection?},
journal = {Behavioral and Brain Sciences},
volume = {42},
pages = {e288},
year = {2019},
doi = {10.1017/S0140525X19001833},
}
2018
The reduction of adult neurogenesis in depression impairs the retrieval of new as well as remote episodic memory
Fang, J., Demic, S., &
Cheng, S.PLOS ONE,
13(6), e0198406
@article{FangDemicCheng2018,
author = {Fang, Jing and Demic, Selver and Cheng, Sen},
title = {The reduction of adult neurogenesis in depression impairs the retrieval of new as well as remote episodic memory},
journal = {PLOS ONE},
volume = {13},
number = {6},
pages = {e0198406},
month = {June},
year = {2018},
doi = {10.1371/journal.pone.0198406},
}
The Interaction between Semantic Representation and Episodic Memory
Fang, J., Rüther, N., Bellebaum, C.,
Wiskott, L., &
Cheng, S.Neural Computation,
30(2), 293–332
@article{FangRütherBellebaumEtAl2018,
author = {Fang, Jing and Rüther, Naima and Bellebaum, Christian and Wiskott, Laurenz and Cheng, Sen},
title = {The Interaction between Semantic Representation and Episodic Memory},
journal = {Neural Computation},
volume = {30},
number = {2},
pages = {293–332},
month = {February},
year = {2018},
doi = {10.1162/neco_a_01044},
}
Fang, J., Rüther, N., Bellebaum, C.,
Wiskott, L., &
Cheng, S.. (2018). The Interaction between Semantic Representation and Episodic Memory.
Neural Computation,
30(2), 293–332.
http://doi.org/10.1162/neco_a_01044
The Institut für Neuroinformatik (INI) is a central research unit of the
Ruhr-Universität Bochum. We aim to understand the fundamental principles
through which organisms generate behavior and cognition while linked to
their environments through sensory systems and while acting in those
environments through effector systems. Inspired by our insights into
such natural cognitive systems, we seek new solutions to problems of
information processing in artificial cognitive systems. We draw from a
variety of disciplines that include experimental approaches from
psychology and neurophysiology as well as theoretical approaches from
physics, mathematics, electrical engineering and applied computer
science, in particular machine learning, artificial intelligence, and
computer vision.
Universitätsstr. 150, Building NB, Room 3/32
D-44801 Bochum, Germany
Tel: (+49) 234 32-28967
Fax: (+49) 234 32-14210
Episodic memory is akin to a mosaic assembled from different pieces of past experiences: the affective state, the context and participants of the event as well as sensory details. Episodic memories are far from flawless copies of the actual experiences, but rather reconstructions thereof. We hypothesize that reconstruction is based on representations in sensory and semantic systems and that the hippocampus in the medial temporal lobe is critical for episodic memory because it performs integration of higher-order representations. We therefore study, on the one hand, how episodic memories are stored and retrieved in interaction with the sensory and semantic systems. On the other hand, we investigate how episodic memories influence these sensory and semantic systems. In particular, we have been able to show that episodic memory is more accurate when perceptual-semantic representations are better tuned to the statistics of the input. In the other direction, we found that replaying perceptual information from previous experiences in episodic memory facilitates the optimization of perceptual-semantic representations. Furthermore, we investigate how to dissociate the effect of sensory processing from that of memory operations in cognitive tasks such as recognition memory and visual discrimination.