Brain modularity in arthropods: Individual neurons that support "what" but not "where" memories
Experiments with insects and crabs have demonstrated their remarkable capacity to learn and memorize complex visual features (Giurfa et al., 2001; Pedreira and Maldonado, 2003; Chittka and Niven, 2009). Such abilities are thought to require modular brain processing similar to that occurring in verte...
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2011
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paper:paper_02706474_v31_n22_p8175_Sztarker2023-06-08T15:24:49Z Brain modularity in arthropods: Individual neurons that support "what" but not "where" memories Sztarker, Julieta Tomsic, Daniel animal behavior animal experiment article brain function controlled study crab learning long term memory male memory consolidation nerve cell network neuromodulation neurotransmission nonhuman priority journal stimulus response task performance visual stimulation Action Potentials Animals Brachyura Generalization, Stimulus Learning Male Memory Neurons Photic Stimulation Experiments with insects and crabs have demonstrated their remarkable capacity to learn and memorize complex visual features (Giurfa et al., 2001; Pedreira and Maldonado, 2003; Chittka and Niven, 2009). Such abilities are thought to require modular brain processing similar to that occurring in vertebrates (Menzel and Giurfa, 2001). Yet, physiological evidence for this type of functioning in the small brains of arthropods is still scarce (Liu et al., 1999, 2006; Menzel and Giurfa, 2001). In the crab Chasmagnathus granulatus, the learning rate as well as the long-term memory of a visual stimulus has been found to be reflected in the performance of identified lobula giant neurons (LGs) (Tomsic et al., 2003). The memory can only be evoked in the training context, indicating that animals store two components of the learned experience, one related to the visual stimulus and one related to the visual context (Tomsic et al., 1998; Hermitte et al., 1999). By performing intracellular recordings in the intact animal, we show that the ability of crabs to generalize the learned stimulus into new space positions and to distinguish it from a similar but unlearned stimulus, two of the main attributes of stimulus memory, is reflected by the performance of the LGs. Conversely, we found that LGs do not support the visual context memory component. Our results provide physiological evidence that the memory traces regarding "what" and "where" are stored separately in the arthropod brain. © 2011 the authors. Fil:Sztarker, J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Tomsic, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2011 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02706474_v31_n22_p8175_Sztarker http://hdl.handle.net/20.500.12110/paper_02706474_v31_n22_p8175_Sztarker |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
animal behavior animal experiment article brain function controlled study crab learning long term memory male memory consolidation nerve cell network neuromodulation neurotransmission nonhuman priority journal stimulus response task performance visual stimulation Action Potentials Animals Brachyura Generalization, Stimulus Learning Male Memory Neurons Photic Stimulation |
| spellingShingle |
animal behavior animal experiment article brain function controlled study crab learning long term memory male memory consolidation nerve cell network neuromodulation neurotransmission nonhuman priority journal stimulus response task performance visual stimulation Action Potentials Animals Brachyura Generalization, Stimulus Learning Male Memory Neurons Photic Stimulation Sztarker, Julieta Tomsic, Daniel Brain modularity in arthropods: Individual neurons that support "what" but not "where" memories |
| topic_facet |
animal behavior animal experiment article brain function controlled study crab learning long term memory male memory consolidation nerve cell network neuromodulation neurotransmission nonhuman priority journal stimulus response task performance visual stimulation Action Potentials Animals Brachyura Generalization, Stimulus Learning Male Memory Neurons Photic Stimulation |
| description |
Experiments with insects and crabs have demonstrated their remarkable capacity to learn and memorize complex visual features (Giurfa et al., 2001; Pedreira and Maldonado, 2003; Chittka and Niven, 2009). Such abilities are thought to require modular brain processing similar to that occurring in vertebrates (Menzel and Giurfa, 2001). Yet, physiological evidence for this type of functioning in the small brains of arthropods is still scarce (Liu et al., 1999, 2006; Menzel and Giurfa, 2001). In the crab Chasmagnathus granulatus, the learning rate as well as the long-term memory of a visual stimulus has been found to be reflected in the performance of identified lobula giant neurons (LGs) (Tomsic et al., 2003). The memory can only be evoked in the training context, indicating that animals store two components of the learned experience, one related to the visual stimulus and one related to the visual context (Tomsic et al., 1998; Hermitte et al., 1999). By performing intracellular recordings in the intact animal, we show that the ability of crabs to generalize the learned stimulus into new space positions and to distinguish it from a similar but unlearned stimulus, two of the main attributes of stimulus memory, is reflected by the performance of the LGs. Conversely, we found that LGs do not support the visual context memory component. Our results provide physiological evidence that the memory traces regarding "what" and "where" are stored separately in the arthropod brain. © 2011 the authors. |
| author |
Sztarker, Julieta Tomsic, Daniel |
| author_facet |
Sztarker, Julieta Tomsic, Daniel |
| author_sort |
Sztarker, Julieta |
| title |
Brain modularity in arthropods: Individual neurons that support "what" but not "where" memories |
| title_short |
Brain modularity in arthropods: Individual neurons that support "what" but not "where" memories |
| title_full |
Brain modularity in arthropods: Individual neurons that support "what" but not "where" memories |
| title_fullStr |
Brain modularity in arthropods: Individual neurons that support "what" but not "where" memories |
| title_full_unstemmed |
Brain modularity in arthropods: Individual neurons that support "what" but not "where" memories |
| title_sort |
brain modularity in arthropods: individual neurons that support "what" but not "where" memories |
| publishDate |
2011 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02706474_v31_n22_p8175_Sztarker http://hdl.handle.net/20.500.12110/paper_02706474_v31_n22_p8175_Sztarker |
| work_keys_str_mv |
AT sztarkerjulieta brainmodularityinarthropodsindividualneuronsthatsupportwhatbutnotwherememories AT tomsicdaniel brainmodularityinarthropodsindividualneuronsthatsupportwhatbutnotwherememories |
| _version_ |
1768546158228013056 |