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Abstract:

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.

Registro:

Documento: Artículo
Título:Brain modularity in arthropods: Individual neurons that support "what" but not "where" memories
Autor:Sztarker, J.; Tomsic, D.
Filiación:Laboratorio de Neurobiología de la Memoria, Departamento Fisiología, Biología, Universidad de Buenos Aires, Instituto de Fisiologia, Biologia Molecular y Neurociencias, Consejo, Pabellón 2 Ciudad Universitaria, Intendente Güiraldes 2160, Buenos Aires 1428, Argentina
Departamento Biodiversidad y Biología Evolutiva, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellon 2 Ciudad Universitaria, Ing. Guiraldes 2160, Buenos Aires 1428, Argentina
Palabras clave: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
Año:2011
Volumen:31
Número:22
Página de inicio:8175
Página de fin:8180
DOI: http://dx.doi.org/10.1523/JNEUROSCI.6029-10.2011
Título revista:Journal of Neuroscience
Título revista abreviado:J. Neurosci.
ISSN:02706474
CODEN:JNRSD
PDF:https://bibliotecadigital.exactas.uba.ar/download/paper/paper_02706474_v31_n22_p8175_Sztarker.pdf
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02706474_v31_n22_p8175_Sztarker

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Citas:

---------- APA ----------
Sztarker, J. & Tomsic, D. (2011) . Brain modularity in arthropods: Individual neurons that support "what" but not "where" memories. Journal of Neuroscience, 31(22), 8175-8180.
http://dx.doi.org/10.1523/JNEUROSCI.6029-10.2011
---------- CHICAGO ----------
Sztarker, J., Tomsic, D. "Brain modularity in arthropods: Individual neurons that support "what" but not "where" memories" . Journal of Neuroscience 31, no. 22 (2011) : 8175-8180.
http://dx.doi.org/10.1523/JNEUROSCI.6029-10.2011
---------- MLA ----------
Sztarker, J., Tomsic, D. "Brain modularity in arthropods: Individual neurons that support "what" but not "where" memories" . Journal of Neuroscience, vol. 31, no. 22, 2011, pp. 8175-8180.
http://dx.doi.org/10.1523/JNEUROSCI.6029-10.2011
---------- VANCOUVER ----------
Sztarker, J., Tomsic, D. Brain modularity in arthropods: Individual neurons that support "what" but not "where" memories. J. Neurosci. 2011;31(22):8175-8180.
http://dx.doi.org/10.1523/JNEUROSCI.6029-10.2011