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Hippocampal response to visual objects is related to visual memory functioning

Vannucci, Manila
Pezer, Nico
Helmstaedter, Christoph
Viggiano, Maria Pia
Elger, Christian E.
Grunwald, Thomas
Published in Neuroreport. 2008, vol. 19, no. 9, p. 965-968
Abstract The medial temporal lobe participates not only in episodic memory, but also in visual object processing. Here we asked whether these processes are linked within the human hippocampus. To this end, we recorded field potentials directly from the hippocampus proper during a visual object decision task in temporal lobe epilepsy patients with either normal or below normal visual memory performance. Only in patients with normal visual memory, did the hippocampus proper differentiate reliably between real and nonsense objects, whereas neural responses to both kinds of objects were virtually the same in patients whose visual memory performance was reduced. These findings suggest that neural responses to visual objects within the hippocampus proper are directly linked to visual memory performance.
Keywords AdolescentAdultAnalysis of VarianceElectroencephalography/methodsEpilepsy, Temporal Lobe/*pathology/*physiopathologyEvoked Potentials, Visual/*physiologyFemaleHippocampus/*physiopathologyHumansMaleMemory/*physiologyMiddle AgedNeuropsychological TestsPattern Recognition, Visual/*physiologyPhotic Stimulation/methods
PMID: 18521002
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Research group Groupe Schaller Karl-Lothard (neurochirurgie) (851)
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VANNUCCI, Manila et al. Hippocampal response to visual objects is related to visual memory functioning. In: Neuroreport, 2008, vol. 19, n° 9, p. 965-968. doi: 10.1097/WNR.0b013e328302c89c https://archive-ouverte.unige.ch/unige:19193

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Deposited on : 2012-03-27

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