Neurofunctional signature of hyperfamiliarity for unknown faces

E. Negro, F. D’Agata, P. Caroppo, M. Coriasco, F. Ferrio, A. Celeghin, M. Diano, E. Rubino, Beatrice de Gelder, I. Rainero, L. Pinessi, Marco Tamietto

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Abstract

Hyperfamiliarity for unknown faces is a rare selective disorder that consists of the disturbing and abnormal feeling of familiarity for unknown faces, while recognition of known faces is normal. In one such patient we investigated with a multimodal neuroimaging design the hitherto undescribed neural signature associated with hyperfamiliarity feelings. Behaviorally, signal detection methods revealed that the patient’s discrimination sensitivity between familiar and unfamiliar faces was significantly lower than that of matched controls, and her response criterion for familiarity decisions was significantly more liberal. At the neural level, while morphometric analysis and single-photon emission CT (SPECT) showed the atrophy and hypofunctioning of the left temporal regions, functional magnetic resonance imaging (fMRI) revealed that hyperfamiliarity feelings were selectively associated to enhanced activity in the right medial and inferior temporal cortices. We therefore characterize the neurofunctional signature of hyperfamiliarity for unknown faces as related to the loss of coordinated activity between the complementary face processing functions of the left and right temporal lobes.
Original languageEnglish
Article numbere0129970
JournalPLoS ONE
Volume10
Issue number7
DOIs
Publication statusPublished - 2015

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Neuroimaging
Signal detection
Face recognition
Photons
Processing
Magnetic Resonance Imaging
Recognition (Psychology)

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Negro, E., D’Agata, F., Caroppo, P., Coriasco, M., Ferrio, F., Celeghin, A., ... Tamietto, M. (2015). Neurofunctional signature of hyperfamiliarity for unknown faces. PLoS ONE, 10(7), [e0129970]. https://doi.org/10.1371/journal.pone.0129970
Negro, E. ; D’Agata, F. ; Caroppo, P. ; Coriasco, M. ; Ferrio, F. ; Celeghin, A. ; Diano, M. ; Rubino, E. ; de Gelder, Beatrice ; Rainero, I. ; Pinessi, L. ; Tamietto, Marco. / Neurofunctional signature of hyperfamiliarity for unknown faces. In: PLoS ONE. 2015 ; Vol. 10, No. 7.
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abstract = "Hyperfamiliarity for unknown faces is a rare selective disorder that consists of the disturbing and abnormal feeling of familiarity for unknown faces, while recognition of known faces is normal. In one such patient we investigated with a multimodal neuroimaging design the hitherto undescribed neural signature associated with hyperfamiliarity feelings. Behaviorally, signal detection methods revealed that the patient’s discrimination sensitivity between familiar and unfamiliar faces was significantly lower than that of matched controls, and her response criterion for familiarity decisions was significantly more liberal. At the neural level, while morphometric analysis and single-photon emission CT (SPECT) showed the atrophy and hypofunctioning of the left temporal regions, functional magnetic resonance imaging (fMRI) revealed that hyperfamiliarity feelings were selectively associated to enhanced activity in the right medial and inferior temporal cortices. We therefore characterize the neurofunctional signature of hyperfamiliarity for unknown faces as related to the loss of coordinated activity between the complementary face processing functions of the left and right temporal lobes.",
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Negro, E, D’Agata, F, Caroppo, P, Coriasco, M, Ferrio, F, Celeghin, A, Diano, M, Rubino, E, de Gelder, B, Rainero, I, Pinessi, L & Tamietto, M 2015, 'Neurofunctional signature of hyperfamiliarity for unknown faces', PLoS ONE, vol. 10, no. 7, e0129970. https://doi.org/10.1371/journal.pone.0129970

Neurofunctional signature of hyperfamiliarity for unknown faces. / Negro, E.; D’Agata, F.; Caroppo, P.; Coriasco, M.; Ferrio, F.; Celeghin, A.; Diano, M.; Rubino, E.; de Gelder, Beatrice; Rainero, I.; Pinessi, L.; Tamietto, Marco.

In: PLoS ONE, Vol. 10, No. 7, e0129970, 2015.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Negro, E.

AU - D’Agata, F.

AU - Caroppo, P.

AU - Coriasco, M.

AU - Ferrio, F.

AU - Celeghin, A.

AU - Diano, M.

AU - Rubino, E.

AU - de Gelder, Beatrice

AU - Rainero, I.

AU - Pinessi, L.

AU - Tamietto, Marco

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AB - Hyperfamiliarity for unknown faces is a rare selective disorder that consists of the disturbing and abnormal feeling of familiarity for unknown faces, while recognition of known faces is normal. In one such patient we investigated with a multimodal neuroimaging design the hitherto undescribed neural signature associated with hyperfamiliarity feelings. Behaviorally, signal detection methods revealed that the patient’s discrimination sensitivity between familiar and unfamiliar faces was significantly lower than that of matched controls, and her response criterion for familiarity decisions was significantly more liberal. At the neural level, while morphometric analysis and single-photon emission CT (SPECT) showed the atrophy and hypofunctioning of the left temporal regions, functional magnetic resonance imaging (fMRI) revealed that hyperfamiliarity feelings were selectively associated to enhanced activity in the right medial and inferior temporal cortices. We therefore characterize the neurofunctional signature of hyperfamiliarity for unknown faces as related to the loss of coordinated activity between the complementary face processing functions of the left and right temporal lobes.

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Negro E, D’Agata F, Caroppo P, Coriasco M, Ferrio F, Celeghin A et al. Neurofunctional signature of hyperfamiliarity for unknown faces. PLoS ONE. 2015;10(7). e0129970. https://doi.org/10.1371/journal.pone.0129970