Visual mental imagery engages the left fusiform gyrus, but not the early visual cortex: a analysis of neuroimaging evidence - Sorbonne Université Accéder directement au contenu
Article Dans Une Revue Neuroscience and Biobehavioral Reviews Année : 2021

Visual mental imagery engages the left fusiform gyrus, but not the early visual cortex: a analysis of neuroimaging evidence

Résumé

The dominant neural model of visual mental imagery (VMI) stipulates that memories from the medial temporal lobe acquire sensory features in early visual areas. However, neurological patients with damage restricted to the occipital cortex typically show perfectly vivid VMI, while more anterior damages extending into the temporal lobe, especially in the left hemisphere, often cause VMI impairments. Here we present two major results reconciling neuroimaging findings in neurotypical subjects with the performance of brain-damaged patients: (1) a large-scale metaanalysis of 46 fMRI studies, of which 27 investigated specifically visual mental imagery, revealed that VMI engages fronto-parietal networks and a well-delimited region in the left fusiform gyrus. (2) A Bayesian analysis showing no evidence for imagery-related activity in early visual cortices. We propose a revised neural model of VMI that draws inspiration from recent cytoarchitectonic and lesion studies, whereby fronto-parietal networks initiate, modulate, and maintain activity in a core temporal network centered on the fusiform imagery node, a highlevel visual region in the left fusiform gyrus.
Fichier principal
Vignette du fichier
201203_metaanalysis_clean_R3.pdf (6.94 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03241602 , version 1 (28-05-2021)
hal-03241602 , version 2 (24-03-2023)

Identifiants

Citer

Alfredo Spagna, Dounia Hajhajate, Jianghao Liu, Paolo Bartolomeo. Visual mental imagery engages the left fusiform gyrus, but not the early visual cortex: a analysis of neuroimaging evidence. Neuroscience and Biobehavioral Reviews, 2021, 122, pp.201-217. ⟨10.1016/j.neubiorev.2020.12.029⟩. ⟨hal-03241602v2⟩
135 Consultations
454 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More