Mental Imagery Follows Similar Cortical Reorganization as Perception
| Autor: | B de Gelder, A W de Borst |
|---|---|
| Přispěvatelé: | Emotion, RS: FPN CN 10 |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Male
genetic structures SPATIAL LOCALIZATION Audiology 0302 clinical medicine 10. No inequality media_common PRIMARY AUDITORY-CORTEX Cerebral Cortex Neuronal Plasticity mental imagery 05 social sciences Middle Aged 16. Peace & justice Magnetic Resonance Imaging Cross modal plasticity medicine.anatomical_structure Imagination Female Psychology psychological phenomena and processes Mental image blindness Adult medicine.medical_specialty SOMATOSENSORY CORTEX decoding Cognitive Neuroscience media_common.quotation_subject OCCIPITAL CORTEX Sensory system 050105 experimental psychology tactile 03 medical and health sciences Cellular and Molecular Neuroscience WORKING-MEMORY Perception Physical Stimulation Neuroplasticity medicine otorhinolaryngologic diseases Humans 0501 psychology and cognitive sciences auditory VISUAL-CORTEX TACTILE ACUITY Working memory Tactile perception eye diseases Visual cortex Acoustic Stimulation ACTIVATION PATTERNS ANGLE DISCRIMINATION 030217 neurology & neurosurgery FUNCTIONAL-ORGANIZATION |
| Zdroj: | Cerebral Cortex, 29(7):bhy151, 2859-2875. Oxford University Press |
| ISSN: | 1047-3211 |
| Popis: | Cortical plasticity in congenitally blind individuals leads to cross-modal activation of the visual cortex and may lead to superior perceptual processing in the intact sensory domains. Although mental imagery is often defined as a quasi-perceptual experience, it is unknown whether it follows similar cortical reorganization as perception in blind individuals. In this study, we show that auditory versus tactile perception evokes similar intra-modal discriminative patterns in congenitally blind compared with sighted participants. These results indicate that cortical plasticity following visual deprivation does not influence broad intra-modal organization of auditory and tactile perception as measured by our task. Furthermore, not only the blind, but also the sighted participants showed cross-modal discriminative patterns for perception modality in the visual cortex. During mental imagery, both groups showed similar decoding accuracies for imagery modality in the intra-modal primary sensory cortices. However, no cross-modal discriminative information for imagery modality was found in early visual cortex of blind participants, in contrast to the sighted participants. We did find evidence of cross-modal activation of higher visual areas in blind participants, including the representation of specific-imagined auditory features in visual area V4. |
| Databáze: | OpenAIRE |
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