Cross-Modal Plasticity in Sensory Cognition
Summary
Cross-modal plasticity describes the capacity of the brain to rewire itself following loss or alteration of a sensory modality, such that regions deprived of their typical input begin to process information from other senses. This phenomenon encompasses changes at multiple levels, from synaptic strengthening and white matter reorganisation to large-scale network realignments. Deprived sensory cortices, particularly in early blindness or deafness, may assume roles in tactile, auditory or higher cognitive tasks, reflecting both adaptive compensation and domain-general recruitment. Recent work has revealed that some deprived areas integrate into control networks, while others retain supramodal functions related to object recognition and spatial processing. Structural studies document alterations in cortical thickness and connectivity, whereas functional imaging highlights dynamic shifts in activation patterns and inter-regional coupling. Such plasticity underlies enhanced perceptual skills in sensory-deprived individuals, informs the design of sensory substitution devices and guides rehabilitation strategies. Understanding the mechanisms and limits of cross-modal reorganisation offers insight into brain resilience and the principles of sensory cognition.
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Cross-Modal Plasticity in Sensory Cognition publication trend
The graph below shows the total number of articles in cross-modal plasticity in sensory cognition across all publications each year (not limited to Nature Index journals).
Technical terms
Cross-modal plasticity: Reorganisation of brain regions deprived of their usual sensory input to process information from other modalities.
Multiple-demand network: A set of frontal and parietal regions engaged by diverse cognitive control tasks, irrespective of sensory modality.
Functional connectivity: Statistical coupling between spatially distinct brain regions during rest or task performance.
Lateral occipitotemporal cortex (ILOTC): A region in the ventral visual stream implicated in object shape representation across vision and touch.
Sensory representation: Neural encoding of raw input from a peripheral sense, such as tactile or auditory signals.
Perceptual representation: Higher-order neural encoding that abstracts and integrates sensory input into behaviourally relevant formats.
References
- The visual cortex in the blind but not the auditory cortex in the deaf becomes multiple-demand regions. Brain (2024).
- Brain structural changes in blindness: a systematic review and an anatomical likelihood estimation (ALE) meta-analysis. Neuroscience & Biobehavioral Reviews (2023).
- The transformation of sensory to perceptual braille letter representations in the visually deprived brain. eLife (2024).
- Similar object shape representation encoded in the inferolateral occipitotemporal cortex of sighted and early blind people. PLOS Biology (2023).
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