Sensory Processes, Perception and Performance

Human experience of the world depends on a seamless interplay between sensory receptors, neural pathways and higher‐order brain regions. Physical stimuli – light, sound waves, pressure, chemicals and temperature – are transduced by specialised receptor cells into electrical signals. These signals ascend through hierarchies of processing stages, from primary sensory nuclei to association cortices, where simple features are combined into complex representations of objects, spatial layouts and events. Crucially, perceptual pathways are neither strictly feedforward nor purely serial. Parallel channels and feedback loops enable top‐down modulation by attention, expectation and prior knowledge, sharpening relevant inputs and suppressing irrelevant ones. Attention itself is a dynamic mechanism that selects subsets of incoming data for enhanced processing, while permitting automatic alerts to salient changes outside the current focus. Across the life span and in response to experience, sensory systems remain adaptable. Crossmodal reorganisation after sensory loss, experience‐dependent refinement of spatial maps and perceptual learning all illustrate the brain’s capacity to maintain performance under changing circumstances. In applied settings – from expert sports performance to rehabilitation after injury – both the fidelity of sensory representations and the efficiency of perceptual decision mechanisms determine success. Understanding these processes unites basic neuroscience with real‐world applications in human health, education and technology.

Research from Nature Portfolio

Motor regions classically linked to speech production also contribute to speech perception decisions. New work shows that bilateral subregions of the laryngeal motor cortex are actively engaged when listeners decide on tone or voicing contrasts in speech, with left‐hemisphere dominance under clear conditions and right‐hemisphere upregulation in noise. Transcranial stimulation experiments further reveal that each motor subregion supports distinct stages of perceptual decision‐making, mapping onto both sensitivity and evidence‐accumulation parameters. In a separate advance, device engineers have built an artificial visuotactile neuron that faithfully reproduces the principal features of biological multisensory cells. By integrating a photosensitive transistor with a tactile sensor, the device exhibits super‐additive responses, inverse‐effectiveness and precise temporal congruence, and encodes combined cues into probabilistic spiking events. These synthetic neurons provide a blueprint for neuromorphic circuits that capture core principles of crossmodal integration under natural‐time constraints.

Sensory Processes, Perception and Performance publication trend

The graph below shows the total number of articles in sensory processes, perception and performance across all publications each year (not limited to Nature Index journals).

Technical terms

Sensory transduction: Conversion of physical stimuli (light, sound, pressure, chemicals) into neural electrical signals by receptor cells.

Feedforward pathway: A sequence of neural processing stages in which each stage relays output to the next without back-projections.

Top-down processing: Modulation of early sensory areas by higher cognitive regions, driven by attention, expectation or task goals.

Crossmodal integration: Neural merging of information from different sensory modalities to form coherent percepts under uncertainty.

Supramodal representation: Encoding of information such that it is independent of the original sensory modality (e.g. object shape from vision or touch).

Inverse-effectiveness: Multisensory enhancement is greatest when individual sensory cues are weak or ambiguous.

Evidence-accumulation model: A decision framework in which noisy sensory information is integrated over time until a threshold for choice is reached.

References

1. Similar object shape representation encoded in the inferolateral occipitotemporal cortex of sighted and early blind people. PLOS Biology (2023).
2. The transformation of sensory to perceptual braille letter representations in the visually deprived brain. eLife (2024).
3. Development and experience-dependence of multisensory spatial processing. Trends in Cognitive Sciences (2023).
4. Bilateral human laryngeal motor cortex in perceptual decision of lexical tone and voicing of consonant. Nature Communications (2023).
5. A bio-inspired visuotactile neuron for multisensory integration. Nature Communications (2023).
6. Inputs, Outputs, and Multisensory Processing.