Tactile and Sensory Interactions

The paper estimates tactile afferent fiber densities across the whole body using multiple methods and finds that the total number of tactile fibers is approximately 230,000 with regional variations.

The paper shows that humans construct the external location of touch after determining which hand was stimulated, not automatically upon stimulus occurrence.

This study investigates tactile anhedonia in women with and recovered from Anorexia Nervosa, finding it persists as a trait and is linked to top-down anticipation rather than bottom-up interoceptive deficits.

This study examines how early blindness affects sensorimotor behavior and sensory reliance in short-tailed opossums, finding increased tactile accuracy but reduced flexibility when whiskers are trimmed.

The paper shows that burst gap coding, previously observed in mechanical stimulation, also applies to electrical nerve stimulation, influencing tactile frequency perception through temporal spike patterns.

The paper investigates how multifractal fluctuations across anatomical sleeves support haptic perception via dynamic touch, showing their role in heaviness and length judgments.

This study examines how scanning speed affects texture-elicited vibrations on human fingertips, finding increased intensity and frequency shifts with higher speeds.

This study shows rats adapt their whisking behavior based on context, reallocating sensorimotor resources to maintain exploratory coverage.

The paper shows that fractal fluctuations in mechanical body movements support accurate perception of object properties through effortful touch.

This study shows that tactile localization improves when participants actively search for a touch with feedback, but not when searching without feedback, highlighting the role of closed-loop sensory feedback.

The paper investigates tactile search behavior over the body using a tactile analog of the visual search task, finding serial search processes and frequency-dependent performance.

This study investigates how different tactile velocities affect functional connectivity in the brain using fMRI, finding velocity-specific patterns that may inform therapeutic strategies for stroke recovery.

The paper investigates how humans integrate tactile information over time, finding that they accumulate sensory evidence up to 600 ms of a 1800 ms stimulus, favoring a bounded accumulation model over independent sampling.

The paper investigates whether vision is necessary for categorical organization in the VOTC by comparing fMRI responses to sound categories in sighted and blind individuals.

This study shows that right insula damage affects the perception of pleasant touch, with posterior lesions reducing contralateral sensitivity and anterior lesions reducing ipsilateral sensitivity.

The paper investigates how visual experience influences the spatial representation of nociceptive inputs, finding that normally sighted individuals show altered perception when hands are crossed, suggesting a spatiotopic remapping, while early blind participants rely on somatotopic representation.

This study tests whether efference copy is necessary for somatosensory attenuation of self-generated touch, finding that voluntary movement, not passive movement, leads to reduced perceived intensity.

The paper quantifies somatosensory representation across the human cortex, showing that body-part proportions differ significantly from S1 and suggest a role in cognition.

This study investigates whether affective touch can enhance body ownership in patients with right hemisphere stroke by examining its impact on limb ownership and neural correlates.

The paper uses Bayesian population receptive field modeling to estimate somatosensory pRFs in human primary somatosensory cortex and finds larger representations for the index finger and larger pRF sizes for the little finger.

The paper shows that primate somatosensory cortex represents texture independently of scanning speed, enabling stable perception despite changes in sensory input.

The paper investigates how cerebellar connectivity with somatosensory areas correlates with the perception of self-generated touch attenuation in humans.

The paper shows that people can rapidly unlearn to reduce the intensity of self-generated touch and learn to reduce delayed touch after repeated exposure to a systematic delay.

The paper identifies topographic body maps in newborn macaques using fMRI, showing they are present at birth and refined over development, with no cross-modal plasticity in visually impaired monkeys.

The paper shows that whisker asymmetry in mice signals their behavioral state and motor preparation during a visual task.

This study compares how early blind and sighted individuals localize nociceptive stimuli under different spatial instructions, showing that visual experience affects spatial representation integration.

The paper shows that remapping in cerebral and cerebellar cortices after hand loss is not restricted by somatotopy, as multiple non-neighboring body parts are represented in the deprived hand region.

The paper investigates how social facial touch in rats modulates cortical activity, showing that both touch and partner sex influence neuron responses, with sex differences in network activity patterns.

This study demonstrates that intracortical microstimulation can convey texture information through active tactile exploration in monkeys, following Weber's law, suggesting potential for neuroprosthetic texture sensing.

This study shows that tactile enrichment in mice enhances functional columnar organization and improves sensory coding in layer 2/3 of the somatosensory cortex.