scholarly journals Tactile to visual number priming in the left intraparietal cortex of sighted Braille readers

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Katarzyna Rączy ◽  
Maria Czarnecka ◽  
Małgorzata Paplińska ◽  
Guido Hesselmann ◽  
André Knops ◽  
...  
Keyword(s):  
Cortical Region ◽  
Intraparietal Sulcus ◽  
Number Words ◽  
Magnitude Processing ◽  
Repetition Suppression ◽  
Sensory Modalities ◽  
Probe Distance ◽  
Arabic Digits ◽  
Left Parietal Cortex ◽  
Visual Number

Abstract Numbers can be presented in different notations and sensory modalities. It is currently debated to what extent these formats overlap onto a single representation. We asked whether such an overlap exists between symbolic numbers represented in two sensory modalities: Arabic digits and Braille numbers. A unique group of sighted Braille readers underwent extensive Braille reading training and was tested in an fMRI repetition-suppression paradigm with tactile Braille digit primes and visual Arabic digit targets. Our results reveal cross-modal priming: compared to repetition of two different quantities (e.g., Braille “5” and Arabic “2”), repetition of the same quantity presented in two modalities (e.g., Braille “5” and Arabic “5”) led to a reduction of activation in several sub-regions of the Intraparietal Sulcus (IPS), a key cortical region for magnitude processing. Thus, in sighted Braille readers, the representations of numbers read by sight and by touch overlap to a degree sufficient to cause repetition suppression. This effect was modulated by the numerical prime-probe distance. Altogether this indicates that the left parietal cortex hosts neural assemblies that are sensitive to numerical information from different notations (number words or Arabic digits) and modalities (tactile and visual).

scholarly journals The association between number magnitude and space is dependent on notation: Evidence from an adaptive perceptual orientation task

2019 ◽  
Vol 5 (1) ◽  
pp. 38-54
Author(s):  
Tianwei Gong ◽  
Baichen Li ◽  
Limei Teng ◽  
Zijun Zhou ◽  
Xuefei Gao ◽  
...  
Keyword(s):  
Judgment Task ◽  
Snarc Effect ◽  
Number Word ◽  
Reaction Time Difference ◽  
Number Words ◽  
Number Magnitude ◽  
Spatial Response ◽  
Orientation Task ◽  
Arabic Digits ◽  
Perceptual Orientation

Research on adults' numerical abilities suggests that number representations are spatially oriented. This association of numbers with spatial response is referred to as the SNARC (i.e., spatial–numerical association of response codes) effect. The notation-independence hypothesis of numeric processing predicts that the SNARC effect will not vary with notation (e.g., Arabic vs. number word). To test such assumption, the current study introduced an adaptive experimental procedure based on a simple perceptual orientation task that can automatically smooth out the mean reaction time difference between Arabic digits and traditional Chinese number. We found that the SNARC effect interacted with notation, showing a SNARC effect for Arabic digits, but not for verbal number words. The results of this study challenged the commonly held view that notation does not affect numerical processes associated with spatial representations. We introduced a parallel model to explain the notation-dependent SNARC effect in the perceptual orientation judgment task.

Orienting Attention in Time Activates Left Intraparietal Sulcus for Both Perceptual and Motor Task Goals

2011 ◽  
Vol 23 (11) ◽  
pp. 3318-3330 ◽  
Author(s):  
Karen Davranche ◽  
Bruno Nazarian ◽  
Franck Vidal ◽  
Jennifer Coull
Keyword(s):  
Parietal Cortex ◽  
Interaction Analysis ◽  
Target Identification ◽  
Motor Task ◽  
Intraparietal Sulcus ◽  
General Utility ◽  
Inferior Parietal Cortex ◽  
Psychophysiological Interaction ◽  
Left Parietal Cortex ◽  
Temporal Orienting

Attention can be directed not only toward a location in space but also to a moment in time (“temporal orienting”). Temporally informative cues allow subjects to predict when an imminent event will occur, thereby speeding responses to that event. In contrast to spatial orienting, temporal orienting preferentially activates left inferior parietal cortex. Yet, left parietal cortex is also implicated in selective motor attention, suggesting its activation during temporal orienting could merely reflect incidental engagement of preparatory motor processes. Using fMRI, we therefore examined whether temporal orienting would still activate left parietal cortex when the cued target required a difficult perceptual discrimination rather than a speeded motor response. Behaviorally, temporal orienting improved accuracy of target identification as well as speed of target detection, demonstrating the general utility of temporal cues. Crucially, temporal orienting selectively activated left inferior parietal cortex for both motor and perceptual versions of the task. Moreover, conjunction analysis formally revealed a region deep in left intraparietal sulcus (IPS) as common to both tasks, thereby identifying it as a core neural substrate for temporal orienting. Despite the context-independent nature of left IPS activation, complementary psychophysiological interaction analysis revealed how the functional connectivity of left IPS changed as a function of task context. Specifically, left IPS activity covaried with premotor activity during motor temporal orienting but with visual extrastriate activity during perceptual temporal orienting, thereby revealing a cooperative network that comprises both temporal orienting and task-specific processing nodes.

scholarly journals Jargon in reading aloud sparing Arabic digits but not number words

2015 ◽  
Vol 6 ◽  
Author(s):  
Semenza Carlo ◽  
Garzon Martina ◽  
Passarini Laura ◽  
Meneghello Francesca ◽  
Menichelli Alina
Keyword(s):  
Reading Aloud ◽  
Number Words ◽  
Arabic Digits

scholarly journals Asymmetries in the processing of Arabic digits and number words

2004 ◽  
Vol 32 (1) ◽  
pp. 164-171 ◽  
Author(s):  
Markus F. Damian
Keyword(s):  
Number Words ◽  
Arabic Digits

scholarly journals Eye Can See What You Want: Posterior Intraparietal Sulcus Encodes the Object of an Actor's Gaze

2011 ◽  
Vol 23 (11) ◽  
pp. 3400-3409 ◽  
Author(s):  
Richard Ramsey ◽  
Emily S. Cross ◽  
Antonia F. de C. Hamilton
Keyword(s):  
Action Observation ◽  
Spatial Location ◽  
Human Condition ◽  
Present Observation ◽  
Intraparietal Sulcus ◽  
Object Identity ◽  
Neural Basis ◽  
Social Orienting ◽  
Repetition Suppression ◽  
Action Observation Network

In a social setting, seeing Sally look at a clock means something different to seeing her gaze longingly at a slice of chocolate cake. In both cases, her eyes and face might be turned rightward, but the information conveyed is markedly different, depending on the object of her gaze. Numerous studies have examined brain systems underlying the perception of gaze direction, but less is known about the neural basis of perceiving gaze shifts to specific objects. During fMRI, participants observed an actor look toward one of two objects, each occupying a distinct location. Video stimuli were sequenced to obtain repetition suppression (RS) for object identity, independent of spatial location. In a control condition, a spotlight highlighted one of the objects, but no actor was present. Observation of the human actor's gaze compared with the spotlight engaged frontal, parietal, and temporal cortices, consistent with a broad action observation network. RS for gazed object in the human condition was found in posterior intraparietal sulcus (pIPS). RS for highlighted object in the spotlight condition was found in middle occipital, inferior temporal, medial fusiform gyri, and superior parietal lobule. These results suggest that human pIPS is specifically sensitive to the type object that an observed actor looks at (tool vs. food), irrespective of the observed actor's gaze location (left vs. right). A general attention or lower-level object feature processing mechanism cannot account for the findings because a very different response pattern was seen in the spotlight control condition. Our results suggest that, in addition to spatial orienting, human pIPS has an important role in object-centered social orienting.

Developmental bias for number words in the intraparietal sulcus

2016 ◽  
Vol 20 (3) ◽  
pp. e12385 ◽  
Author(s):  
Courtney A. Lussier ◽  
Jessica F. Cantlon
Keyword(s):  
Intraparietal Sulcus ◽  
Number Words

scholarly journals Arabic digits and spoken number words: Timing modulates the cross-modal numerical distance effect

2019 ◽  
Vol 72 (11) ◽  
pp. 2632-2646 ◽  
Author(s):  
Chia-Yuan Lin ◽  
Silke M Göbel
Keyword(s):  
Response Times ◽  
Distance Effect ◽  
Stimulus Presentation ◽  
Simultaneous Presentation ◽  
Matching Task ◽  
Numerical Distance ◽  
Physical Similarity ◽  
Number Words ◽  
Arabic Digits ◽  
The Cross

Moving seamlessly between spoken number words and Arabic digits is common in everyday life. In this study, we systematically investigated the correspondence between auditory number words and visual Arabic digits in adults. Auditory number words and visual Arabic digits were presented concurrently or sequentially and participants had to indicate whether they described the same quantity. We manipulated the stimulus onset asynchronies (SOAs) between the two stimuli (Experiment 1: −500 ms to +500 ms; Experiment 2: −200 ms to +200 ms). In both experiments, we found a significant cross-modal distance effect. This effect was strongest for simultaneous stimulus presentation and decreased with increasing SOAs. Numerical distance emerged as the most consistent significant predictor overall, in particular for simultaneous presentation. However, physical similarity between the stimuli was often a significant predictor of response times in addition to numerical distance, and at longer SOAs, physical similarity between the stimuli was the only significant predictor. This shows that SOA modulates the extent to which participants access quantity representations. Our results thus support the idea that a semantic quantity representation of auditory and visual numerical symbols is activated when participants perform a concurrent matching task, while at longer SOAs participants are more likely to rely on physical similarity between the stimuli. We also investigated whether individual differences in the efficiency of the cross-modal processing were related to differences in mathematical performance. Our results are inconclusive about whether the efficiency of cross-format numerical correspondence is related to mathematical competence in adults.

scholarly journals Pharmacological inactivation does not support a unique causal role for intraparietal sulcus in the discrimination of visual number

PLoS ONE ◽  
2017 ◽  
Vol 12 (12) ◽  
pp. e0188820 ◽  
Author(s):  
Nicholas K. DeWind ◽  
Jiyun Peng ◽  
Andrew Luo ◽  
Elizabeth M. Brannon ◽  
Michael L. Platt
Keyword(s):  
Causal Role ◽  
Intraparietal Sulcus ◽  
Visual Number

scholarly journals Measuring spontaneous and automatic processing of magnitude and parity information of Arabic digits by frequency-tagging EEG

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Mathieu Guillaume ◽  
Alexandre Poncin ◽  
Christine Schiltz ◽  
Amandine Van Rinsveld
Keyword(s):  
Semantic Information ◽  
Long Term Memory ◽  
Semantic Features ◽  
Daily Lives ◽  
Term Memory ◽  
Magnitude Processing ◽  
Brain Responses ◽  
Arabic Digits ◽  
Active Processing

AbstractArabic digits (1–9) are everywhere in our daily lives. These symbols convey various semantic information, and numerate adults can easily extract from them several numerical features such as magnitude and parity. Nonetheless, since most studies used active processing tasks to assess these properties, it remains unclear whether and to what degree the access to magnitude and especially to parity is automatic. Here we investigated with EEG whether spontaneous processing of magnitude or parity can be recorded in a frequency-tagging approach, in which participants are passively stimulated by fast visual sequences of Arabic digits. We assessed automatic magnitude processing by presenting a stream of frequent small digit numbers mixed with deviant large digits (and the reverse) with a sinusoidal contrast modulation at the frequency of 10 Hz. We used the same paradigm to investigate numerical parity processing, contrasting odd digits to even digits. We found significant brain responses at the frequency of the fluctuating change and its harmonics, recorded on electrodes encompassing right occipitoparietal regions, in both conditions. Our findings indicate that both magnitude and parity are spontaneously and unintentionally extracted from Arabic digits, which supports that they are salient semantic features deeply associated to digit symbols in long-term memory.

Sign in / Sign up

Export Citation Format

Share Document