scholarly journals Memory encoding of syntactic information involves domain-general attentional resources: Evidence from dual-task studies

2018 ◽  
Vol 72 (6) ◽  
pp. 1285-1296
Author(s):  
Evelien Heyselaar ◽  
Katrien Segaert
Keyword(s):  
Dual Task ◽  
Memory Retrieval ◽  
Syntactic Structure ◽  
Target Sentence ◽  
Syntactic Processing ◽  
Memory Encoding ◽  
Single Task ◽  
Attentional Resources ◽  
Syntactic Information ◽  
Information Domain

We investigate the type of attention (domain-general or language-specific) used during syntactic processing. We focus on syntactic priming: In this task, participants listen to a sentence that describes a picture (prime sentence), followed by a picture the participants need to describe (target sentence). We measure the proportion of times participants use the syntactic structure they heard in the prime sentence to describe the current target sentence as a measure of syntactic processing. Participants simultaneously conducted a motion-object tracking (MOT) task, a task commonly used to tax domain-general attentional resources. We manipulated the number of objects the participant had to track; we thus measured participants’ ability to process syntax while their attention is not taxed, slightly taxed, or overly taxed. Performance in the MOT task was significantly worse when conducted as a dual task compared with as a single task. We observed an inverted U-shaped curve on priming magnitude when conducting the MOT task concurrently with prime sentences (i.e., memory encoding), but no effect when conducted with target sentences (i.e., memory retrieval). Our results illustrate how, during the encoding of syntactic information, domain-general attention differentially affects syntactic processing, whereas during the retrieval of syntactic information, domain-general attention does not influence syntactic processing.

scholarly journals Memory encoding of syntactic information involves domain-general attentional resources. Evidence from dual-task studies

2018 ◽  
Author(s):  
Evelien Heyselaar ◽  
Katrien Segaert
Keyword(s):  
Dual Task ◽  
Memory Retrieval ◽  
Syntactic Structure ◽  
Target Sentence ◽  
Syntactic Processing ◽  
Memory Encoding ◽  
Single Task ◽  
Attentional Resources ◽  
Syntactic Information ◽  
Information Domain

AbstractWe investigate the type of attention (domain-general or language-specific) used during syntactic processing. We focus on syntactic priming: In this task, participants listen to a sentence that describes a picture (prime sentence), followed by a picture the participants need to describe (target sentence). We measure the proportion of times participants use the syntactic structure they heard in the prime sentence to describe the current target sentence as a measure of syntactic processing. Participants simultaneously conducted a motion-object tracking (MOT) task, a task commonly used to tax domain-general attentional resources. We manipulated the number of objects the participant had to track; we thus measured participants’ ability to process syntax while their attention is not-, slightly-, or overly-taxed. Performance in the MOT task was significantly worse when conducted as a dual-task compared to as a single task. We observed an inverted U-shaped curve on priming magnitude when conducting the MOT task concurrently with prime sentences (i.e., memory encoding), but no effect when conducted with target sentences (i.e., memory retrieval). Our results illustrate how, during the encoding of syntactic information, domain-general attention differentially affects syntactic processing, whereas during the retrieval of syntactic information domain-general attention does not influence syntactic processing.

scholarly journals Delving Into the Working Mechanism of Prediction in Sentence Comprehension: An ERP Study

2021 ◽  
Vol 12 ◽  
Author(s):  
Yunlong Huang ◽  
Minghu Jiang ◽  
Qian Guo ◽  
Yuling Wang
Keyword(s):  
Cognitive Processing ◽  
Memory Retrieval ◽  
Sentence Comprehension ◽  
Underlying Mechanism ◽  
Syntactic Processing ◽  
Working Mechanism ◽  
Late Positivity ◽  
N400 Amplitude ◽  
Syntactic Information ◽  
First Time

The present study aims to delineate the working mechanism of prediction in sentence comprehension, by disentangling the influence of the facilitated general memory retrieval from the coexistent influence of the predicted language-specific semantic and/or syntactic information for the first time. The results support that prediction might influence the downstream cognitive processing in two aspects: (1) the pre-activated information facilitates the retrieval of a matched input in memory and, (2) the pre-activated information interacts with higher-level semantic/syntactic processing. More importantly, the present findings suggest that these two types of influences seem to occur at different stages of sentence comprehension: the facilitated memory retrieval of the input modulates N400 amplitude and the latency of post-N400 late central-parietal positivity/P600, while the predicted semantic/syntactic information and/or their interactions modulate the amplitude of the late positivity. The present findings would be helpful for interpreting the underlying mechanism of observed effects in prediction studies.

Vision and Haptics Share Spatial Attentional Resources and Visuotactile Integration Is Not Affected by High Attentional Load

2015 ◽  
Vol 28 (3-4) ◽  
pp. 371-392 ◽  
Author(s):  
Basil Wahn ◽  
Basil Wahn ◽  
Peter König
Keyword(s):  
Dual Task ◽  
Spatial Information ◽  
Sensory Modality ◽  
Human Information Processing ◽  
Visual Modality ◽  
Task Condition ◽  
Dual Task Condition ◽  
Single Task ◽  
Attentional Resources ◽  
Attentional Load

Human information processing is limited by attentional resources. Two questions that are discussed in multisensory research are (1) whether there are separate spatial attentional resources for each sensory modality and (2) whether multisensory integration is influenced by attentional load. We investigated these questions using a dual task paradigm: Participants performed two spatial tasks (a multiple object tracking [‘MOT’] task and a localization [‘LOC’] task) either separately (single task condition) or simultaneously (dual task condition). In the MOT task, participants visually tracked a small subset of several randomly moving objects. In the LOC task, participants either received visual, tactile, or redundant visual and tactile location cues. In the dual task condition, we found a substantial decrease in participants’ performance and an increase in participants’ mental effort (indicated by an increase in pupil size) relative to the single task condition. Importantly, participants performed equally well in the dual task condition regardless of whether they received visual, tactile, or redundant multisensory (visual and tactile) location cues in the LOC task. This result suggests that having spatial information coming from different modalities does not facilitate performance, thereby indicating shared spatial attentional resources for the tactile and visual modality. Also, we found that participants integrated redundant multisensory information optimally even when they experienced additional attentional load in the dual task condition. Overall, findings suggest that (1) spatial attentional resources for the tactile and visual modality overlap and that (2) the integration of spatial cues from these two modalities occurs at an early pre-attentive processing stage.

scholarly journals Syntactic representations in the human brain: beyond effort-based metrics

2020 ◽  
Author(s):  
Aniketh Janardhan Reddy ◽  
Leila Wehbe
Keyword(s):  
Language Processing ◽  
Syntactic Structure ◽  
Brain Activity ◽  
Brain Regions ◽  
Syntactic Processing ◽  
Language System ◽  
Language Studies ◽  
Syntactic Information ◽  
Show Evidence ◽  
The Brain

AbstractWe are far from having a complete mechanistic understanding of the brain computations involved in language processing and of the role that syntax plays in those computations. Most language studies do not computationally model syntactic structure, and most studies that do model syntactic processing use effort-based metrics. These metrics capture the effort needed to process the syntactic information given by every word [9, 10, 25]. They can reveal where in the brain syntactic processing occurs, but not what features of syntax are processed by different brain regions. Here, we move beyond effort-based metrics and propose explicit features capturing the syntactic structure that is incrementally built while a sentence is being read. Using these features and functional Magnetic Resonance Imaging (fMRI) recordings of participants reading a natural text, we study the brain representation of syntax. We find that our syntactic structure-based features are better than effort-based metrics at predicting brain activity in various parts of the language system. We show evidence of the brain representation of complex syntactic information such as phrase and clause structures. We see that regions well-predicted by syntactic features are distributed in the language system and are not distinguishable from those processing semantics. Our results call for a shift in the approach used for studying syntactic processing.

scholarly journals Understanding the dual-task costs of walking: a StartReact study

2020 ◽  
Vol 238 (5) ◽  
pp. 1359-1364
Author(s):  
Jorik Nonnekes ◽  
Valeria Dibilio ◽  
Claudia Barthel ◽  
Teodoro Solis-Escalante ◽  
Bastiaan R. Bloem ◽  
...  
Keyword(s):  
Dual Task ◽  
Acoustic Stimulus ◽  
Reaction Times ◽  
Single Task ◽  
Response Initiation ◽  
Attentional Resources ◽  
Startling Acoustic Stimulus ◽  
Flexor Digitorum ◽  
Extensor Carpi Radialis ◽  
Startling Stimulus

Abstract The need to perform multiple tasks more or less simultaneously is a common occurrence during walking in daily life. Performing tasks simultaneously typically impacts task performance negatively. Hypothetically, such dual-task costs may be explained by a lowered state of preparation due to competition for attentional resources, or alternatively, by a ‘bottleneck’ in response initiation. Here, we investigated both hypotheses by comparing ‘StartReact’ effects during a manual squeezing task under single-task (when seated) and dual-task (when walking) conditions. StartReact is the acceleration of reaction times by a startling stimulation (a startling acoustic stimulus was applied in 25% of trials), attributed to the startling stimulus directly releasing a pre-prepared movement. If dual-task costs are due to a lowered state of preparation, we expected trials both with and without an accompanying startling stimulus to be delayed compared to the single-task condition, whereas we expected only trials without a startling stimulus to be delayed if a bottleneck in response initiation would underlie dual-task costs. Reaction times of the manual squeezing task in the flexor digitorum superficialis and extensor carpi radialis muscle were significantly delayed (approx. 20 ms) when walking compared to the seated position. A startling acoustic stimulus significantly decreased reaction times of the squeezing task (approx. 60 ms) both when walking and sitting. Dual-task costs during walking are, therefore, likely the result of lowered task preparation because of competition for attentional resources.

Syntactic ambiguity resolution and revision processes in complement sentences

2020 ◽  
Author(s):  
Hiroki Fujita
Keyword(s):  
Sentence Processing ◽  
Syntactic Structure ◽  
Syntactic Processing ◽  
Current Evidence ◽  
Syntactic Ambiguity ◽  
Garden Path ◽  
Correct Analysis ◽  
Syntactic Information ◽  
Contradictory Evidence ◽  
Processing Heuristic

Temporarily ambiguous sentences are sometimes misanalysed and require revision during sentence processing. Previous studies have reported that non-syntactic information such as verb subcategorisation information does not always prevent misanalysis. However, there is contradictory evidence about whether non-syntactic information is immediately used to recover the globally correct analysis. Previous studies have also reported that initially assigned misinterpretations linger after disambiguation. Some recent studies have suggested that this lingering misinterpretation does not result from a failure to conduct syntactic revision. However, the current evidence for syntactic revision is scarce, limited to a syntactic structure and eye-movement while reading task, and crucially does not necessarily prove that syntactic revision is successfully conducted. The present study reports three self-paced reading experiments that investigate these issues, using temporarily ambiguous complement sentences. Experiment 1 showed that temporarily ambiguous complement sentences are misanalysed during sentence processing, which subsequently causes garden-path effects and lingering misinterpretation. Experiment 2 suggested that non-syntactic information is immediately used to recover the globally correct analysis. However, there was an indication that the incorrect analysis remains activated. Experiment 3 revealed that syntactic revision is conducted in complement sentences without regressive eye movements. The present study argues that the good-enough account can explain these results if this account assumes that a syntactic processing heuristic such as the Canonical Sentoid Strategy is used during the processing of temporarily ambiguous complement sentences.

scholarly journals ENERGY OPTIMIZATION DURING WALKING CAN BE A PRIMARILY IMPLICIT PROCESS

2020 ◽  
Author(s):  
Megan J. McAllister ◽  
Rachel L. Blair ◽  
J. Maxwell Donelan ◽  
Jessica C. Selinger
Keyword(s):  
Dual Task ◽  
Secondary Task ◽  
Discrimination Task ◽  
Energy Optimization ◽  
Step Frequency ◽  
Single Task ◽  
Attentional Resources ◽  
Optimization Task ◽  
Tone Discrimination ◽  
Explicit Process

AbstractGait adaptations, in response to novel environments, devices or changes to the body, can be driven by the continuous optimization of energy expenditure. However, whether energy optimization is primarily an implicit process—occurring automatically and with minimal cognitive attention—or an explicit process—occurring as a result of a conscious, attention-demanding, strategy—remains unclear. Here, we use a dual-task paradigm to test whether energy optimization during walking is primarily an implicit or explicit process. To create our primary energy optimization task, we used lower-limb exoskeletons to shift people’s energetically optimal step frequency to frequencies lower than normally preferred. Our secondary task, designed to draw explicit attention from the optimization task, was an auditory tone discrimination task. We found that adding this secondary task did not disrupt energy optimization during walking; participants in our dual-task experiment adapted their step frequency toward the optima by an amount similar to participants in our previous single-task experiment. We also found that performance on the tone discrimination task did not worsen when participants were optimizing for energetic cost; accuracy scores and reaction times remained unchanged when the exoskeleton altered the energy optimal gaits. Survey responses suggest that dual-task participants were largely unaware of the changes they made to their gait to optimize energy, whereas single-task participants were more aware of their gait changes yet did not leverage this explicit awareness to improve gait optimization. Collectively, our results suggest that energy optimization is primarily an implicit process, allowing attentional resources to be directed toward other cognitive and motor objectives during walking.Summary statementPeople can adapt to energy optimal walking patterns without being consciously aware they are doing so. This allows people to discover energetically efficient gaits while preserving attentional resources for other tasks.

Effects of Concurrent Manual Task Performance on Connected Speech Acoustics in Individuals With Parkinson Disease

2019 ◽  
Vol 62 (7) ◽  
pp. 2099-2117 ◽  
Author(s):  
Jason A. Whitfield ◽  
Zoe Kriegel ◽  
Adam M. Fullenkamp ◽  
Daryush D. Mehta
Keyword(s):  
Task Performance ◽  
Speech Production ◽  
Dual Task ◽  
Motor Task ◽  
Task Condition ◽  
Connected Speech ◽  
Speech Acoustics ◽  
Single Task ◽  
Manual Task ◽  
Task Conditions

Purpose Prior investigations suggest that simultaneous performance of more than 1 motor-oriented task may exacerbate speech motor deficits in individuals with Parkinson disease (PD). The purpose of the current investigation was to examine the extent to which performing a low-demand manual task affected the connected speech in individuals with and without PD. Method Individuals with PD and neurologically healthy controls performed speech tasks (reading and extemporaneous speech tasks) and an oscillatory manual task (a counterclockwise circle-drawing task) in isolation (single-task condition) and concurrently (dual-task condition). Results Relative to speech task performance, no changes in speech acoustics were observed for either group when the low-demand motor task was performed with the concurrent reading tasks. Speakers with PD exhibited a significant decrease in pause duration between the single-task (speech only) and dual-task conditions for the extemporaneous speech task, whereas control participants did not exhibit changes in any speech production variable between the single- and dual-task conditions. Conclusions Overall, there were little to no changes in speech production when a low-demand oscillatory motor task was performed with concurrent reading. For the extemporaneous task, however, individuals with PD exhibited significant changes when the speech and manual tasks were performed concurrently, a pattern that was not observed for control speakers. Supplemental Material https://doi.org/10.23641/asha.8637008

THE RELIABILITY OF CLINICAL BALANCE TESTS UNDER SINGLE-TASK AND DUAL-TASK TESTING PARADIGMS IN UNINJURED ACTIVE YOUTH AND YOUNG ADULTS

2020 ◽  
Vol 15 (4) ◽  
pp. 487-500
Author(s):  
Thaer S. Manaseer ◽  
Jackie L. Whittaker ◽  
Codi Isaac ◽  
Kathryn Schneider ◽  
Mary Roduta Roberts ◽  
...  
Keyword(s):  
Young Adults ◽  
Dual Task ◽  
Single Task ◽  
Balance Tests ◽  
Youth And Young Adults

scholarly journals Linking the Rapid Cascade of Visuo-Attentional Processes to Successful Memory Encoding

2020 ◽  
Author(s):  
B R Geib ◽  
R Cabeza ◽  
M G Woldorff
Keyword(s):  
Visual Processing ◽  
Memory Retrieval ◽  
Current Knowledge ◽  
High Temporal Resolution ◽  
Alpha Power ◽  
Attentional Orienting ◽  
Memory Encoding ◽  
Attentional Processes ◽  
Neural Processes ◽  
Dm Effect

Abstract While it is broadly accepted that attention modulates memory, the contribution of specific rapid attentional processes to successful encoding is largely unknown. To investigate this issue, we leveraged the high temporal resolution of electroencephalographic recordings to directly link a cascade of visuo-attentional neural processes to successful encoding: namely (1) the N2pc (peaking ~200 ms), which reflects stimulus-specific attentional orienting and allocation, (2) the sustained posterior-contralateral negativity (post-N2pc), which has been associated with sustained visual processing, (3) the contralateral reduction in oscillatory alpha power (contralateral reduction in alpha > 200 ms), which has also been independently related to attentionally sustained visual processing. Each of these visuo-attentional processes was robustly predictive of successful encoding, and, moreover, each enhanced memory independently of the classic, longer-latency, conceptually related, difference-due-to memory (Dm) effect. Early latency midfrontal theta power also promoted successful encoding, with at least part of this influence being mediated by the later latency Dm effect. These findings markedly expand current knowledge by helping to elucidate the intimate relationship between attentional modulations of perceptual processing and effective encoding for later memory retrieval.

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