Time as space vs. time as quantity in Spanish: a co-speech gesture study

There is a distinction between languages that use the duration is length metaphor, like English (e.g., long time), and languages like Spanish that conceptualise time using the duration is quantity metaphor (e.g., much time). The present study examines the use of both metaphors, exploring their multimodal behaviour in Spanish speakers. We analyse co-speech gesture patterns in the TV news setting, using data from the NewsScape Library, that co-occur with expressions that trigger the duration is quantity construal (e.g., durante todo ‘during the whole’) and the duration is length construal in the from X to Y construction (e.g., desde el principio hasta el final ‘from beginning to end’). Results show that both metaphors tend to co-occur with a semantic gesture, with a preference for the lateral axis, as reported in previous studies. However, our data also indicate that the direction of the gesture changes depending on the construal. The duration is quantity metaphor tends to be performed with gestures with an outwards direction, in contrast with the duration is length construal, which employ a left-to-right directionality. These differences in gesture realisation point to the existence of different construals for the concept of temporal duration.

Space-time Classification Index for Assessing COVID-19 Hotspots

Objectives: To develop new methods to address problems associated with use of traditional measures of disease surveillance, including prevalence and positivity rates. Methods: We use data from the public New York Times Github repository to develop a space-time classification index of COVID-19 hotspots. The Local Indicator of Spatial Association (LISA) statistic is applied to identify daily clusters of COVID-19 cases, from July 4th to July 19th. Results: The classification index is a spatial and temporal assessment tool that seeks to incorporate temporal trends of the clusters that are "high-high" and "high-low". Two classifications support the index: severity and temporal duration. We define severity as the number of times a county is statistically significant and temporal duration captures the number of consecutive days a county is a hotspot. Conclusions: The space-time classification index provides a statistically robust measure of the spatial patterns of COVID-19 hotspots. Spatial information is not captured through measures like the positivity rate, which merely divides the number of cases by tests conducted. The index proposed in this paper can guide intervention efforts by classifying counties with six-levels of importance.

A Corpus-Based Study on Construction of “Anger Adjectives + Prepositions” in World Englishes

Anger as one of the basic emotions has attracted much attention. In the construction of “Anger adjectives + prepositions”, the temporal duration of the Anger adjectives is closely related to their prepositional collocates. Differences in the use of the Anger adjectives and their prepositional collocates might be captured in the world English varieties. The corpora used in this study cover eight varieties of English. The five varieties of English used in Canada, Philippines, Singapore, India and Nigeria are from the International Corpus of English (ICE). The China English corpus (ChiE) consists of news texts crawled from six Chinese English media. American English is taken from the Corpus of Contemporary American English (COCA) and British English is taken from British National Corpus (BNC). By investigating the use of the Anger adjectives and their prepositional collocates in the eight varieties of English, this paper finds that, on the continuums of the temporal duration of Anger adjectives, most varieties of English are closer to American English, whereas only Singapore English is close to British English. The distribution of Anger adjectives in the English varieties is largely in accordance with the Concentric Circles of world Englishes whereas the continuums of the temporal duration of emotions present a new insight into their relations.

Articulatory coordination distinguishes complex segments from segment sequences

Phonological patterning motivates a distinction between complex segments and segment sequences, although it has also been suggested that there might be reliable phonetic differences. We develop the hypothesis that, in addition to their distinct phonological patterning, complex segments differ from segment sequences in how constituent articulatory gestures are coordinated in time. Through computational simulation, we illustrate predictions that follow from hypothesised coordination differences, showing as well how coordination is conceptually independent of temporal duration. We test predictions with kinematic data collected using electromagnetic articulography. Electromagnetic articulography data comparing labial-palatal gestures in Russian, which we argue on the basis of phonological facts to constitute complex segments, and similar labial-palatal gestures in English, which we argue constitute segment sequences, show distinct patterns of coordination, providing robust support for our main hypothesis. At least in this case, gestural coordination conditions patterns of kinematic variation that clearly distinguish complex segments from segment sequences.

Common and Distinct Roles of Frontal Midline Theta and Occipital Alpha Oscillations in Coding Temporal Intervals and Spatial Distances

Judging how far something is and how long it takes to get there is critical to memory and navigation. Yet, the neural codes for spatial and temporal information remain unclear, particularly the involvement of neural oscillations in maintaining such codes. To address these issues, we designed an immersive virtual reality environment containing teleporters that displace participants to a different location after entry. Upon exiting the teleporters, participants made judgments from two given options regarding either the distance they had traveled (spatial distance condition) or the duration they had spent inside the teleporters (temporal duration condition). We wirelessly recorded scalp EEG while participants navigated in the virtual environment by physically walking on an omnidirectional treadmill and traveling through teleporters. An exploratory analysis revealed significantly higher alpha and beta power for short-distance versus long-distance traversals, whereas the contrast also revealed significantly higher frontal midline delta–theta–alpha power and global beta power increases for short versus long temporal duration teleportation. Analyses of occipital alpha instantaneous frequencies revealed their sensitivity for both spatial distances and temporal durations, suggesting a novel and common mechanism for both spatial and temporal coding. We further examined the resolution of distance and temporal coding by classifying discretized distance bins and 250-msec time bins based on multivariate patterns of 2- to 30-Hz power spectra, finding evidence that oscillations code fine-scale time and distance information. Together, these findings support partially independent coding schemes for spatial and temporal information, suggesting that low-frequency oscillations play important roles in coding both space and time.

Lost in Time: Temporal Monitoring Elicits Clinical Decrements in Sustained Attention Post-Stroke

Objectives: Mental fatigue, ‘brain fog’, and difficulties maintaining engagement are commonly reported issues in a range of neurological and psychiatric conditions. Traditional sustained attention tasks commonly measure this capacity as the ability to detect target stimuli based on sensory features in the auditory or visual domains. However, with this approach, discrete target stimuli may exogenously capture attention to aid detection, thereby masking deficits in the ability to endogenously sustain attention over time. Methods: To address this, we developed the Continuous Temporal Expectancy Task (CTET) where individuals continuously monitor a stream of patterned stimuli alternating at a fixed temporal interval (690 ms) and detect an infrequently occurring target stimulus defined by a prolonged temporal duration (1020 ms or longer). As such, sensory properties of target and non-target stimuli are perceptually identical and differ only in temporal duration. Using the CTET, we assessed stroke survivors with unilateral right hemisphere damage (N = 14), a cohort in which sustained attention deficits have been extensively reported. Results: Stroke survivors had overall lower target detection accuracy compared with neurologically healthy age-matched older controls (N = 18). Critically, stroke survivors performance was characterised by significantly steeper within-block performance decrements, which occurred within short temporal windows (˜3 ½ min), and were restored by the break periods between blocks. Conclusions: These findings suggest that continuous temporal monitoring taxes sustained attention processes to capture clinical deficits in this capacity over time, and outline a precise measure of the endogenous processes hypothesised to underpin sustained attention deficits following right hemisphere stroke.

Flash Drought and Heat Waves: An Overview of Cascading and Compound Events

<p>Flash droughts and heat waves have substantial impacts on agriculture, socioeconomics, and human health. The combined influence of these two events exacerbate the damage to several sectors. The positive feedback between drought and heat waves has been previously studied, but the connection between flash drought and heat waves (or record temperatures) has only been investigated to occur roughly at the same temporal period. Further understanding the compound and cascading impacts of flash droughts and heat waves could potentially enhance monitoring and/or predictability of flash drought events benefiting subseasonal-to-seasonal forecasts, minimize human mortality, and prevent agricultural yield loss. We present a novel approach to analyzing compound and cascading impacts from the flash drought-heat wave relationship by investigating multiple case studies (e.g., 1950s drought event, 2011-2012 U.S. flash drought, and 2019 U.S. flash drought). Several reanalysis datasets were utilized to examine the intensity, temporal duration, and spatial extent relationships between flash drought and heat wave conditions during the case study events. We define heat waves using the following framework which incorporates classifications employed in previous studies; one classification is dependent on a relative threshold (i.e., 95<sup>th</sup> percentile) applied to daily maximum and minimum temperatures, whereas the second part of the definition utilizes heat index under the same relative threshold. In order for a heat wave event to begin, this definition must hold true for three or more consecutive days for a specified spatial method. Our flash drought analysis incorporated a percentile methodology based on standardized evapotranspiration stress ratio (SESR). Comparison between intensity, spatial extent, and temporal duration relationships for compound and cascading events were of particular focus for this study. A mixture of compound and cascading events were found within one flash drought study (i.e., 2011-2012 flash drought). As such, we further hypothesize that the intensity and temporal duration will differ between compound and cascading events. Yet, we expect the spatial extent to remain positively correlated as shown from previous studies.</p>

Ex Uno Fonte Multi Rivuli?

This chapter addresses the range of aspects and multiple strands through which Hellenistic biography developed in its spatio-temporal duration of almost three centuries. This extended period witnessed the use and—often in-depth—redevelopment of previous models and methods that, in one way or another, influenced different authors at different moments. Acknowledging these ramifications is not tantamount to claiming, a fortiori, that they may all be traced back to a single model or that they are rooted in the work of Aristotle and the Peripatetic tradition. Rather, it seems more likely that Hellenistic biography drew upon a range of distinct models, albeit often only embryonic or not fully defined ones. Individual Hellenistic authors developed those elements or ideas which they found most congenial to themselves or promising, often with very different aims and purposes. Starting from these reinterpretations, they came up with substantial and original redefinitions of the biographical genre, codifying certain aspects which were then transmitted to subsequent generations as established features.

Lost in time: temporal monitoring elicits clinical decrements in sustained attention post-stroke

Mental fatigue, ‘brain fog’ and difficulties maintaining engagement are commonly reported issues in a wide range of neurological and psychiatric conditions. These compromise the ability to effectively engage with rehabilitative intervention and limit plasticity processes necessary for optimal recovery.Traditional sustained attention tasks commonly measure this capacity as the ability to detect target stimuli based on sensory features in the auditory and visual domains. However, with this approach, discrete sudden onset target stimuli may exogenously capture attention and/or result in automatic stimulus-response mappings to aid target detection, thereby masking deficits in the ability to endogenously sustain attention over time. We have developed a sustained attention test (the continuous temporal expectancy test; CTET) which requires individuals to continuously monitor a stream of patterned stimuli alternating at a fixed temporal interval (690ms) and detect an infrequently occurring target stimulus defined by a prolonged temporal duration (1020ms or longer). Because sensory properties of target and non-target stimuli are perceptually identical and differ only in temporal duration, the CTET taxes continuous monitoring processes which are critical for sustaining attention.Here, using the CTET we assessed stroke survivors with unilateral right hemisphere damage (N=14), a cohort in which sustained attention deficits have been extensively reported. The right hemisphere stroke survivors had overall lower target detection accuracy on the CTET compared to neurologically-healthy age-matched older controls (N=18). In addition, performance of the stroke survivors was characterised by significantly steeper within-block performance decrements in target detection accuracy compared with controls. These decrements occurred within short temporal windows (∼3 ½ minutes) and were restored by the break periods between blocks.These findings outline a precise measure of the endogenous processes hypothesized to underpin deficits of sustained attention following right hemisphere stroke and suggest that continuous temporal monitoring may be a particularly sensitive way to capture clinical deficits in the capacity to sustain attention over time.