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Time perception in the range of milliseconds to a few seconds is essential for many important sensory and perceptual tasks including speech perception, motion perception, motor coordination, and cross-modal interaction. For the brain to be in synchrony with the environment, the physical differences in the speeds of light and sound, as well as stimuli from other modalities such as odors, must be processed and coordinated (Pöppel & Bao 2014; Bao et al., 2015). Time is a subjective feeling that is modulated by emotional states which trigger temporal distortions (temporal dilation vs. contraction) (Wittmann et al., 2014), hence give rise to subjective time that may be different to event time as initially registered in the brain. Recent research suggests that time perception in a multisensory world is subject to prior task experience and shaped by (statistical) learning processes. Humans are active learners. That is, the engagement of the own body in a timing task within a perceptual-action loop will make a noticeable difference in timing performance, as compared to when humans only passively perceive the same perceptual scenario (Bao et al., 2015; Chen & Vroomen, 2013). This Research Topic of “Sub-and Supra-Second Timing: Brain, Learning and Development” has integrated sixteen submissions of novel research on sub- and supra-timing. We have categorized the papers in this topic into the following four themes, from which we can deduce trends of research about multisensory timing in the sub- and supra-second range:Sensory timing, interaction and reliabilityAdaptive representation of time, learning and temporal predictionSensorimotor synchronization, embodiment and coordinationPerspective of psychological moment and temporal organizationOverall, the collections in “Sub-and Supra-Second Timing: Brain, Learning and Development” show some recent trends and debates in multisensory timing research as well as provide a venue to inspire future work in multisensory timing.

Subjective time --- Time Perception --- time coordination --- movement timing --- timing mechanisms

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Researchers working in many fields of psychology and neuroscience are interested in the temporal structure of experience, as well as the experience of time, at scales of a few milliseconds up to a few seconds as well as days, months, years, and beyond. This Research Topic supposes that broadly speaking, the field of "time psychology" can be organized by distinguishing between "perceptual" and "conceptual" time-scales. Dealing with conceptual time: "mental time travel," also called mental simulation, self-projection, episodic-semantic memory, prospection/foresight, allows humans (and perhaps other animals) to imagine and plan events and experiences in their personal futures, based in large part on memories of their personal pasts, as well as general knowledge. Moreover, contents of human language and thought are fundamentally organized by a temporal dimension, enmeshed with it so thoroughly that it is usually expressible only through spatial metaphors. But what might such notions have to do with experienced durations of events lasting milliseconds up to a few seconds, during the so-called "present moment" of perception-action cycle time? This Research Topic is organized around the general premise that, by considering how mental time travel might "scale down" to time perception (and vice-versa, no less), progress and integrative synthesis within- and across- scientific domains might be facilitated. Bipolar configurations of future- and past-orientations of the self may be repeated in parallel across conceptual and perceptual time-scales, subsumed by a general "Janus-like" feedforward-feedback system for goal-pursuit. As an example, it is notable that the duality of "prospection" and semantic-episodic memory operating at conceptual time-scales has an analogue in perception-action cycle time, namely the interplay of anticipatory attention and working memory. Authors from all areas of psychology and neuroscience are encouraged to submit articles of any format accepted by the journal (Original Research, Methods, Hypothesis & Theory, Reviews, etc.), which might speak to questions about time and temporal phenomena at long and/or short time-scales.

Time Perception --- Attention --- Consciousness --- episodic memory --- prospection --- working memory --- mental time travel --- mind wandering

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One fundamental topic of scientific inquiry in psychology is the study of what William James called the 'stream of consciousness', our ongoing experience of the world and ourselves from within—our inner experiences. These internal states (aka "stimulus-independent thoughts") include inner speech, mental imagery, feelings, sensory awareness, internally produced sounds or music, unsymbolized thinking, and mentalizing (thinking about others' mental states). They may occur automatically during mind-wandering (daydreaming) and resting-state episodes, and may focus on one's past, present, or future ("mental time travel" - e.g., autonoetic consciousness). Inner experiences also may take the form of intrusive or ruminative thoughts. The types, characteristics, frequency, content, and functions of inner experiences have been studied using a variety of traditional methods, among which questionnaires, thought listing procedures (i.e., open-ended self-reports), thinking aloud techniques, and daily dairies. Another approach, articulatory suppression, consists in blocking participants' use of verbal thinking while completing a given task; deficits indicate that inner speech plays a causal role in normal task completion. Various thought sampling approaches have also been developed in an effort to gather more ecologically valid data. Previous thought sampling studies have relied on beepers that signal participants to report aspects of their inner experiences at random intervals. More recent studies are exploiting smartphone technology to easily and reliably probe randomly occurring inner experiences in large samples of participants. These various measures have allowed researchers to learn some fundamental facts about inner experiences. To illustrate, it is becoming increasingly clear that prospection (future-oriented thinking) greatly depends on access to autobiographical memory (past-oriented thinking), where recollection of past scenes is used as a template to formulate plausible future scenarios. The main goal of the present Research Topic was to offer a scientific platform for the dissemination of current high-quality research pertaining to inner experiences. Although data on all forms of inner experiences were welcome, reports on recent advances in inner speech research were particularly encouraged. Here are some examples of topics of interest: (1) description and validation of new scales, inventories, questionnaires measuring any form of inner experience; (2) novel uses or improvements of existing measures of inner experiences; (3) development of new smartphone technology facilitating or broadening the use of cell phones to sample inner experiences; (4) frequency, content, and functions of various inner experience; (5) correlations between personality or cognitive variables and any aspects of inner experiences; (6) philosophical or theoretical considerations pertaining to inner experiences; and (7) inner experience changes with age.

resting state --- mind wandering --- inner speech --- unsymbolized thinking --- autobiography --- self-consciousness --- Time Perception --- fMRI --- Thought sampling --- Self-report scales

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Mental chronometry encompasses all aspects of time processing in the nervous system and constitutes a standard tool in many disciplines including theoretical and experimental psychology and human neuroscience. Mental chronometry has represented a fundamental approach to elucidate the time course of many cognitive phenomena and their underlying neural circuits over more than a century. Nowadays, mental chronometry continues evolving and expanding our knowledge, and our understanding of the temporal organization of the brain in combination with different neuroscience techniques and advanced methods in mathematical analysis. In research on mental chronometry, human reaction/responses times play a central role. Together with reaction times, other topics in mental chronometry include vocal, manual and saccadic latencies, subjective time, psychological time, interval timing, time perception, internal clock, time production, time representation, time discrimination, time illusion, temporal summation, temporal integration, temporal judgment, redundant signals effect, perceptual, decision and motor time, etc. The aim of this research topic is to provide an overview of the state of the art in this field?its relevance, recent findings, current challenges, perspectives and future directions. Thus, as a result, a collection of 14 original research and opinion papers from different experts have been gathered together in a single volume.

mental chronometry --- Simple and choice reaction time --- Timing and Time perception --- Sensory Perception --- Cognition --- human performance --- variability --- power laws --- stochastic models --- Decision Making