Time is of essence - Abnormal time perspectives mediate the impact of childhood trauma on depression severity

Trapped in time: Time perspective explains PTSD symptom severity following childhood abuse

BACKGROUND

Childhood abuse (CA) has profound impact on mental health, with survivors often exhibiting heightened vulnerability to posttraumatic stress disorder (PTSD). Time perspective-a psychological construct reflecting attitudes towards the past, present, and future-has emerged as a potential explanatory factor for PTSD symptoms; however, its role among CA survivors remains underexplored.

OBJECTIVE

This study investigated time perspective following CA and its contribution to explaining PTSD symptom clusters, beyond known risk factors such as age, polyvictimization, the role of the perpetrator in survivors' lives, and abuse severity.

PARTICIPANTS AND SETTING

The study included 977 Israeli women aged 18-70 years (M = 33.40, SD = 9.54), 80 % of whom reported a history of CA. Data were collected via an online survey.

METHODS

Participants completed measures assessing CA, time perspective, and PTSD symptoms. Non-parametric tests, correlation analyses, and regression models were utilized to explore the study's hypotheses.

RESULTS

CA survivors exhibited lower past-positive and future perspectives, higher past-negative and present-fatalistic perspectives, and greater deviations from balanced time perspective (all ps < .001, εH2 range = 0.02-0.29). Additionally, CA survivors exhibited a higher present-hedonistic perspective (p < .05, εH2 = 0.01). Time perspectives explained PTSD symptoms beyond the effects of age, polyvictimization, the role of the perpetrator in survivors' lives, and abuse severity, with varying effects across symptom clusters.

CONCLUSIONS

The findings underscore the impact of CA on time perspective and its contribution to PTSD symptomatology. Addressing maladaptive time perspectives through tailored interventions may enhance treatment outcomes for CA survivors.

Relationship between time perspective and depressive symptoms in young people working in high-altitude environments

BACKGROUND

Depression rates are significantly higher in high-altitude regions, making it important to understand its underlying mechanisms. Time perspective, which refers to how individuals perceive their past, present, and future, is closely linked to depression in low-altitude areas. However, its relationship with depression in high-altitude regions remains unclear.

METHODS

A cross-sectional survey was conducted with 4942 young male workers from high-altitude regions. The association between time perspectives and depressive symptoms were examined by univariate and multivariate analyses. Network analysis was employed to identify central symptoms and their interactions, and to compare the differences between individuals with and without depression.

RESULTS

The study identified that elevated past negative (PN), reduced past positive (PP), increased present fatalistic (PF) and present hedonistic (PH) orientations, and lower future (F) were significant risk factors for depressive symptoms in plateau populations. In the network structure of the depression group, PN, PF, PH, SDS18 "emptiness", and SDS13 "psychomotor agitation" were key elements influencing depressive symptoms and the strongest edge was F-PP. Significant differences were detected between the depressive and non-depressive groups, with the depressive group demonstrating significantly greater global strength invariance and a more robust network invariance.

CONCLUSIONS

Abnormal time perspectives, especially PN, PF and PH were strongly associated with depression in high-altitude environments, and the strong connection between F-PP provides a potential intervention target. Future research should further explore the causal relationship.

Connecting brain and mind through temporo-spatial dynamics: Towards a theory of common currency

Despite major progress in our understanding of the brain, the connection of neural and mental features, that is, brain and mind, remains yet elusive. In our 2020 target paper ("Is temporospatial dynamics the 'common currency' of brain and mind? Spatiotemporal Neuroscience") we proposed the "Common currency hypothesis": temporo-spatial dynamics are shared by neural and mental features, providing their connection. The current paper aims to further support and extend the original description of such common currency into a first outline of a "Common currency theory" (CCT) of neuro-mental relationship. First, we extend the range of examples to thoughts, meditation, depression and attention all lending support that temporal characteristics, (i.e. dynamics) are shared by both neural and mental features. Second, we now also show empirical examples of how spatial characteristics, i.e., topography, are shared by neural and mental features; this is illustrated by topographic reorganization of both neural and mental states in depression and meditation. Third, considering the neuro-mental connection in theoretical terms, we specify their relationship by distinct forms of temporospatial correspondences, ranging on a continuum from simple to complex. In conclusion, we extend our initial hypothesis about the key role of temporo-spatial dynamics in neuro-mental relationship into a first outline of an integrated mind-brain theory, the "Common currency theory" (CCT).

Longitudinal Associations between Future Time Perspective, Sleep Problems, and Depressive Symptoms among Chinese College Students: Between- and within-Person Effects

Depressive symptoms and sleep problems are extremely prevalent in adolescence, and future time perspective has been found to be strongly associated with them. However, little is known about the longitudinal relationship and the temporal dynamics of future time perspective, sleep problems, and depressive symptoms. Moreover, it is unclear whether sleep problems mediate the associations between future time perspective and depressive symptoms. To address this gap, a one-year longitudinal study was performed using data collected at three waves from 622 Chinese college students (aged 17-22 years, Mage = 18.16, SD = 1.49, 46.95% males). The results of cross-lagged panel models showed a bidirectional relationship between future time perspective and depressive symptoms, and that sleep problems were a mediating mechanism for these relationships. The results of random intercept cross-lagged panel models showed that at the within-person level, the change of sleep problems and depressive symptoms significantly affected the development of future time perspective, but the reverse effect not significant. Moreover, sleep problems mediated the within-person effect of depressive symptoms on future time perspective. These findings deepen the understanding of the longitudinal relationship between future time perspective, sleep problems and depressive symptoms, and emphasize the important role of sleep health in adolescent mental health and future development.

Scale for time and space experience in anxiety (STEA): Phenomenology and its clinical relevance

Anxiety is a pervasive emotional state where, phenomenologically, subjects often report changes in their experience of time and space. However, a systematic and quantified examination of time and space experience in terms of a self-report scale is still missing which eventually could also be used for clinical differential diagnosis. Based on historical phenomenological literature and patients' subjective reports, we here introduce, in a first step, the Scale for Time and Space Experience of Anxiety (STEA) in a smaller sample of 19 subjects with anxiety disorders and, in a second step, validate its shorter clinical version (cSTEA) in a larger sample of 48 anxiety subjects. The main findings are (i) high convergent and divergent validity of STEA with both Beck Anxiety Inventory (BAI) (r = 0.7325; p < 0.001) and Beck Depression Inventory (BDI) (r = 0.7749; p < 0.0001), as well as with spontaneous mind wandering (MWS) (r = 0.7343; p < 0.001) and deliberate mind wandering (MWD) (r = 0.1152; p > 0.05), (ii) statistical feature selection shows 8 key items for future clinical usage (cSTEA) focusing on the experience of temporal and spatial constriction, (iii) the effects of time and space experience (i.e., for both STEA and cSTEA scores) on the level of anxiety (BAI) are mediated by the degree of spontaneous mind wandering (MWS), (iv) cSTEA allows for differentiating high levels of anxiety from the severity of comorbid depressive symptoms, and (v) significant reduction in the cSTEA scores after a therapeutic intervention (breathing therapy). Together, our study introduces a novel fully quantified and highly valid self-report instrument, the STEA, for measuring time-space experiences in anxiety. Further we develop a shorter clinical version (cSTEA) which allows assessing time space experience in a valid, quick, and simple way for diagnosis, differential diagnosis, and therapeutic monitoring of anxiety.

Time matters for mental health: a systematic review of quantitative studies on time perspective in psychiatric populations

PURPOSE OF REVIEW

The ability to perform mental time travels and to develop representations of the past, the present, and the future is one of the distinctive capacities of the human mind. Despite its pronounced consequences for motivation, cognition, affect, and subjective well being, time perspective (TP) has been outside mainstream psychiatry and clinical psychology. We highlight the role of psychological-temporal phenomena in various disorders and summarize the current research on TP and psychopathology.

RECENT FINDINGS

Our review ultimately comprised 21 articles, including 18 unique datasets. It revealed that persons with different psychiatric diagnoses (attention defict hyperactivity disorder (ADHD), alcohol dependence, anxiety disorders, depression, bipolar disorder, personality disorders, posttraumatic stress disorder, schizophrenia) display different temporal profiles than control groups. We also found marked associations between temporal features and psychiatric symptom severity. The effects of specific TPs vary across different psychiatric diagnoses and to some extent between various age groups, with a consistent, widespread, and nonspecific effect of past-negative and less balanced, inflexible TP profile.

SUMMARY

Based on the review, TP biases are crucial factors in symptom development, while adaptive temporal profiles can serve as protective features against mental disorders. Understanding cognitive-temporal processes can enhance comprehension of psychopathological conditions and facilitate the development of temporality-focused clinical interventions.

The effect of the sense of Community on Depression, Anxiety, and Stress: the mediation role of a balanced time perspective

PURPOSE

Social context and time are two dimensions within which our entire existence is embedded. Therefore, prompting a positive set of attitudes and beliefs towards these elements is fundamental for individuals' psychological well-being. Currently, there is limited understanding regarding the interplay between the sense of community and time perspective in relation to psychological distress. The present study aims, at investigating the effects that the sense of community and time perspective have on the levels of anxiety, depression, and stress. Particular attention has been dedicated to testing whether the effect of sense of community on anxiety, depression, and stress is mediated by the deviation from a balanced time perspective.

METHODS

To accomplish our purposes, we asked 352 participants to complete an online survey and respond to the Depression, Anxiety, Stress Scale (DASS-21), the Zimbardo Time Perspective Inventory (ZTPI), and the Multi-Dimensional Sense of Community Scale (MTSOCS). From these scales, we obtained the scores for anxiety, depression, and stress as well as a general score for the sense of community and the deviation from a balanced time perspective. We computed three General Linear Mediation Models, one for each scale of the DASS-21.

RESULTS

The results showed that the relationship between sense of community and psychological distress was mediated by the deviation from a balanced time perspective extending previous findings and enriching the existing literature on time perspective.

CONCLUSION

The results described so far could be applied to build a series of interventions aimed at promoting psychological well-being in the general population. Considering our findings, we suggest that individuals' health could be promoted by both improving their sense of community, which in turn would decrease their levels of stress, and by restructuring their time perspective when it became dysfunctional and unbalanced.

Psychological predictors of the time perspective: The role of posttraumatic stress disorder, posttraumatic growth, and temporal triggers in a sample of bereaved adults

INTRODUCTION

The process of coping with loss and trauma is inextricably linked with subjective experiences and perceptions of time. The Time Perspective Framework, suggests that temporal frames influence an individual's actions, judgements, and the decisions that they make. Similarly, time perspective has been linked with psychosocial outcomes of trauma and loss (e.g. posttraumatic stress disorder). The aim of this study is to identify factors that may influence survivor's time perspective in order to determine if posttraumatic stress disorder (PTSD), posttraumatic growth (PTG), and temporal triggers (MIT) influenced different time perspective orientations.

METHODS

Data was collected via Qualtrics survey between July 2019 and July 2020. Measures included basic demographic characteristics, posttraumatic stress disorder checklist, posttraumatic growth inventory, an assessment of temporal triggers, and the Zimbardo time perspective inventory. A series of OLS regression analyses were estimated.

RESULTS

PTG was positively associated with future time perspective scores, whereas PTSD was associated with an increase in past negative orientation. The endorsement of temporal triggers like markers in time was negatively associated with present hedonistic scores and positively associated with future time perspective scores. Interestingly, PTSD, PTG and the endorsement of MIT were not associated with present time perspective scores.

DISCUSSION AND IMPLICATIONS

Identifying the relationship between PTSD, PTG, marker in time, and time perspective may offer important insights into treatment modalities that can improve outcomes for bereaved individuals. We discuss limitations of the current analysis and make recommendations for future research.

Overcoming the translational crisis of contemporary psychiatry - converging phenomenological and spatiotemporal psychopathology

Despite all neurobiological/neurocomputational progress in psychiatric research, recent authors speak about a 'crisis of contemporary psychiatry'. Some argue that we do not yet know the computational mechanisms underlying the psychopathological symptoms ('crisis of mechanism') while others diagnose a neglect of subjectivity, namely first-person experience ('crisis of subjectivity'). In this perspective, we propose that Phenomenological Psychopathology, due to its focus on first-person experience of space and time, is in an ideal position to address the crisis of subjectivity and, if extended to the brain's spatiotemporal topographic-dynamic structure as key focus of Spatiotemporal Psychopathology, the crisis of mechanism. We demonstrate how the first-person experiences of space and time differ between schizophrenia, mood disorders and anxiety disorders allowing for their differential-diagnosis - this addresses the crisis of subjectivity. Presupposing space and time as shared features of brain, experience, and symptoms as their "common currency", the structure of abnormal space and time experience may also serve as template for the structure of the brain's spatiotemporal neuro-computational mechanisms - this may address the crisis of mechanism. Preliminary scientific evidence in our examples of schizophrenia, bipolar disorder, anxiety disorder, and depression support such clinically relevant spatiotemporal determination of both first-person experience (crisis of subjectivity) and the brain's neuro-computational structure (crisis of mechanism). In conclusion, converging Phenomenological Psychopathology with Spatiotemporal Psychopathology might help to overcome the translational crisis in psychiatry by delineating more fine-grained neuro computational and -phenomenal mechanisms; this offers novel candidate biomarkers for diagnosis and therapy including both pharmacological and non-pharmacological treatment.

Mental Gravity: Depression as Spacetime Curvature of the Self, Mind, and Brain

The principle of mental gravity contends that the mind uses physical gravity as a mental model or simulacrum to express the relation between the inner self and the outer world in terms of "UP"-ness and "DOWN"-ness. The simulation of increased gravity characterises a continuum of mental gravity which states includes depression as the paradigmatic example of being down, low, heavy, and slow. The physics of gravity can also be used to model spacetime curvature in depression, particularly gravitational time dilation as a property of MG analogous to subjective time dilation (i.e., the slowing of temporal flow in conscious experience). The principle has profound implications for the Temporo-spatial Theory of Consciousness (TTC) with regard to temporo-spatial alignment that establishes a "world-brain relation" that is centred on embodiment and the socialisation of conscious states. The principle of mental gravity provides the TTC with a way to incorporate the structure of the world into the structure of the brain, conscious experience, and thought. In concert with other theories of cognitive and neurobiological spacetime, the TTC can also work towards the "common currency" approach that also potentially connects the TTC to predictive processing frameworks such as free energy, neuronal gauge theories, and active inference accounts of depression. It gives the up/down dimension of space, as defined by the gravitational field, a unique status that is connected to both our embodied interaction with the physical world, and also the inverse, reflective, emotional but still embodied experience of ourselves.

Characteristics of psychological time in patients with depression and potential intervention strategies

Psychological time reveals information about an individual's psychological state and psychopathological traits and, thus, has become a new perspective through which the occurrence and development of depression can be examined. Psychological time includes time perception, time perspective, circadian rhythms, and passage of time. Patients with depression are characterized by inaccurate time interval estimation, habitual negative thoughts about the past and future, evening-type circadian rhythms, and slow passage of time. Habitual negative thoughts about the past and future and evening-type circadian rhythms influence the formation of depression, and poor time interval estimation and slow passage of time may result from depression. Further study is needed accurately exploring psychological time and influencing factors in patients with depression, and prospective cohort studies could further clarify this complex relationship. In addition, the study of psychological time has important implications for developing effective interventions to reduce depression.

An Examination of Multidimensional Time Perspective and Mental Health Outcomes

We examined the associations between time perspective and mental health outcomes (N = 337; M_age = 22.74, SD_age = 5.59; 76% female). Time perspective included multiple dimensions (feelings, frequency, orientation, and relation) and time periods (past, present, and future). Mental health outcomes included depressive symptoms, anxiety, and rumination. To demonstrate the reliability of the time perspective scales, test-retest analyses were completed. Multivariate analyses showed that (a) positive feelings about time were associated with lower anxiety; (b) negative feelings about time were associated with greater anxiety; and (c) more frequent thoughts about the past were associated with greater depressive symptoms and anxiety. Associations remained when controlling for anxiety and depressive symptoms, respectively. Moreover, (a) positive feelings about time were associated with lower rumination; (b) negative feelings about time were associated with greater rumination; and (c) more frequent thoughts about the past were associated with greater rumination. Time perspective scales yielded scores that were moderate to high in test-retest reliability. Findings demonstrate the value of examining separate time perspective dimensions and time periods. Results highlight the role of time perspective in mental health interventions for adults.

Can disorders of subjective time inform the differential diagnosis of psychiatric disorders? A transdiagnostic taxonomy of time

AIM

Time is a core aspect of psychopathology with potential for clinical use and early intervention. Temporal experience, perception, judgement and processing are distorted in various psychiatric disorders such as mood (depression and mania), anxiety, autistic, impulse-control, dissociative and attention-deficit/hyperactivity disorders. Can these disorders of time be used as early diagnostic or predictive markers? To answer this question, we develop a Transdiagnostic Taxonomy of (disordered) Time (TTT) that maps on to the symptomatological, phenomenal, perceptual and functional descriptions of each underlying disorder in a 2 × 2 × 2 state space. Temporal distortions may precede functional decline, and so assist efforts at early detection and intervention in at-risk groups.

METHOD

Firstly, this article integrates a psychological model of how time is processed with a subjective or phenomenological model of how time is experienced or perceived. Secondly, the integrated combined model of time is then used to heuristically map major psychiatric disorders on to the basic elements of temporal flow and integration.

RESULTS

The TTT systematically describes the basic temporal nature of eight diagnostic categories of psychiatric illness. It differentiates between diagnoses primarily associated with distorted "macro-level" phenomenal temporal experiences (i.e. anxiety, dissociation/PTSD, depression, and mania) from those primarily related to distorted 'micro-level' temporal processing (i.e. psychotic, impulse-control, autistic and attention-deficit/hyperactivity disorders).

CONCLUSIONS

The TTT allows differential diagnostic classification of various psychiatric disorders in terms of a possible underlying time disorder, making it useful for future diagnostic and predictive purposes using novel techniques of temporal processing, time perception, passage of time, and time perspective.

Abnormal brain gray matter volume in patients with major depressive disorder: Associated with childhood trauma?

BACKGROUND

Patients with major depressive disorders (MDD) have abnormalities in the frontal-limbic structures of the brain. Childhood trauma is a risk factor for both structural brain alterations and MDD. However, the relationships among the three have not been confirmed.

METHODS

Sixty-four patients with MDD and sixty-one healthy controls (HC) were checked by using MRI, the Hamilton Depression Scale (HAMD) and Childhood Trauma Questionnaire (CTQ). Voxel-based morphometry (VBM) was used to compare gray matter volume (GMV) differences between the two groups. Moreover, partial correlation and mediation analyses were conducted to test for potential associations between CTQ scores, different GMV, and clinical variables.

RESULTS

Compared to the HC group, the MDD patients showed decreased GMV in the right middle frontal gyrus (rMFG) and right precentral gyrus (rPreCG). In the patient group, reduced GMV in rMFG was associated with CTQ scores (r = -0.30, P = 0.019) and HAMD scores (r = -0.53, P < 0.001). Finally, in the patient group, mediation analysis revealed that the indirect effect of rMFG GMV in CTQ scores and HAMD scores was 0.115 and the proportion of indirect effect to total effect was 23.86%.

LIMITATIONS

This study used a cross-sectional collection, and it is unclear whether at the longitudinal level the brain GMV mediates the relationship between childhood trauma and depression.

CONCLUSIONS

Abnormalities in the frontal GMV were presented in the MDD patients. It is possible that childhood traumatic experiences cause inefficient GMV and ultimately lead to an increased susceptibility to depression.

Emotions and sensory processing in adolescents: The effect of childhood traumatic experiences

Reportedly, maltreated children are more likely to have a mental illness, interpersonal violence, and other social behavior problems than those without trauma experience. However, there are few studies regarding childhood trauma and sensory processing relationship and the relationship is not clear until today. To verify the association between childhood trauma emotions and sensory processing in adolescents is the aim of this study. To gather traumatized adolescents, we conducted survey questionnaires from six alternative schools and one general high school in South Korea. A total of 260 students has answered the questions: trauma/parenting/school adaptation factors, childhood trauma, the difficulty of emotion regulation, positive and negative emotional measure, shortened self-control measure, and adolescent/adult sensory profile. We analyzed linear regression between childhood trauma and other emotions/sensory processing in total subjects and conducted group comparisons between general school and alternative school. With childhood trauma, negative emotion, emotion dysregulation, sensory profile including subscales showed positive correlations. A significant negative correlation was observed between the self-control scale and childhood trauma score. In group comparison results, trauma factors, primary caregiver, custody transfer, and school life adaptation factors were significantly higher in alternative school students (p < 0.002) while the parental relationship did not show a difference. Childhood trauma score, vision, and tactile were significantly higher in alternative school students. To summarize, our results present a direct effect of childhood trauma on sensory function in adolescents and was confirmed the importance of family environments in adolescents.

Ongoing Brain Activity and Its Role in Cognition: Dual versus Baseline Models

What is the role of the brain's ongoing activity for cognition? The predominant perspectives associate ongoing brain activity with resting state, the default-mode network (DMN), and internally oriented mentation. This triad is often contrasted with task states, non-DMN brain networks, and externally oriented mentation, together comprising a "dual model" of brain and cognition. In opposition to this duality, however, we propose that ongoing brain activity serves as a neuronal baseline; this builds upon Raichle's original search for the default mode of brain function that extended beyond the canonical default-mode brain regions. That entails what we refer to as the "baseline model." Akin to an internal biological clock for the rest of the organism, the ongoing brain activity may serve as an internal point of reference or standard by providing a shared neural code for the brain's rest as well as task states, including their associated cognition. Such shared neural code is manifest in the spatiotemporal organization of the brain's ongoing activity, including its global signal topography and dynamics like intrinsic neural timescales. We conclude that recent empirical evidence supports a baseline model over the dual model; the ongoing activity provides a global shared neural code that allows integrating the brain's rest and task states, its DMN and non-DMN, and internally and externally oriented cognition.