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Rodrigues da Silva PH, Leffa DT, Luethi MS, Silva RF, Ferrazza CP, Picon FA, Grevet EH, Bau CHD, Rovaris DL, Razza LB, Caumo W, Camprodon JA, Rohde LAP, Brunoni AR. Baseline brain volume predicts home-based transcranial direct current stimulation effects on inattention in adults with attention-deficit/hyperactivity disorder. J Psychiatr Res 2024; 177:403-411. [PMID: 39089118 DOI: 10.1016/j.jpsychires.2024.07.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 07/22/2024] [Accepted: 07/27/2024] [Indexed: 08/03/2024]
Abstract
BACKGROUND Home-based transcranial direct current stimulation (Hb-tDCS) is a non-invasive brain stimulation technique that utilizes low-intensity electric currents delivered via scalp electrodes to modulate brain activity. It holds significant promise for addressing inattention in adults with attention-deficit/hyperactivity disorder (ADHD). However, its effectiveness varies among individuals, and predicting outcomes remains uncertain, partially due to the influence of individual differences in ADHD-related brain anatomy. METHODS We analyzed data from a subsample, composed by twenty-nine adult patients with ADHD, of the Treatment of Inattention Symptoms in Adult Patients with ADHD (TUNED) trial. Fourteen patients underwent active anodal right cathodal left dorsolateral prefrontal cortex (DLPFC) Hb-tDCS for 4 weeks and fifteen received sham-related tDCS intervention. Inattention outcome was evaluated at both baseline and endpoint (4th week). Baseline structural measures of the DLPFC, anterior cingulate cortex (ACC) and subcortical structures, previously associated with ADHD, were quantified. Several linear mixed models, with a three-way interaction between the fixed predictors brain volume or thickness, time, and treatment were calculated. Multiple comparison corrections were applied using the Benjamini-Hochberg method. RESULTS Baseline volume of the left DLPFC regions middle frontal gyrus (t (25) = 3.33, p-adjusted = 0.045, Cohen's d = 1.33, 95% CI = [0.45, 2.19]), inferior frontal gyrus (orbital part) (t (25) = 3.10, p-adjusted = 0.045, Cohen's d = 1.24, 95% CI = [0.37, 2.08]), and of the left ACC supragenual (t (25) = 3.15, p-adjusted = 0.045, Cohen's d = 1.26, 95% CI = [0.39, 2.11]) presented significant association with the inattentive score improvement only in the active tDCS group. More specifically, the smaller these regions were, the more the symptoms improved following anodal right cathodal left DLPFC Hb-tDCS. CONCLUSION Hb-tDCS was associated with greater improvement in brain areas related to attention regulation. Brain MRI can be potentially used to predict clinical response to tDCS in ADHD adults.
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Affiliation(s)
- Pedro Henrique Rodrigues da Silva
- Departamento de Psiquiatria da Faculdade de Medicina da Universidade de São Paulo (USP), São Paulo, Brazil; Division of Neuropsychiatry and Neuromodulation, Massachusetts General Hospital, Harvard Medical School, Boston, USA.
| | | | - Matthias S Luethi
- Departamento de Psiquiatria da Faculdade de Medicina da Universidade de São Paulo (USP), São Paulo, Brazil
| | | | | | | | - Eugenio Horacio Grevet
- Department of Psychiatry and Legal Medicine, Faculty of Medicine, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil; Graduate Program in Psychiatry and Behavioral Sciences, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil; ADHD and Developmental Psychiatry Programs, Hospital de Clínicas de Porto Alegre, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
| | - Claiton Henrique Dotto Bau
- Department of Genetics and Graduate Program in Genetics and Molecular Biology, Instituto de Biociências, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil; Graduate Program in Psychiatry and Behavioral Sciences, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil; ADHD and Developmental Psychiatry Programs, Hospital de Clínicas de Porto Alegre, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
| | - Diego Luiz Rovaris
- Department of Physiology and Biophysics, Instituto de Ciências Biomédicas Universidade de São Paulo, São Paulo, Brazil
| | - Lais B Razza
- Department of Head and Skin, Psychiatry and Medical Psychology, Ghent University Hospital, Ghent University, 9000, Ghent, Belgium; Ghent Experimental Psychiatry (GHEP) Lab, Ghent University, 9000, Ghent, Belgium
| | - Wolnei Caumo
- Laboratory of Pain and Neuromodulation, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil; Post-Graduate Program in Medical Sciences, School of Medicine, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil; Department of Surgery, School of Medicine, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
| | - Joan A Camprodon
- Division of Neuropsychiatry and Neuromodulation, Massachusetts General Hospital, Harvard Medical School, Boston, USA
| | | | - André R Brunoni
- Departamento de Psiquiatria da Faculdade de Medicina da Universidade de São Paulo (USP), São Paulo, Brazil
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Stern P, Kolodny T, Tsafrir S, Cohen G, Shalev L. Unique Patterns of Eye Movements Characterizing Inattentive Reading in ADHD. J Atten Disord 2024; 28:1008-1016. [PMID: 38327026 DOI: 10.1177/10870547231223728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
OBJECTIVE We aimed to identify unique patterns of eye-movements measures reflecting inattentive reading among adults with and without ADHD. METHOD & RESULTS We recorded eye-movements during uninterrupted text reading of typically developed (TD) and ADHD adults. First, we found significantly longer reading time for the ADHD group than the TD group. Further, we detected cases in which words were reread more than twice and found that such occasions were much more frequent in participants with ADHD than in TD participants. Moreover, we discovered that the first reading pass of these words was less sensitive to the length of the word than the first pass of words read only once, indicating a less meaningful reading. CONCLUSION We propose that high rate of words that were reread is a correlate of inattentive reading which is more pronounced among ADHD readers. Implications of the findings in the context of reading comprehension are discussed.
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Kohe SE, Gowing EK, Seo S, Oorschot DE. A Novel Rat Model of ADHD-like Hyperactivity/Impulsivity after Delayed Reward Has Selective Loss of Dopaminergic Neurons in the Right Ventral Tegmental Area. Int J Mol Sci 2023; 24:11252. [PMID: 37511013 PMCID: PMC10379272 DOI: 10.3390/ijms241411252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 07/01/2023] [Accepted: 07/04/2023] [Indexed: 07/30/2023] Open
Abstract
In attention deficit hyperactivity disorder (ADHD), hyperactivity and impulsivity occur in response to delayed reward. Herein we report a novel animal model in which male Sprague-Dawley rats exposed to repeated hypoxic brain injury during the equivalent of extreme prematurity were ADHD-like hyperactive/impulsive in response to delayed reward and attentive at 3 months of age. Thus, a unique animal model of one of the presentations/subtypes of ADHD was discovered. An additional finding is that the repeated hypoxia rats were not hyperactive in the widely used open field test, which is not ADHD specific. Hence, it is recommended that ADHD-like hyperactivity and ADHD-like impulsivity, specifically in response to delayed reward, be a primary component in the design of future experiments that characterize potential animal models of ADHD, replacing open field testing of hyperactivity. Unknown is whether death and/or activity of midbrain dopaminergic neurons contributed to the ADHD-like hyperactivity/impulsivity detected after delayed reward. Hence, we stereologically measured the absolute number of dopaminergic neurons in four midbrain subregions and the average somal/nuclear volume of those neurons. Repeated hypoxia rats had a significant specific loss of dopaminergic neurons in the right ventral tegmental area (VTA) at 2 weeks of age and 18 months of age, providing new evidence of a site of pathology. No dopaminergic neuronal loss occurred in three other midbrain regions. Fewer VTA dopaminergic neurons correlated with increased ADHD-like hyperactivity and impulsivity. Novel early intervention therapies to rescue VTA dopaminergic neurons and potentially prevent ADHD-like hyperactivity/impulsivity can now be investigated.
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Affiliation(s)
- Sarah E Kohe
- Department of Anatomy, School of Biomedical Sciences, Brain Health Research Centre, University of Otago, Dunedin 9016, New Zealand
| | - Emma K Gowing
- Department of Anatomy, School of Biomedical Sciences, Brain Health Research Centre, University of Otago, Dunedin 9016, New Zealand
| | - Steve Seo
- Department of Anatomy, School of Biomedical Sciences, Brain Health Research Centre, University of Otago, Dunedin 9016, New Zealand
| | - Dorothy E Oorschot
- Department of Anatomy, School of Biomedical Sciences, Brain Health Research Centre, University of Otago, Dunedin 9016, New Zealand
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Guo N, Koerts J, Tucha L, Fetter I, Biela C, König M, Bossert M, Diener C, Aschenbrenner S, Weisbrod M, Tucha O, Fuermaier ABM. Stability of Attention Performance of Adults with ADHD over Time: Evidence from Repeated Neuropsychological Assessments in One-Month Intervals. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:15234. [PMID: 36429952 PMCID: PMC9690645 DOI: 10.3390/ijerph192215234] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 11/15/2022] [Accepted: 11/16/2022] [Indexed: 06/16/2023]
Abstract
Neuropsychological assessments of attention are valuable sources of information in the clinical evaluation of adults with attention-deficit/hyperactivity disorder (ADHD). However, it is unclear whether the attention performance of adults with ADHD is stable or fluctuates over time, which is of great importance in the interpretation of clinical assessments. This study aimed to explore the stability of attention performance of adults with ADHD in repeated assessments at one-month intervals. Twenty-one adults diagnosed with ADHD took part in this study by completing selective attention and vigilance tests three times, each one month apart. Test scores of participants were compared with and interpreted based on test norms. A considerable proportion of 'below average' performance scores were observed in most of the variables of selective attention and vigilance in all three assessments. Further, selective attention and vigilance performance scores did not differ significantly between the three repeated assessments. Finally, the majority of participants received consistent test score interpretations across the three repeated assessments. This study confirms previous research and highlights abnormal selective attention and vigilance performance in adults with ADHD. Further, this study preliminarily demonstrates relatively stable attention performance across repeated assessments, which has the potential to support clinical assessment, treatment planning, and evaluation.
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Affiliation(s)
- Nana Guo
- Department of Clinical and Developmental Neuropsychology, Faculty of Behavioral and Social Sciences, University of Groningen, 9712 TS Groningen, The Netherlands
| | - Janneke Koerts
- Department of Clinical and Developmental Neuropsychology, Faculty of Behavioral and Social Sciences, University of Groningen, 9712 TS Groningen, The Netherlands
| | - Lara Tucha
- Department of Clinical and Developmental Neuropsychology, Faculty of Behavioral and Social Sciences, University of Groningen, 9712 TS Groningen, The Netherlands
- Department of Psychiatry and Psychotherapy, University Medical Center Rostock, 18147 Rostock, Germany
| | - Isabel Fetter
- Department of Psychiatry and Psychotherapy, SRH Clinic Karlsbad-Langensteinbach, 76307 Karlsbad-Langensteinbach, Germany
- Department of Clinical Psychology and Neuropsychology, SRH Clinic Karlsbad-Langensteinbach, 76307 Karlsbad-Langensteinbach, Germany
| | - Christina Biela
- Department of Psychiatry and Psychotherapy, SRH Clinic Karlsbad-Langensteinbach, 76307 Karlsbad-Langensteinbach, Germany
- Department of Clinical Psychology and Neuropsychology, SRH Clinic Karlsbad-Langensteinbach, 76307 Karlsbad-Langensteinbach, Germany
| | - Miriam König
- Department of Psychiatry and Psychotherapy, SRH Clinic Karlsbad-Langensteinbach, 76307 Karlsbad-Langensteinbach, Germany
- Department of Clinical Psychology and Neuropsychology, SRH Clinic Karlsbad-Langensteinbach, 76307 Karlsbad-Langensteinbach, Germany
| | - Magdalena Bossert
- Department of Psychiatry and Psychotherapy, SRH Clinic Karlsbad-Langensteinbach, 76307 Karlsbad-Langensteinbach, Germany
- Department of Clinical Psychology and Neuropsychology, SRH Clinic Karlsbad-Langensteinbach, 76307 Karlsbad-Langensteinbach, Germany
| | - Carsten Diener
- Department of Applied Psychology, SRH University Heidelberg, 69123 Heidelberg, Germany
| | - Steffen Aschenbrenner
- Department of Psychiatry and Psychotherapy, SRH Clinic Karlsbad-Langensteinbach, 76307 Karlsbad-Langensteinbach, Germany
- Department of Clinical Psychology and Neuropsychology, SRH Clinic Karlsbad-Langensteinbach, 76307 Karlsbad-Langensteinbach, Germany
| | - Matthias Weisbrod
- Department of Psychiatry and Psychotherapy, SRH Clinic Karlsbad-Langensteinbach, 76307 Karlsbad-Langensteinbach, Germany
- Department of General Psychiatry, Center of Psychosocial Medicine, University of Heidelberg, 69115 Heidelberg, Germany
| | - Oliver Tucha
- Department of Clinical and Developmental Neuropsychology, Faculty of Behavioral and Social Sciences, University of Groningen, 9712 TS Groningen, The Netherlands
- Department of Psychiatry and Psychotherapy, University Medical Center Rostock, 18147 Rostock, Germany
- Department of Psychology, National University of Ireland, Maynooth, W23 F2H6 Maynooth, County Kildare, Ireland
| | - Anselm B. M. Fuermaier
- Department of Clinical and Developmental Neuropsychology, Faculty of Behavioral and Social Sciences, University of Groningen, 9712 TS Groningen, The Netherlands
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Gabay L, Miller P, Alia-Klein N, Lewin MP. Circadian Effects on Attention and Working Memory in College Students With Attention Deficit and Hyperactivity Symptoms. Front Psychol 2022; 13:851502. [PMID: 35651563 PMCID: PMC9150742 DOI: 10.3389/fpsyg.2022.851502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 03/16/2022] [Indexed: 11/13/2022] Open
Abstract
Objective Individuals with an evening chronotype prefer to sleep later at night, wake up later in the day and perform best later in the day as compared to individuals with morning chronotype. Thus, college students without ADHD symptoms with evening chronotypes show reduced cognitive performance in the morning relative to nighttime (i.e., desynchrony effect). In combination with symptoms presented in attention deficit hyperactivity disorder (ADHD), we predicted that having evening chronotype renders impairment in attention during the morning, when students require optimal performance, amplifying desynchrony. Method Four hundred college students were surveyed for evening chronotype and symptoms of ADHD. Of those surveyed, 43 students with evening chronotype (19 with ADHD symptoms) performed laboratory attention tasks and were queried about fatigue during morning and evening sessions. Results Students with ADHD symptoms demonstrated a greater decrement in sustained attentional vigilance when abstaining from stimulants and asked to perform cognitive tests at times misaligned with natural circadian rhythms in arousal compared to their non-ADHD counterparts with the same chronotype. While individuals with ADHD symptoms had slower reaction-times during sustained attention tasks in the morning session compared to those without symptoms, there was no significant group difference in working memory performance, even though both groups made more errors in the morning session compared to the evening session. Conclusion These findings suggest that evening chronotype students with ADHD symptoms are at a greater disadvantage when having to perform sustained attention tasks at times that are not aligned to their circadian rhythm compared to their neuro-typical peers. The implications of this finding may be useful for the provision of disability accommodations to college age students with ADHD when they are expected to perform tasks requiring sustained attention at times misaligned with their circadian rhythms.
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Affiliation(s)
- Lily Gabay
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Pazia Miller
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Nelly Alia-Klein
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Monica P. Lewin
- Department of Psychology, New York University, New York, NY, United States
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6
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Nastou E, Ocklenburg S, Hoogman M, Papadatou-Pastou M. Handedness in ADHD: Meta-Analyses. Neuropsychol Rev 2022; 32:877-892. [PMID: 35064524 DOI: 10.1007/s11065-021-09530-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 10/11/2021] [Indexed: 01/02/2023]
Abstract
Meta-analyses have shown that several neurodevelopmental and psychiatric disorders, such as autism spectrum disorder and schizophrenia, are associated with a higher prevalence of atypical (left-, non-right-, or mixed-) handedness. One neurodevelopmental disorder for which this association is unclear is attention deficit hyperactivity disorder (ADHD). Here, some empirical studies have found evidence for a higher prevalence of atypical handedness in individuals with ADHD compared to neurotypical individuals. However, other studies failed to establish such an association. Therefore, meta-analytic integration is critical to estimate whether or not there is an association between handedness and ADHD. We report the results of three meta-analyses (left-, mixed-, and non-right-handedness) comparing handedness in individuals with ADHD to controls (typically developing individuals). The results show evidence of a trend towards elevated levels of atypical handedness when it comes to differences in left- and mixed-handedness (p = 0.09 and p = 0.07, respectively), but do show clear evidence of elevated levels of non-right-handedness between individuals with ADHD and controls (p = 0.02). These findings are discussed in the context of the hypothesis that ADHD is a disorder in which mostly right-hemispheric brain networks are affected. Since right-handedness represents a dominance of the left motor cortex for fine motor behavior, such as writing, as well as a left-hemispheric dominance for language functions, and about 90% of individuals are right-handers, this hypothesis might explain why there is not stronger evidence for an association of left-handedness with ADHD. We suggest that the mechanisms involved in the pathogenesis of ADHD might show an overlap with the mechanisms involved in handedness strength, but not handedness direction.
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Affiliation(s)
- Evgenia Nastou
- Department of Primary Education, National and Kapodistrian University of Athens, 13A Navarinou Street, 10680, Athens, Greece
| | | | | | - Marietta Papadatou-Pastou
- Department of Primary Education, National and Kapodistrian University of Athens, 13A Navarinou Street, 10680, Athens, Greece. .,Biomedical Research Foundation, Academy of Athens, Athens, Greece.
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Coll-Martín T, Carretero-Dios H, Lupiáñez J. Attentional networks, vigilance, and distraction as a function of attention-deficit/hyperactivity disorder symptoms in an adult community sample. Br J Psychol 2021; 112:1053-1079. [PMID: 34089269 DOI: 10.1111/bjop.12513] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 05/09/2021] [Indexed: 01/29/2023]
Abstract
Attentional difficulties are a core axis in attention-deficit/hyperactivity disorder (ADHD). However, establishing a consistent and detailed pattern of these neurocognitive alterations has not been an easy endeavour. Based on a dimensional approach to ADHD, the present study aims at comprehensively characterizing three key attentional domains: the three attentional networks (alerting, orienting, and executive attention), two components of vigilance (executive and arousal vigilance), and distraction. To do so, we modified a single, fine-grained task (the ANTI-Vea) by adding irrelevant distractors. One hundred and twenty undergraduates completed three self-reports of ADHD symptoms in childhood and adulthood and performed the ANTI-Vea. Despite the low reliability of some ANTI-Vea indexes, the task worked successfully. While ADHD symptoms in childhood were related to alerting network and arousal vigilance, symptoms in adulthood were linked to executive vigilance. No association between ADHD symptom severity and executive attention and distraction was found. In general, our hypotheses about the relationships between ADHD symptoms and attentional processes were partially supported. We discuss our findings according to ADHD theories and attention measurement.
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Affiliation(s)
- Tao Coll-Martín
- Mind, Brain, and Behavior Research Center (CIMCYC), University of Granada, Spain.,Department of Behavioral Sciences Methodology, University of Granada, Spain
| | - Hugo Carretero-Dios
- Mind, Brain, and Behavior Research Center (CIMCYC), University of Granada, Spain.,Department of Behavioral Sciences Methodology, University of Granada, Spain
| | - Juan Lupiáñez
- Mind, Brain, and Behavior Research Center (CIMCYC), University of Granada, Spain.,Department of Experimental Psychology, University of Granada, Spain
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Calderón C, Beyle C, Véliz-García O, Bekios-Calfa J. Psychometric properties of Addenbrooke's Cognitive Examination III (ACE-III): An item response theory approach. PLoS One 2021; 16:e0251137. [PMID: 33956900 PMCID: PMC8101956 DOI: 10.1371/journal.pone.0251137] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 04/21/2021] [Indexed: 11/18/2022] Open
Abstract
The Addenbrooke's Cognitive Examination III is one of the most widely used tests to assess cognitive impairment. Although previous studies have shown adequate levels of diagnostic utility to detect severe impairment, it has not shown sensitivity to detect mild decline. The aim of this study was to evaluate the psychometric properties of Addenbrooke's Cognitive Examination III in a large sample of elderly people through Item Response Theory, due to the lack of studies using this approach. A cross-sectional study was conducted with 1164 people from the age of 60 upwards, of which 63 had a prior diagnosis of Alzheimer dementia. The results showed that, globally, the Addenbrooke's Cognitive Examination III possesses adequate psychometrics properties. Furthermore, the information function test shows that the subscales have different sensitivity to different levels of impairment. These results can contribute to determining patterns of cognitive deterioration for the adequate detection of different levels of dementia. An optimized version is suggested which may be an economic alternative in the applied field.
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Affiliation(s)
- Carlos Calderón
- Escuela de Psicología, Universidad Católica del Norte, Antofagasta, Chile
- * E-mail:
| | - Christian Beyle
- Departamento de Psicología, Universidad Católica de Temuco, Temuco, Chile
| | - Oscar Véliz-García
- Escuela de Psicología, Universidad Católica del Norte, Antofagasta, Chile
| | - Juan Bekios-Calfa
- Departamento de Ingeniería en Sistemas y Ciencias de la Computación, Universidad Católica del Norte, Antofagasta, Chile
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Koerts J, Bangma DF, Fuermaier ABM, Mette C, Tucha L, Tucha O. Financial judgment determination in adults with ADHD. J Neural Transm (Vienna) 2021; 128:969-979. [PMID: 33709182 PMCID: PMC8295146 DOI: 10.1007/s00702-021-02323-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 03/01/2021] [Indexed: 11/27/2022]
Abstract
ADHD has a debilitating influence on everyday functioning, including the capability to make financial decisions. The capability to make financial decisions is a multidimensional construct that includes financial knowledge, financial judgment, financial performance and related contextual factors. So far, the majority of studies in adults with ADHD focused on financial performance, while the other aspects of financial capability were less explored. The current study aims to partly bridge this gap by examining the ability of financial judgment in adults with ADHD. Thirty-nine adults with ADHD and 83 adults without ADHD were included. All participants were assessed with the Financial Competence Assessment Inventory (FCAI) and Financial Decision-Making Interview (FDMI) which both assess the four abilities of financial judgment, i.e., understanding, appreciation, reasoning and communication. The results show that adults with ADHD, compared to adults without ADHD, obtained significantly lower scores on understanding (according to the FCAI and FDMI). Furthermore, adults with ADHD showed a significantly lower appreciation, reasoning and communication (according to the FCAI) than adults without ADHD. In conclusion, adults with ADHD have difficulties with financial judgment especially with the ability to understand information that is relevant for a financial situation or transaction. Furthermore, adults with ADHD were found to have problems with appreciating, reasoning and communicating about practical information that partly relates to their own financial situation (as assessed with the FCAI). A careful assessment of financial capability in adults with ADHD, therefore, appears warranted in clinical practice.
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Affiliation(s)
- Janneke Koerts
- Department of Clinical and Developmental Neuropsychology, University of Groningen, Grote Kruisstraat 2/1, 9712 TS, Groningen, The Netherlands.
| | - Dorien F Bangma
- Department of Psychology, University of Amsterdam, Amsterdam, The Netherlands
| | - Anselm B M Fuermaier
- Department of Clinical and Developmental Neuropsychology, University of Groningen, Grote Kruisstraat 2/1, 9712 TS, Groningen, The Netherlands
| | - Christian Mette
- Department of Social Work and Education, Protestant University of Applied Sciences Bochum, Bochum, Germany
- LVR Hospital Essen, Essen, Germany
- Department of Psychiatry and Psychotherapy, Faculty of Medicine, University of Duisburg-Essen, Duisburg-Essen, Germany
| | - Lara Tucha
- Department of Psychiatry and Psychotherapy, University Medical Center Rostock, Rostock, Germany
| | - Oliver Tucha
- Department of Clinical and Developmental Neuropsychology, University of Groningen, Grote Kruisstraat 2/1, 9712 TS, Groningen, The Netherlands
- Department of Psychiatry and Psychotherapy, University Medical Center Rostock, Rostock, Germany
- Department of Psychology, Maynooth University, National University of Ireland, Maynooth, Ireland
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Abstract
Recent epidemiological evidence indicates that diagnosis of attention-deficit/hyperactivity disorder (ADHD) is associated with increased risk for diseases of the basal ganglia and cerebellum, including Parkinson's disease (PD). The evidence reviewed here indicates that deficits in striatal dopamine are a shared component of the causal chains that produce these disorders. Neuropsychological studies of adult ADHD, prodromal PD, and early-stage PD reveal similar deficits in executive functions, memory, attention, and inhibition that are mediated by similar neural substrates. These and other findings are consistent with the possibility that ADHD may be part of the PD prodrome. The mechanisms that may mediate the association between PD and ADHD include neurotoxic effects of stimulants, other environmental exposures, and Lewy pathology. Understanding the nature of the association between PD and ADHD may provide insight into the etiology and pathogenesis of both disorders. The possible contribution of stimulants to this association may have important clinical and public health implications.
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Federico A, Mantovani E, Casari R, Bertoldi A, Lugoboni F, Tamburin S. Adult attention-deficit/hyperactivity disorder symptoms, cognitive dysfunction and quality of life in high-dose use of benzodiazepine and Z-drug. J Neural Transm (Vienna) 2020; 128:1109-1119. [PMID: 33331955 PMCID: PMC8295124 DOI: 10.1007/s00702-020-02285-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 11/30/2020] [Indexed: 12/11/2022]
Abstract
High-dose use of benzodiazepines (BZDs) and Z-drugs was found to be associated with adult attention deficit/hyperactivity disorder (ADHD) and multidomain cognitive deficits, but the interplay between these factors and its effect on quality of life (QoL) is unclear. We explored (a) whether cognitive dysfunction differs in high-dose BZD/Z-drug users with and without adult ADHD and (b) the impact of cognitive deficits and adult ADHD on QoL in this substance-use disorder (SUD). From January 2015 to December 2019, we recruited 207 high-dose BZD/Z-drug users seeking treatment. We assessed the presence of adult ADHD with a screening tool, which was validated in SUD patients, and collected demographic, clinical and QoL data from the 76 included patients. A neuropsychological battery explored five cognitive domains. We found that: (a) screening for adult ADHD was frequently positive; (b) Short Form-36 (SF-36), a self-administered QoL questionnaire, was worse than the general population and worse in patients positive (ADHD+) vs. those negative (ADHD−) to ADHD screening tool; (c) executive function was significantly worse in ADHD+ than ADHD− patients; (d) some SF-36 dimensions were negatively influenced by executive dysfunction; (e) multivariate analysis showed an interplay between adult ADHD and cognitive dysfunction in worsening QoL. We documented a complex interplay between adult ADHD, cognitive dysfunction and QoL in high-dose BZD/Z-drug users. Assessing adult ADHD, neuropsychological measures and QoL may offer a full scenario of these patients, who are frequently impaired in everyday activities. Future research should explore whether pharmacological treatment might improve cognitive dysfunction and QoL in this SUD.
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Affiliation(s)
- Angela Federico
- Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Piazzale Scuro 10, 37134, Verona, Italy
| | - Elisa Mantovani
- Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Piazzale Scuro 10, 37134, Verona, Italy
| | - Rebecca Casari
- Addiction Medicine Unit, Department of Medicine, Verona University Hospital, Piazzale Scuro 10, Verona, Italy
| | - Anna Bertoldi
- Addiction Medicine Unit, Department of Medicine, Verona University Hospital, Piazzale Scuro 10, Verona, Italy
| | - Fabio Lugoboni
- Addiction Medicine Unit, Department of Medicine, Verona University Hospital, Piazzale Scuro 10, Verona, Italy
| | - Stefano Tamburin
- Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Piazzale Scuro 10, 37134, Verona, Italy.
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12
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Groen Y, Priegnitz U, Fuermaier ABM, Tucha L, Tucha O, Aschenbrenner S, Weisbrod M, Garcia Pimenta M. Testing the relation between ADHD and hyperfocus experiences. RESEARCH IN DEVELOPMENTAL DISABILITIES 2020; 107:103789. [PMID: 33126147 DOI: 10.1016/j.ridd.2020.103789] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 07/08/2020] [Accepted: 09/21/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Attention-deficit/hyperactivity disorder (ADHD) has been associated with hyperfocus, a transient experience of enhanced attentional focus and diminished awareness of time and the environment. AIMS This study aims to investigate the association between the frequency, duration and pervasiveness of hyperfocus across different situations in adults with and without ADHD. METHOD AND PROCEDURES Within a healthy sample (n = 1124), we analysed correlations between scores on the ADHD Rating Scale and self-reports of frequency, duration and pervasiveness of hyperfocus. An ADHD patient group (n = 78) was compared to matched healthy participants on all hyperfocus variables. OUTCOMES AND RESULTS In healthy adults, the frequency of hyperfocus was positively correlated with ADHD traits; older age and higher education were correlated with fewer hyperfocus occurrences in a smaller number of situations. ADHD patients and matched controls did not differ in the occurrence, frequency, duration and pervasiveness of hyperfocus, but hyperfocus was less likely to occur in educational and social situations in ADHD patients. CONCLUSIONS AND IMPLICATIONS Hyperfocus experiences are not specific of ADHD patients. The divergent findings might reflect multiple hyperfocus dimensions (situational and motivational) assessed in different studies which need to be addressed in future research.
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Affiliation(s)
- Yvonne Groen
- University of Groningen, Clinical and Developmental Neuropsychology, Grote Kruisstraat 2/1, 9712 TS, Groningen, the Netherlands
| | - Ulrike Priegnitz
- University of Groningen, Clinical and Developmental Neuropsychology, Grote Kruisstraat 2/1, 9712 TS, Groningen, the Netherlands
| | - Anselm B M Fuermaier
- University of Groningen, Clinical and Developmental Neuropsychology, Grote Kruisstraat 2/1, 9712 TS, Groningen, the Netherlands
| | - Lara Tucha
- Department of Psychiatry and Psychotherapy, University Medical Center Rostock, Gehlsheimer Str. 20, 18147, Rostock, Germany
| | - Oliver Tucha
- Department of Psychiatry and Psychotherapy, University Medical Center Rostock, Gehlsheimer Str. 20, 18147, Rostock, Germany
| | - Steffen Aschenbrenner
- Department of Psychiatry and Psychotherapy, SRH Clinic Karlsbad-Langensteinbach, 76307, Karlsbad, Germany; Clinical Psychology and Neuropsychology, SRH Clinic Karlsbad-Langensteinbach, 76307, Karlsbad, Germany
| | - Matthias Weisbrod
- Department of Psychiatry and Psychotherapy, SRH Clinic Karlsbad-Langensteinbach, 76307, Karlsbad, Germany; Department of General Psychiatry, Center of Psychosocial Medicine, University of Heidelberg, Germany
| | - Miguel Garcia Pimenta
- University of Groningen, Clinical and Developmental Neuropsychology, Grote Kruisstraat 2/1, 9712 TS, Groningen, the Netherlands.
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13
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Salomone S, Fleming GR, Bramham J, O'Connell RG, Robertson IH. Neuropsychological Deficits in Adult ADHD: Evidence for Differential Attentional Impairments, Deficient Executive Functions, and High Self-Reported Functional Impairments. J Atten Disord 2020; 24:1413-1424. [PMID: 26769747 DOI: 10.1177/1087054715623045] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Objective: This study is aimed to investigate neuropsychological deficits in adult ADHD. Method: Neuropsychological deficits in terms of executive functions, divided, selective, and sustained attention, were investigated in a group of adults with ADHD using a series of neuropsychological tests as well as electroencephalography (EEG). Subjective ratings of everyday life attention and memory problems were also collected. Results: Adults with ADHD showed impairments in executive functions, divided attention and sustained attention, compared with adult controls. Performance on selective attention tasks in adults with ADHD was instead no different from control participants' performance. EEG results confirmed neuropsychological findings by showing a selective impairment on P3 event-related potential (ERP) amplitude indicative of sustained attention deficits. Higher subjective ratings of everyday attentional and memory problems were also found in the ADHD group compared with the control group. Conclusion: This pattern of results suggests differential impairments of attentional skills. Impaired executive functions and higher subjective functional impairments were also found.
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Affiliation(s)
| | | | - Jessica Bramham
- St. Patrick's University Hospital, Dublin, Ireland.,University College Dublin (UCD), Dublin, Ireland
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14
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de la Peña IC, Pan MC, Thai CG, Alisso T. Attention-Deficit/Hyperactivity Disorder Predominantly Inattentive Subtype/Presentation: Research Progress and Translational Studies. Brain Sci 2020; 10:brainsci10050292. [PMID: 32422912 PMCID: PMC7287898 DOI: 10.3390/brainsci10050292] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 05/08/2020] [Accepted: 05/09/2020] [Indexed: 02/01/2023] Open
Abstract
Research on the predominantly inattentive attention-deficit/hyperactivity disorder (ADHD-PI) subtype/presentation is important given its high prevalence, but paradoxically it is under-recognized and undertreated. The temporal stability of the inattention symptom could impact the high worldwide prevalence of ADHD-PI. Some evidence suggests differences in the nature of attentional deficit in ADHD-PI vs. that in other subtypes. Impairments in neuropsychological, neurocognitive, and social functioning are also evident in ADHD-PI, which could be specific to the subtype (e.g., processing speed, social perception, and skills), or differ from others in severity. Neuroimaging studies have also revealed ADHD-PI-specific neuropathological abnormalities and those that are shared with other subtypes. ADHD-PI is highly comorbid with learning and internalizing (e.g., anxiety and depression) disorders. There is no solid evidence for ADHD-PI-specific genetic etiologies and differential responses of subtypes to ADHD medications. Translational studies have used the Wistar Kyoto/NCrl substrain which requires further characterizations as an ADHD-PI model. Overall, ADHD-PI research has been conducted in the context of the Diagnostic and Statistical Manual, which arguably does not conform to the widely recognized "dimensional" view of ADHD. The Research Domain Criteria has been proposed to provide a novel framework for understanding the nature of neuropsychiatric illnesses and ultimately improve their diagnosis and treatment.
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Affiliation(s)
- Ike C. de la Peña
- Department of Pharmaceutical and Administrative Sciences, Loma Linda University School of Pharmacy, Loma Linda, CA 92350, USA; (C.G.T.); (T.A.)
- Correspondence: ; Tel.: +1-909-651-5995; Fax: +1-909-558-0446
| | - Michael C. Pan
- Department of Psychology, Korea University, Seoul 02841, Korea;
- Division of Social Sciences, University of the Philippines Visayas Tacloban College, Tacloban 6500, Philippines
| | - Chau Giang Thai
- Department of Pharmaceutical and Administrative Sciences, Loma Linda University School of Pharmacy, Loma Linda, CA 92350, USA; (C.G.T.); (T.A.)
| | - Tamara Alisso
- Department of Pharmaceutical and Administrative Sciences, Loma Linda University School of Pharmacy, Loma Linda, CA 92350, USA; (C.G.T.); (T.A.)
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15
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Boxhoorn S, Lopez E, Schmidt C, Schulze D, Hänig S, Cholemkery H, Freitag CM. Attention as neurocognitive endophenotype of ADHD across the life span: a family study. Eur Arch Psychiatry Clin Neurosci 2019; 269:627-644. [PMID: 31069500 DOI: 10.1007/s00406-019-00993-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2018] [Accepted: 02/22/2019] [Indexed: 12/11/2022]
Abstract
Endophenotypes mediate pathways between genetic variations and the psychiatric phenotype, or share genetic risk with the psychiatric phenotype. Identifying endophenotypes is an important step to unravel disease pathways underlying complex psychiatric phenotypes such as ADHD. Potential viable endophenotypes for ADHD across the lifespan are neurocognitive measures of basic attention functions, such as sustained attention, and executive attention functions (EF), such as inhibition. The present study evaluated the endophenotype criteria of familiality and state-independency for measures of basic attention and EF in affected- and unaffected parents of children with ADHD (N = 139), and typically developing children (N = 60). In addition, the added value of neurocognitive measures relative to questionnaire data in genetically informed designs was explored by comparing the intergenerational transmission of neurocognitive measures to those of ADHD symptom scores. Results revealed small-to-medium-sized familial effects of ADHD for reaction time measures of EF components and state-independency given familial effects. Parent-child correlations as estimates of intergenerational transmission of those neurocognitive measures were not higher than those of behavioral ADHD symptom ratings. Taken together, our results argue against neurocognitive measures as pivotal endophenotypes for ADHD across the lifespan. If studied as neurocognitive endophenotypes of ADHD in adults, reaction time measures of executive-rather than basic attention function-seem to be more sensitive.
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Affiliation(s)
- Sara Boxhoorn
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, University Hospital Frankfurt, Goethe University Frankfurt am Main, Deutschordenstr. 50, 60528, Frankfurt am Main, Germany
| | - Eva Lopez
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, University Hospital Frankfurt, Goethe University Frankfurt am Main, Deutschordenstr. 50, 60528, Frankfurt am Main, Germany
| | - Catharina Schmidt
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, University Hospital Frankfurt, Goethe University Frankfurt am Main, Deutschordenstr. 50, 60528, Frankfurt am Main, Germany
| | - Diana Schulze
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, University Hospital Frankfurt, Goethe University Frankfurt am Main, Deutschordenstr. 50, 60528, Frankfurt am Main, Germany
| | - Susann Hänig
- Department of Child and Adolescent Psychiatry and Psychotherapy, Saarland University Hospital, Homburg, Germany
| | - Hannah Cholemkery
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, University Hospital Frankfurt, Goethe University Frankfurt am Main, Deutschordenstr. 50, 60528, Frankfurt am Main, Germany
| | - Christine M Freitag
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, University Hospital Frankfurt, Goethe University Frankfurt am Main, Deutschordenstr. 50, 60528, Frankfurt am Main, Germany.
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16
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Basic processes as foundations of cognitive impairment in adult ADHD. J Neural Transm (Vienna) 2019; 126:1347-1362. [PMID: 31321549 PMCID: PMC6764934 DOI: 10.1007/s00702-019-02049-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 07/11/2019] [Indexed: 12/23/2022]
Abstract
Attention deficit hyperactivity disorder (ADHD) in adulthood is associated with impairment of multiple aspects of cognition which adversely affect the individual's everyday functioning. However, little is known about how these impairments are intertwined. This study explores whether impairments in basic processes (processing speed and distractibility) in adults with ADHD explain impairments in higher order functions, namely executive functions, memory, and complex attention. Furthermore, it is explored whether pharmacological treatment with methylphenidate (MPH) affects basic processes and higher order functions. A between-subjects design compared patients with ADHD without stimulant drug treatment (N = 55) and patients with ADHD treated with MPH (N = 31) with a healthy control group (N = 80). A neuropsychological test battery assessing basic processes and higher order functions was administered. Hierarchical logistic regression analyses were performed to evaluate the contribution of basic processes to impairments in higher order functions. Patients with ADHD not treated with MPH showed impairments in basic processes and higher order functions compared to controls. The impairments in basic processes explained 41-43% of impairments in executive functions, 27-29% in memory, and 56-74% in complex attention. In patients with ADHD treated with MPH, basic processes were not impaired and did not contribute significantly to impairments of higher order functions. Basic processes may constitute part of the foundation of cognitive impairments in adult ADHD. MPH may improve cognitive performance, presumably through improving basic processes. Applying this information could optimize neuropsychological assessments and inform treatment strategies by targeting basic processes.
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17
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Ding C, Liu M, Wang Y, Yan F, Yan L. Behavior Evaluation Based on Electroencephalograph and Personality in a Simulated Driving Experiment. Front Psychol 2019; 10:1235. [PMID: 31214070 PMCID: PMC6558165 DOI: 10.3389/fpsyg.2019.01235] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 05/10/2019] [Indexed: 11/13/2022] Open
Abstract
Assessments and predictions of driving behavior are very important to improve traffic safety. We hypothesized that there were some patterns of driving behaviors, and these patterns had some correlation with cognitive states and personalities. To test this hypothesis, an evaluation of driving status, based on electroencephalography (EEG) and steering behavior in a simulated driving experiment, was designed and performed. Unity 3D was utilized to design the simulated driving scene. A photoelectric encoder fixed on the steering wheel and the corresponding data collection, transmission, and storage device was developed by Arduino, to acquire the rotation direction, angle, angular velocity, and angular acceleration of the steering wheel. Biopac MP 150 was utilized to collect the EEG data simultaneously during driving. A total of 23 subjects (mean age 23.6 ± 1.3 years, driving years: 2.4 ± 1.6 years, 21 males and two females) participated in this study. The Fuzzy C-means algorithm (FCMA) was utilized to extract patterns of driving behavior and the cognitive state within the window width of 20 s. The behaviors were divided into five kinds, i.e., negative, normal, alert, stress, and violent behavior, respectively, based on the standard deviation of steering wheel data. The cognitive states were divided into four kinds, i.e., negative, calm, alert, and tension, respectively, based on the EEG data. The correlation of these data, together with the personality traits evaluated using Cattell 16 Personality Factor Questionnaire (16PF) were analyzed using multiclass logistic regression. Results indicated the significance of the cognitive state and seven personality traits [apprehension (O), rule consciousness (G), reasoning (B), emotional stability (C), liveliness (F), vigilance (L), and perfectionism (Q3)] in predicting driving behaviors, and the prediction accuracy was 80.2%. The negative and alert cognitive states were highly correlated with dangerous driving, including negative and violent behaviors. Personality traits complicate the relationship with driving behaviors, which may vary across different types of subjects and traffic accidents.
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Affiliation(s)
- Changhao Ding
- Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan, China
- Hubei Collaborative Innovation Center for Automotive Components Technology, Wuhan, China
| | - Mutian Liu
- Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan, China
- Hubei Collaborative Innovation Center for Automotive Components Technology, Wuhan, China
| | - Yi Wang
- Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan, China
- Hubei Collaborative Innovation Center for Automotive Components Technology, Wuhan, China
| | - Fuwu Yan
- Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan, China
- Hubei Collaborative Innovation Center for Automotive Components Technology, Wuhan, China
| | - Lirong Yan
- Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan, China
- Hubei Collaborative Innovation Center for Automotive Components Technology, Wuhan, China
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18
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Abstract
Is covert visuospatial attention-selective processing of information in the absence of eye movements-preserved in adults with attention-deficit/hyperactivity disorder (ADHD)? Previous findings are inconclusive due to inconsistent terminology and suboptimal methodology. To settle this question, we used well-established spatial cueing protocols to investigate the perceptual effects of voluntary and involuntary attention on an orientation discrimination task for a group of adults with ADHD and their neurotypical age-matched and gender-matched controls. In both groups, voluntary attention significantly improved accuracy and decreased reaction times at the relevant location, but impaired accuracy and slowed reaction times at irrelevant locations, relative to a distributed attention condition. Likewise, involuntary attention improved accuracy and speeded responses. Critically, the magnitudes of all these orienting and reorienting attention effects were indistinguishable between groups. Thus, these counterintuitive findings indicate that spatial covert attention remains functionally intact in adults with ADHD.
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Affiliation(s)
- Mariel Roberts
- Department of Psychology, New York University, New York, NY, USA.
| | - Brandon K Ashinoff
- Department of Psychology, New York University, New York, NY, USA
- School of Psychology, University of Birmingham, Edgbaston, Birmingham, UK
| | - F Xavier Castellanos
- NYU Child Study Center, Department of Child and Adolescent Psychiatry, New York University Langone Medical Center, New York, NY, USA
| | - Marisa Carrasco
- Department of Psychology, New York University, New York, NY, USA.
- Center for Neural Science, New York University, New York, NY, USA.
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19
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Groen Y, Fuermaier ABM, Tucha L, Weisbrod M, Aschenbrenner S, Tucha O. A situation-specific approach to measure attention in adults with ADHD: The everyday life attention scale (ELAS). APPLIED NEUROPSYCHOLOGY-ADULT 2018. [DOI: 10.1080/23279095.2018.1437730] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Yvonne Groen
- Clinical and Developmental Neuropsychology, University of Groningen, Groningen, The Netherlands
| | - Anselm B. M. Fuermaier
- Clinical and Developmental Neuropsychology, University of Groningen, Groningen, The Netherlands
| | - Lara Tucha
- Clinical and Developmental Neuropsychology, University of Groningen, Groningen, The Netherlands
| | - Matthias Weisbrod
- Psychiatry and Psychotherapy, SRH Clinic Karlsbad-Langensteinbach, Karlsbad, Germany
- General Psychiatry, Center of Psychosocial Medicine, University of Heidelberg, Heidelberg, German
| | - Steffen Aschenbrenner
- Clinical Psychology and Neuropsychology, SRH Clinic Karlsbad-Langensteinbach, Karlsbad, Germany
| | - Oliver Tucha
- Clinical and Developmental Neuropsychology, University of Groningen, Groningen, The Netherlands
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20
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Fuermaier ABM, Fricke JA, de Vries SM, Tucha L, Tucha O. Neuropsychological assessment of adults with ADHD: A Delphi consensus study. APPLIED NEUROPSYCHOLOGY-ADULT 2018; 26:340-354. [DOI: 10.1080/23279095.2018.1429441] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Anselm B. M. Fuermaier
- Department of Clinical and Developmental Neuropsychology, Faculty of Behavioral and Social Sciences, University of Groningen, Groningen, The Netherlands
| | - Jan A. Fricke
- Department of Clinical and Developmental Neuropsychology, Faculty of Behavioral and Social Sciences, University of Groningen, Groningen, The Netherlands
| | - Stefanie M. de Vries
- Department of Clinical and Developmental Neuropsychology, Faculty of Behavioral and Social Sciences, University of Groningen, Groningen, The Netherlands
| | - Lara Tucha
- Department of Clinical and Developmental Neuropsychology, Faculty of Behavioral and Social Sciences, University of Groningen, Groningen, The Netherlands
| | - Oliver Tucha
- Department of Clinical and Developmental Neuropsychology, Faculty of Behavioral and Social Sciences, University of Groningen, Groningen, The Netherlands
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21
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Crespo Y, Soriano MF, Iglesias-Parro S, Aznarte JI, Ibáñez-Molina AJ. Spatial Analysis of Handwritten Texts as a Marker of Cognitive Control. J Mot Behav 2017; 50:643-652. [DOI: 10.1080/00222895.2017.1400945] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Y. Crespo
- Psychology Department, University of Jaén, Jaén, Spain
- Mental Health Unit, Hospital San Agustín, Linares, Spain
| | - M. F. Soriano
- Mental Health Unit, Hospital San Agustín, Linares, Spain
| | | | - J. I. Aznarte
- Mental Health Unit, Hospital San Agustín, Linares, Spain
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22
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Fuermaier ABM, Hüpen P, De Vries SM, Müller M, Kok FM, Koerts J, Heutink J, Tucha L, Gerlach M, Tucha O. Perception in attention deficit hyperactivity disorder. ACTA ACUST UNITED AC 2017; 10:21-47. [PMID: 28401487 DOI: 10.1007/s12402-017-0230-0] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2016] [Accepted: 03/30/2017] [Indexed: 10/19/2022]
Abstract
A large body of research demonstrated that individuals with attention deficit hyperactivity disorder (ADHD) suffer from various neuropsychological deficits. In contrast, less is known and only divergent evidence exists on perceptual functions of individuals with ADHD. This is problematic as neuropsychological and perceptual functions are closely interrelated and are often difficult to disentangle in behavioral assessments. This study presents the conduct and results of a systematic literature review on perceptual functions in children and adults with ADHD. This review considers studies using psychophysical methods (objective measurements) and self- and informant reports (subjective measurements). Results indicate that individuals with ADHD have altered perceptual functions in various domains as compared to typically developing individuals. Increased perceptual functions in individuals with ADHD were found with regard to olfactory detection thresholds, whereas reduced perceptual functions were evident for aspects of visual and speech perception. Moreover, individuals with ADHD were found to experience discomfort to sensory stimuli at a lower level than typically developing individuals. Alterations of perceptual functions in individuals with ADHD were shown to be moderated by various factors, such as pharmacological treatment, cognitive functions, and symptom severity. We conclude by giving implications for daily life functioning and clinical practice.
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Affiliation(s)
- Anselm B M Fuermaier
- Department of Clinical and Developmental Neuropsychology, Faculty of Behavioural and Social Sciences, University of Groningen, Grote Kruisstraat 2/1, 9712 TS, Groningen, The Netherlands.
| | - Philippa Hüpen
- Department of Clinical and Developmental Neuropsychology, Faculty of Behavioural and Social Sciences, University of Groningen, Grote Kruisstraat 2/1, 9712 TS, Groningen, The Netherlands
| | - Stefanie M De Vries
- Department of Clinical and Developmental Neuropsychology, Faculty of Behavioural and Social Sciences, University of Groningen, Grote Kruisstraat 2/1, 9712 TS, Groningen, The Netherlands
| | - Morgana Müller
- Department of Clinical and Developmental Neuropsychology, Faculty of Behavioural and Social Sciences, University of Groningen, Grote Kruisstraat 2/1, 9712 TS, Groningen, The Netherlands
| | - Francien M Kok
- Department of Clinical and Developmental Neuropsychology, Faculty of Behavioural and Social Sciences, University of Groningen, Grote Kruisstraat 2/1, 9712 TS, Groningen, The Netherlands
| | - Janneke Koerts
- Department of Clinical and Developmental Neuropsychology, Faculty of Behavioural and Social Sciences, University of Groningen, Grote Kruisstraat 2/1, 9712 TS, Groningen, The Netherlands
| | - Joost Heutink
- Department of Clinical and Developmental Neuropsychology, Faculty of Behavioural and Social Sciences, University of Groningen, Grote Kruisstraat 2/1, 9712 TS, Groningen, The Netherlands.,Centre of Expertise for Blind and Partially Sighted People, Royal Dutch Visio, 9752 AC, Haren, The Netherlands
| | - Lara Tucha
- Department of Clinical and Developmental Neuropsychology, Faculty of Behavioural and Social Sciences, University of Groningen, Grote Kruisstraat 2/1, 9712 TS, Groningen, The Netherlands
| | - Manfred Gerlach
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, Centre for Mental Health, University Hospital of Würzburg, Füchsleinstrasse 15, 97080, Würzburg, Germany
| | - Oliver Tucha
- Department of Clinical and Developmental Neuropsychology, Faculty of Behavioural and Social Sciences, University of Groningen, Grote Kruisstraat 2/1, 9712 TS, Groningen, The Netherlands
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23
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Tucha L, Fuermaier ABM, Koerts J, Buggenthin R, Aschenbrenner S, Weisbrod M, Thome J, Lange KW, Tucha O. Sustained attention in adult ADHD: time-on-task effects of various measures of attention. J Neural Transm (Vienna) 2017; 124:39-53. [PMID: 26206605 PMCID: PMC5281679 DOI: 10.1007/s00702-015-1426-0] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Accepted: 07/11/2015] [Indexed: 11/28/2022]
Abstract
Neuropsychological research on adults with ADHD showed deficits in various aspects of attention. However, the majority of studies failed to explore the change of performance over time, so-called time-on-task effects. As a consequence, little is known about sustained attention performance of adults with ADHD. The aim of the present study was therefore to test the hypothesis of sustained attention deficits of adults with ADHD. Twenty-nine adults with ADHD and 30 healthy individuals were assessed on four 20-min tests of sustained attention, measuring alertness, selective attention, divided attention and flexibility. The deterioration of performance over time (time-on-task effects) was compared between patients with ADHD and healthy individuals to conclude on sustained attention performance. Compared to healthy individuals, patients with ADHD showed significant deficits of medium size in selective attention and divided attention. Furthermore, medium sustained attention deficits was observed in measures of alertness, selective attention and divided attention. This study supports the notion of sustained attention deficits of adults with ADHD.
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Affiliation(s)
- Lara Tucha
- Department of Clinical and Developmental Neuropsychology, University of Groningen, Grote Kruisstraat 2/1, 9712 TS, Groningen, The Netherlands
| | - Anselm B M Fuermaier
- Department of Clinical and Developmental Neuropsychology, University of Groningen, Grote Kruisstraat 2/1, 9712 TS, Groningen, The Netherlands.
| | - Janneke Koerts
- Department of Clinical and Developmental Neuropsychology, University of Groningen, Grote Kruisstraat 2/1, 9712 TS, Groningen, The Netherlands
| | - Rieka Buggenthin
- Department of Clinical and Developmental Neuropsychology, University of Groningen, Grote Kruisstraat 2/1, 9712 TS, Groningen, The Netherlands
| | - Steffen Aschenbrenner
- Department of Clinical Psychology and Neuropsychology, SRH Clinic Karlsbad-Langensteinbach, Karlsbad-Langensteinbach, Germany
| | - Matthias Weisbrod
- Department of Psychiatry and Psychotherapy, SRH Clinic Karlsbad-Langensteinbach, Karlsbad-Langensteinbach, Germany
- Section for Experimental Psychopathology, Centre for Psychosocial Medicine, University of Heidelberg, Heidelberg, Germany
| | - Johannes Thome
- Department of Psychiatry and Psychotherapy, University of Rostock, Rostock, Germany
| | - Klaus W Lange
- Department of Experimental Psychology, University of Regensburg, Regensburg, Germany
| | - Oliver Tucha
- Department of Clinical and Developmental Neuropsychology, University of Groningen, Grote Kruisstraat 2/1, 9712 TS, Groningen, The Netherlands
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24
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Hauser J, Reissmann A, Sontag TA, Tucha O, Lange KW. Effects of methylphenidate on attention in Wistar rats treated with the neurotoxin N-(2-chloroethyl)-N-ethyl-2-bromobenzylamine (DSP4). J Neural Transm (Vienna) 2017; 124:643-654. [PMID: 28110352 DOI: 10.1007/s00702-017-1679-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 01/11/2017] [Indexed: 12/14/2022]
Abstract
The aim of this study was to assess the effects of the neurotoxin N-(2-chloroethyl)-N-ethyl-2-bromobenzylamine (DSP4) on attention in rats as measured using the 5-choice-serial-reaction-time task (5CSRTT) and to investigate whether methylphenidate has effects on DSP4-treated rats. Methylphenidate is a noradrenaline and dopamine reuptake inhibitor and commonly used in the pharmacological treatment of individuals with attention deficit/hyperactivity disorder (ADHD). Wistar rats were trained in the 5CSRTT and treated with one of three doses of DSP4 or saline. Following the DSP4 treatment rats were injected with three doses of methylphenidate or saline and again tested in the 5CSRTT. The treatment with DSP4 caused a significant decline of performance in the number of correct responses and a decrease in response accuracy. A reduction in activity could also be observed. Whether or not the cognitive impairments are due to attention deficits or changes in explorative behaviour or activity remains to be investigated. The treatment with methylphenidate had no beneficial effect on the rats' performance regardless of the DSP4 treatment. In the group without DSP4 treatment, methylphenidate led to a reduction in response accuracy and bidirectional effects in regard to parameters related to attention. These findings support the role of noradrenaline in modulating attention and call for further investigations concerning the effects of methylphenidate on attentional processes in rats.
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Affiliation(s)
- Joachim Hauser
- Department of Experimental Psychology, University of Regensburg, 93040, Regensburg, Germany
| | - Andreas Reissmann
- Department of Experimental Psychology, University of Regensburg, 93040, Regensburg, Germany
| | - Thomas-A Sontag
- Department of Experimental Psychology, University of Regensburg, 93040, Regensburg, Germany
| | - Oliver Tucha
- Department of Clinical and Developmental Neuropsychology, University of Groningen, Groningen, The Netherlands
| | - Klaus W Lange
- Department of Experimental Psychology, University of Regensburg, 93040, Regensburg, Germany.
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De la Torre GG, Martin A, Cervantes E, Guil R, Mestre JM. Attention lapses in children with spina bifida and hydrocephalus and children with attention-deficit/hyperactivity disorder. J Clin Exp Neuropsychol 2016; 39:563-573. [DOI: 10.1080/13803395.2016.1249828] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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26
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Fasmer OB, Mjeldheim K, Førland W, Hansen AL, Syrstad VEG, Oedegaard KJ, Berle JØ. Linear and non-linear analyses of Conner's Continuous Performance Test-II discriminate adult patients with attention deficit hyperactivity disorder from patients with mood and anxiety disorders. BMC Psychiatry 2016; 16:284. [PMID: 27515830 PMCID: PMC4982130 DOI: 10.1186/s12888-016-0993-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Accepted: 08/03/2016] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Attention Deficit Hyperactivity Disorder (ADHD) is a heterogeneous disorder. Therefore it is important to look for factors that can contribute to better diagnosis and classification of these patients. The aims of the study were to characterize adult psychiatric out-patients with a mixture of mood, anxiety and attentional problems using an objective neuropsychological test of attention combined with an assessment of mood instability. METHOD Newly referred patients (n = 99; aged 18-65 years) requiring diagnostic evaluation of ADHD, mood or anxiety disorders were recruited, and were given a comprehensive diagnostic evaluation including the self-report form of the cyclothymic temperament scale and Conner's Continuous Performance Test II (CPT-II). In addition to the traditional measures from this test we have extracted raw data and analysed time series using linear and non-linear mathematical methods. RESULTS Fifty patients fulfilled criteria for ADHD, while 49 did not, and were given other psychiatric diagnoses (clinical controls). When compared to the clinical controls the ADHD patients had more omission and commission errors, and higher reaction time variability. Analyses of response times showed higher values for skewness in the ADHD patients, and lower values for sample entropy and symbolic dynamics. Among the ADHD patients 59 % fulfilled criteria for a cyclothymic temperament, and this group had higher reaction time variability and lower scores on complexity than the group without this temperament. CONCLUSION The CPT-II is a useful instrument in the assessment of ADHD in adult patients. Additional information from this test was obtained by analyzing response times using linear and non-linear methods, and this showed that ADHD patients with a cyclothymic temperament were different from those without this temperament.
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Affiliation(s)
- Ole Bernt Fasmer
- Division of Psychiatry, Haukeland University Hospital, Bergen, Norway. .,Department of Clinical Medicine, Section for Psychiatry, University of Bergen, Bergen, Norway. .,K.G. Jebsen Centre for Research on Neuropsychiatric Disorders, Bergen, Norway. .,Department of Clinical Medicine, Section for Psychiatry, University of Bergen, Haukeland University Hospital, N-5021, Bergen, Norway.
| | | | | | - Anita L. Hansen
- Department of Clinical Psychology, University of Bergen, Bergen, Norway ,Centre for Research and Education in Forensic Psychiatry, Haukeland University Hospital, Bergen, Norway
| | - Vigdis Elin Giæver Syrstad
- Division of Psychiatry, Haukeland University Hospital, Bergen, Norway ,Department of Neuroscience, the Norwegian University of Science and Technology, Trondheim, Norway
| | - Ketil J. Oedegaard
- Division of Psychiatry, Haukeland University Hospital, Bergen, Norway ,Department of Clinical Medicine, Section for Psychiatry, University of Bergen, Bergen, Norway ,K.G. Jebsen Centre for Research on Neuropsychiatric Disorders, Bergen, Norway
| | - Jan Øystein Berle
- Division of Psychiatry, Haukeland University Hospital, Bergen, Norway
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Dobson-Patterson R, O'Gorman JG, Chan RCK, Shum DHK. ADHD subtypes and neuropsychological performance in an adult sample. RESEARCH IN DEVELOPMENTAL DISABILITIES 2016; 55:55-63. [PMID: 27043366 DOI: 10.1016/j.ridd.2016.03.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Revised: 10/26/2015] [Accepted: 03/23/2016] [Indexed: 06/05/2023]
Abstract
The study investigated, with an adult sample, the hypothesis that differences between subtypes of ADHD on neuropsychological tests contribute to the poor separation of ADHD and healthy groups on tests of this kind. Groups of ADHD inattentive (n=16) and combined (n=16) subtypes were carefully identified using DSM-IV criteria, and their performance on 14 measures of attention, memory, and executive function (EF) was compared between subtypes and between the two subtypes combined and a group of healthy controls (n=30). Multivariate analyses showed statistically significant differences between the two subtypes, and between the two subtypes combined and the healthy controls. Importantly for the hypothesis, where differences for neuropsychological tests in terms of effect sizes between subtypes were largest, the differences in effect sizes between the two groups combined and controls were smallest (r=-0.64, 95% CI [-0.15, -0.87]).
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Affiliation(s)
- Roberta Dobson-Patterson
- School of Applied Psychology and Menzies Health Institute Queensland, Griffith University, Brisbane, Australia
| | - John G O'Gorman
- School of Applied Psychology and Menzies Health Institute Queensland, Griffith University, Brisbane, Australia
| | - Raymond C K Chan
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China
| | - David H K Shum
- School of Applied Psychology and Menzies Health Institute Queensland, Griffith University, Brisbane, Australia.
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Gmehlin D, Fuermaier AB, Walther S, Tucha L, Koerts J, Lange KW, Tucha O, Weisbrod M, Aschenbrenner S. Attentional Lapses of Adults with Attention Deficit Hyperactivity Disorder in Tasks of Sustained Attention. Arch Clin Neuropsychol 2016; 31:343-57. [DOI: 10.1093/arclin/acw016] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/12/2016] [Indexed: 11/13/2022] Open
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Fuermaier ABM, Tucha L, Koerts J, Weisbrod M, Lange KW, Aschenbrenner S, Tucha O. Effects of methylphenidate on memory functions of adults with ADHD. APPLIED NEUROPSYCHOLOGY-ADULT 2016; 24:199-211. [DOI: 10.1080/23279095.2015.1124108] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Anselm B. M. Fuermaier
- Department of Clinical and Developmental Neuropsychology, University of Groningen, Groningen, The Netherlands
| | - Lara Tucha
- Department of Clinical and Developmental Neuropsychology, University of Groningen, Groningen, The Netherlands
| | - Janneke Koerts
- Department of Clinical and Developmental Neuropsychology, University of Groningen, Groningen, The Netherlands
| | - Matthias Weisbrod
- Department of Psychiatry and Psychotherapy, SRH Clinic Karlsbad-Langensteinbach, Karlsbad-Langensteinbach, Germany
- Section for Experimental Psychopathology, Centre for Psychosocial Medicine, University of Heidelberg, Heidelberg, Germany
| | - Klaus W. Lange
- Department of Experimental Psychology, University of Regensburg, Regensburg, Germany
| | - Steffen Aschenbrenner
- Department of Clinical Psychology and Neuropsychology, SRH Clinic Karlsbad-Langensteinbach, Karlsbad-Langensteinbach, Germany
| | - Oliver Tucha
- Department of Clinical and Developmental Neuropsychology, University of Groningen, Groningen, The Netherlands
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Fuermaier ABM, Tucha L, Evans BL, Koerts J, de Waard D, Brookhuis K, Aschenbrenner S, Thome J, Lange KW, Tucha O. Driving and attention deficit hyperactivity disorder. J Neural Transm (Vienna) 2015; 124:55-67. [PMID: 26419597 PMCID: PMC5281661 DOI: 10.1007/s00702-015-1465-6] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Accepted: 09/18/2015] [Indexed: 12/01/2022]
Abstract
Adults with attention deficit hyperactivity disorder (ADHD) suffer from various impairments of cognitive, emotional and social functioning, which can have considerable consequences for many areas of daily living. One of those areas is driving a vehicle. Driving is an important activity of everyday life and requires an efficient interplay between multiple cognitive, perceptual, and motor skills. In the present study, a selective review of the literature on driving-related difficulties associated with ADHD is performed, seeking to answer whether individuals with ADHD show increased levels of unsafe driving behaviours, which cognitive (dys)functions of individuals with ADHD are related to driving difficulty, and whether pharmacological treatment significantly improves the driving behaviour of individuals with ADHD. The available research provides convincing evidence that individuals with ADHD have different and more adverse driving outcomes than individuals without the condition. However, it appears that not all individuals with ADHD are affected uniformly. Despite various cognitive functions being related with driving difficulties, these functions do not appear helpful in detecting high risk drivers with ADHD, nor in predicting driving outcomes in individuals with ADHD, since impairments in these functions are defining criteria for the diagnoses of ADHD (e.g., inattention and impulsivity). Pharmacological treatment of ADHD, in particular stimulant drug treatment, appears to be beneficial to the driving difficulties experienced by individuals with ADHD. However, additional research is needed, in particular further studies that address the numerous methodological weaknesses of many of the previous studies.
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Affiliation(s)
- Anselm B M Fuermaier
- Department of Clinical and Developmental Neuropsychology, University of Groningen, Grote Kruisstraat 2/1, 9712 TS, Groningen, The Netherlands.
| | - Lara Tucha
- Department of Clinical and Developmental Neuropsychology, University of Groningen, Grote Kruisstraat 2/1, 9712 TS, Groningen, The Netherlands
| | - Ben Lewis Evans
- Traffic and Environmental Psychology Group, University of Groningen, Groningen, The Netherlands
| | - Janneke Koerts
- Department of Clinical and Developmental Neuropsychology, University of Groningen, Grote Kruisstraat 2/1, 9712 TS, Groningen, The Netherlands
| | - Dick de Waard
- Traffic and Environmental Psychology Group, University of Groningen, Groningen, The Netherlands
| | - Karel Brookhuis
- Traffic and Environmental Psychology Group, University of Groningen, Groningen, The Netherlands
| | - Steffen Aschenbrenner
- Department of Clinical Psychology and Neuropsychology, SRH Clinic Karlsbad-Langensteinbach, Karlsbad-Langensteinbach, Germany
| | - Johannes Thome
- Department of Psychiatry and Psychotherapy, University of Rostock, Rostock, Germany
| | - Klaus W Lange
- Department of Experimental Psychology, University of Regensburg, Regensburg, Germany
| | - Oliver Tucha
- Department of Clinical and Developmental Neuropsychology, University of Groningen, Grote Kruisstraat 2/1, 9712 TS, Groningen, The Netherlands
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Verhülsdonk S, Hellen F, Höft B, Supprian T, Lange-Asschenfeldt C. Attention and CERAD test performances in cognitively impaired elderly subjects. Acta Neurol Scand 2015; 131:364-71. [PMID: 25352352 DOI: 10.1111/ane.12346] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/08/2014] [Indexed: 12/01/2022]
Abstract
OBJECTIVES Attention plays a fundamental role in cognitive performance and is closely interrelated with all major cognitive domains. In this retrospective study, we correlated different measures of attention with standard cognitive parameters in 85 cognitively impaired elderly individuals presenting with cognitive complaints to a memory clinic. MATERIALS AND METHODS Z-scores of all relevant cognitive parameters of a extended Consortium to Establish a Registry for Alzheimer's disease (CERAD-Plus) neuropsychological battery were correlated with tonic and phasic alertness, inhibition, and divided attention, assessed by a computerized test battery of attention. The pooled sample consisted of 36 patients with the diagnosis of mild AD, 30 patients with mild cognitive impairment, and 19 patients with major depressive disorder. RESULTS Subjects of all diagnostic groups exhibited normal results in all subtests of attention. Reaction times of neither the tonic nor the phasic alertness task were correlated with any parameter of memory and global cognition. However, significant correlations were obtained between reaction times in the alertness tasks and the trail-making tests. Omissions in the divided attention task yielded the strongest correlations with deficits in cognitive performance, particularly in the verbal learning tasks, the Boston naming test, and the trail-making tests. CONCLUSIONS Our data demonstrate the relative independency of the CERAD-Plus on the variability of attention and particularly alertness suggesting its robustness in psychiatric memory clinic settings. Moreover, CERAD-Plus subtests correlated considerably with failure rates in divided attention, suggesting that impairment in divided attention tasks may be early markers of cognitive impairment.
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Affiliation(s)
- S. Verhülsdonk
- Department of Psychiatry and Psychotherapy; Division of Geriatric Psychiatry; Medical Faculty; Heinrich Heine University; Düsseldorf Germany
| | - F. Hellen
- Department of Psychiatry and Psychotherapy; Division of Geriatric Psychiatry; Medical Faculty; Heinrich Heine University; Düsseldorf Germany
| | - B. Höft
- Department of Psychiatry and Psychotherapy; Division of Geriatric Psychiatry; Medical Faculty; Heinrich Heine University; Düsseldorf Germany
| | - T. Supprian
- Department of Psychiatry and Psychotherapy; Division of Geriatric Psychiatry; Medical Faculty; Heinrich Heine University; Düsseldorf Germany
| | - C. Lange-Asschenfeldt
- Department of Psychiatry and Psychotherapy; Division of Geriatric Psychiatry; Medical Faculty; Heinrich Heine University; Düsseldorf Germany
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Sobanski E, Sirtl A, Alm B, Hennig O, Banaschewski T. Neuropsychological Functioning and Psychosocial Outcome in Adults with Attention-Deficit/ Hyperactivity Disorder. ZEITSCHRIFT FUR NEUROPSYCHOLOGIE 2015. [DOI: 10.1024/1016-264x/a000129] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
This study explores the association of neuropsychological functioning with ADHD-symptoms and psychosocial functioning in a clinical sample of 131 adults with ADHD. Neuropsychological functioning was assessed with the computerized Test Battery of Attentional Performance (TAP). Overall psychosocial impairment was assessed with the Global Assessment of Functioning Scale (GAF). Neuropsychological performance was impaired in 39.6 % of the ADHD-patients meeting a predefined impairment criterion of a perfomance reduction of 1.5 standard deviations below normative controls in ≥ 2 TAP-subtests; 28.4 % of the patients showed regular performance in all neuropsychological tests. Severity of neuropsychological impairment was inversely correlated to severity of psychosocial impairment (GAF score; = -.24, p < .001) but not to childhood or adult ADHD symptoms. Overall severity of neuropsychological impairment explained 10 % (p < .05) of variance of psychosocial impairment.
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Affiliation(s)
- Esther Sobanski
- Klinik Psychiatrie und Psychotherapie, Zentralinstitut für Seelische Gesundheit, Klinische Fakultät Mannheim, Universität Heidelberg
- AHG-Klinik für Psychosomatik, Bad Dürkheim
| | - Alexandra Sirtl
- Klinik Psychiatrie und Psychotherapie, Zentralinstitut für Seelische Gesundheit, Klinische Fakultät Mannheim, Universität Heidelberg
| | - Barbara Alm
- Klinik Psychiatrie und Psychotherapie, Zentralinstitut für Seelische Gesundheit, Klinische Fakultät Mannheim, Universität Heidelberg
| | - Oliver Hennig
- Klinik Psychiatrie und Psychotherapie, Zentralinstitut für Seelische Gesundheit, Klinische Fakultät Mannheim, Universität Heidelberg
| | - Tobias Banaschewski
- Klinik für Kinder- und Jugendpsychiatrie und -psychotherapie, Zentralinstitut für Seelische Gesundheit, Klinische Fakultät Mannheim, Universität Heidelberg
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Detection of feigned attention deficit hyperactivity disorder. J Neural Transm (Vienna) 2014; 122 Suppl 1:S123-34. [DOI: 10.1007/s00702-014-1274-3] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Accepted: 07/12/2014] [Indexed: 11/30/2022]
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Mueller AK, Tucha L, Koerts J, Groen Y, Lange KW, Tucha O. Sluggish cognitive tempo and its neurocognitive, social and emotive correlates: a systematic review of the current literature. J Mol Psychiatry 2014; 2:5. [PMID: 25945249 PMCID: PMC4416322 DOI: 10.1186/2049-9256-2-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Accepted: 07/16/2014] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVES Since the elimination of items associated with Sluggish Cognitive Tempo (SCT) during the transition from DSM-III to DSM-IV from the diagnostic criteria of Attention-deficit Hyperactivity Disorder (ADHD), interest in SCT and its associated cognitive as well as emotional and social consequences is on the increase. The current review discusses recent findings on SCT in clinical as well as community based ADHD populations. The focus is further on clinical correlates of SCT in populations different from ADHD, SCT's genetic background, SCT's association with internalizing and other behavioral comorbidities, as well as SCT's association with social functioning and its treatment efficacy. METHOD A systematic review of empirical studies on SCT in ADHD and other pathologies in PsycInfo, SocIndex, Web of Science and PubMed using the key terms "Sluggish Cognitive Tempo", "Cognitive Tempo", "Sluggish Tempo" was performed. Thirty-two out of 63 studies met inclusion criteria and are discussed in the current review. RESULTS/CONCLUSION From the current literature, it can be concluded that SCT is a psychometrically valid construct with additive value in the clinical field of ADHD, oppositional defiant disorder (ODD), internalizing disorders and neuro-rehabilitation. The taxonomy of SCT has been shown to be far from consistent across studies; however, the impact of SCT on individuals' functioning (e.g., academic achievement, social interactions) seems remarkable. SCT has been shown to share some of the genes with ADHD, however, related most strongly to non-shared environmental factors. Future research should focus on the identification of adequate SCT measurement to promote symptom tailored treatment and increase studies on SCT in populations different from ADHD.
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Affiliation(s)
- Anna Katharina Mueller
- />Department of Clinical and Developmental Neuropsychology, University of Groningen, Groningen, the Netherlands
| | - Lara Tucha
- />Department of Clinical and Developmental Neuropsychology, University of Groningen, Groningen, the Netherlands
| | - Janneke Koerts
- />Department of Clinical and Developmental Neuropsychology, University of Groningen, Groningen, the Netherlands
| | - Yvonne Groen
- />Department of Clinical and Developmental Neuropsychology, University of Groningen, Groningen, the Netherlands
| | - Klaus W Lange
- />Department of Experimental Psychology, University of Regensburg, Regensburg, Germany
| | - Oliver Tucha
- />Department of Clinical and Developmental Neuropsychology, University of Groningen, Groningen, the Netherlands
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Whole-body vibration improves cognitive functions of an adult with ADHD. ACTA ACUST UNITED AC 2014; 6:211-20. [DOI: 10.1007/s12402-014-0149-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2013] [Accepted: 07/07/2014] [Indexed: 10/25/2022]
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Musso MW, Gouvier WD. "Why is this so hard?" A review of detection of malingered ADHD in college students. J Atten Disord 2014; 18:186-201. [PMID: 22582347 DOI: 10.1177/1087054712441970] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVE The purpose of this article is to review studies that have investigated malingered ADHD in college students and offer recommendations for assessing effort in clinical evaluations of ADHD in college students. METHOD This article identified and summarized nineteen peer-reviewed, empirical studies published between 2002 and 2011 that investigated malingered ADHD in college students. RESULTS Few of the measures examined proved useful for detecting malingered ADHD. Most self-report questionnaires were not sensitive to malingering. While there is some variability in the usefulness of neuropsychological test failure, profiles between malingerers and individuals with ADHD are too similar to confidently detect malingered ADHD. Failure of three or more symptom validity tests proved most useful at detecting malingered ADHD. CONCLUSION This review suggests that there is substantial need for measures designed specifically for detecting malingered ADHD. Simulators are able to produce plausible profiles on most tools used to diagnose ADHD.
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Utility of cognitive neuropsychological assessment in attention-deficit/hyperactivity disorder. ACTA ACUST UNITED AC 2014; 6:241-8. [DOI: 10.1007/s12402-014-0132-3] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Accepted: 03/04/2014] [Indexed: 11/30/2022]
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Fuermaier ABM, Tucha L, Koerts J, van Heuvelen MJG, van der Zee EA, Lange KW, Tucha O. Good vibrations--effects of whole body vibration on attention in healthy individuals and individuals with ADHD. PLoS One 2014; 9:e90747. [PMID: 24587412 PMCID: PMC3938804 DOI: 10.1371/journal.pone.0090747] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Accepted: 02/06/2014] [Indexed: 01/03/2023] Open
Abstract
OBJECTIVES Most of the current treatment strategies of ADHD are associated with a number of disadvantages which strengthen the need for alternative or additional approaches for the treatment of ADHD. In this respect, Whole Body Vibration (WBV) might be interesting as it was found to have beneficial effects on a variety of physiological measures. The present study explored the effects of WBV on attention of healthy individuals and adults diagnosed with ADHD. METHODS Eighty-three healthy individuals and seventeen adults diagnosed with ADHD participated in the study. WBV treatment was applied passively, while participants were sitting on a chair which was mounted on a vibrating platform. A repeated measure design was employed in order to explore potential effects of WBV treatment on attention within subjects. Attention (i.e. inhibitory control) was measured with a color-word interference paradigm. RESULTS A period of two minutes of WBV treatment had significant beneficial effects of small to medium size on attention of both healthy individuals and adults with ADHD. The effect of WBV treatment on attention did not differ significantly between groups. CONCLUSIONS WBV was demonstrated to improve cognitive performance of healthy individuals as well as of individuals with ADHD. WBV treatment is relatively inexpensive and easy to apply and might therefore be of potential relevance for clinical use. The application of WBV treatment as a cognitive enhancement strategy and as a potential treatment of cognitive impairments is discussed.
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Affiliation(s)
- Anselm B. M. Fuermaier
- Department of Clinical and Developmental Neuropsychology, University of Groningen, Groningen, the Netherlands
| | - Lara Tucha
- Department of Clinical and Developmental Neuropsychology, University of Groningen, Groningen, the Netherlands
| | - Janneke Koerts
- Department of Clinical and Developmental Neuropsychology, University of Groningen, Groningen, the Netherlands
| | - Marieke J. G. van Heuvelen
- Center for Human Movement Sciences, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Eddy A. van der Zee
- Center of Behaviour and Neuroscience, Department of Molecular Neurobiology, University of Groningen, Groningen, the Netherlands
| | - Klaus W. Lange
- Department of Experimental Psychology, University of Regensburg, Regensburg, Germany
| | - Oliver Tucha
- Department of Clinical and Developmental Neuropsychology, University of Groningen, Groningen, the Netherlands
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van Lieshout M, Luman M, Buitelaar J, Rommelse N, Oosterlaan J. Does neurocognitive functioning predict future or persistence of ADHD? A systematic review. Clin Psychol Rev 2013; 33:539-60. [DOI: 10.1016/j.cpr.2013.02.003] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2012] [Revised: 02/09/2013] [Accepted: 02/12/2013] [Indexed: 02/07/2023]
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Doehnert M, Brandeis D, Schneider G, Drechsler R, Steinhausen HC. A neurophysiological marker of impaired preparation in an 11-year follow-up study of attention-deficit/hyperactivity disorder (ADHD). J Child Psychol Psychiatry 2013; 54:260-70. [PMID: 22788246 DOI: 10.1111/j.1469-7610.2012.02572.x] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND This longitudinal electrophysiological study investigated the course of multiple impaired cognitive brain functions in attention-deficit/hyperactivity disorder (ADHD) from childhood to adulthood by comparing developmental trajectories of individuals with ADHD and typically developing controls. METHODS Subjects with ADHD (N = 11) and normal controls (N = 12) diagnosed in childhood [mean age ADHD/CTRL = 10.9 years [SD 1.72]/10.0 years (SD 1.03)] were followed up after 1.1 and 2.4 years, and as young adults [ADHD/CTRL: 21.9 years (SD 1.46)/21.1 years (SD 1.29)]. At all four times, event-related potential (ERP) maps were recorded during a cued continuous performance test (CPT). We focused on residual deficits as adults, and on developmental trajectories (time and time × group effects) for CPT performance and attentional (Cue P300), preparatory (CNV: contingent negative variation) and inhibitory (NoGo P300) ERP components. RESULTS All ERP components developed without significant time × group interactions. Only the CNV remained reduced in the ADHD group, although 8/11 individuals no longer met a full ADHD diagnosis as adults. Cue P300 and NoGo P300 group differences became nonsignificant in early adulthood. The CNV parameters correlated with reaction time (RT) and RT-SD. Perceptual sensitivity improved and the groups' trajectories converged with development, while RT-SD continued to be elevated in adult ADHD subjects. CONCLUSIONS Attentional and preparatory deficits in ADHD continue into adulthood, and the attenuated CNV appears to reflect a particularly stable ADHD marker. Although some deficit reductions may have gone undetected due to small sample size, the findings challenge those developmental lag models postulating that most ADHD-related deficits become negligible with brain maturation.
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Affiliation(s)
- Mirko Doehnert
- Department of Child and Adolescent Psychiatry, University of Zurich, Zurich, Switzerland.
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Torralva T, Gleichgerrcht E, Lischinsky A, Roca M, Manes F. "Ecological" and highly demanding executive tasks detect real-life deficits in high-functioning adult ADHD patients. J Atten Disord 2013; 17:11-9. [PMID: 22826512 DOI: 10.1177/1087054710389988] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Many adult ADHD patients with a convincing history of real-life executive deficits perform entirely within normal limits or with minimally impaired performance in classical executive tests. The authors assessed a group of high cognitive functioning adult ADHD participants on "ecological" and "highly demanding" executive tasks. METHOD A total of 117 adult ADHD participants were classified as showing either a high-functioning (Hi-ADHD) or a low-functioning (Lo-ADHD) neuropsychological profile based on standard assessment. Their performance was compared with healthy controls (n = 21) on an ecological task of executive function (the hotel task) and computerized tasks of high cognitive demand. RESULTS Lo-ADHD significantly differed from controls on multiple standard neuropsychological variables as well as on the experimental tasks. Hi-ADHD and healthy controls did not differ significantly on any of the standard neuropsychological variables, but a significant difference was found between the groups on measures of the experimental tasks. CONCLUSION Real-life executive dysfunction of patients with ADHD who perform within normal range on standard assessment can be detected with the use of more ecological and highly demanding tasks.
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Thome J, Ehlis AC, Fallgatter AJ, Krauel K, Lange KW, Riederer P, Romanos M, Taurines R, Tucha O, Uzbekov M, Gerlach M. Biomarkers for attention-deficit/hyperactivity disorder (ADHD). A consensus report of the WFSBP task force on biological markers and the World Federation of ADHD. World J Biol Psychiatry 2012; 13:379-400. [PMID: 22834452 DOI: 10.3109/15622975.2012.690535] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
OBJECTIVE Psychiatric "nosology" is largely based on clinical phenomenology using convention-based diagnostic systems not necessarily reflecting neurobiological pathomechanisms. While progress has been made regarding its molecular biology and neuropathology, the phenotypic characterization of ADHD has not improved. Thus, validated biomarkers, more directly linked to the underlying pathology, could constitute an objective measure for the condition. METHOD The task force on biological markers of the World Federation of Societies of Biological Psychiatry (WFSBP) and the World Federation of ADHD commissioned this paper to develop a consensus report on potential biomarkers of ADHD. The criteria for biomarker-candidate evaluation were: (1) sensitivity >80%, (2) specificity >80%, (3) the candidate is reliable, reproducible, inexpensive, non-invasive, easy to use, and (4) confirmed by at least two independent studies in peer-reviewed journals conducted by qualified investigators. RESULTS No reliable ADHD biomarker has been described to date, but some promising candidates (e.g., olfactory sensitivity, substantial echogenicity) exist. A problem in the development of ADHD markers is sample heterogeneity due to aetiological and phenotypic complexity and age-dependent co-morbidities. CONCLUSIONS Most likely, no single ADHD biomarker can be identified. However, the use of a combination of markers may help to reduce heterogeneity and to identify homogeneous subtypes of ADHD.
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Affiliation(s)
- Johannes Thome
- Department of Psychiatry and Psychotherapy, University of Rostock, Rostock, Germany.
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Hauser J, Sontag TA, Tucha O, Lange KW. The effects of the neurotoxin DSP4 on spatial learning and memory in Wistar rats. ACTA ACUST UNITED AC 2012; 4:93-9. [PMID: 22585442 PMCID: PMC3359455 DOI: 10.1007/s12402-012-0076-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2012] [Accepted: 05/01/2012] [Indexed: 11/28/2022]
Abstract
The aim of the present study was to investigate the effect of DSP4-induced noradrenaline depletion on learning and memory in a spatial memory paradigm (holeboard). Since Harro et al. Brain Res 976:209–216 (2003) have demonstrated that short-term effects of DSP4 administration include both noradrenaline depletion and changes in dopamine and its metabolites—with the latter vanishing within 4 weeks after the neurotoxic lesion—the behavioural effects observed immediately after DSP4 administration cannot solely be related to noradrenaline. In the present study, spatial learning, reference memory and working memory were therefore assessed 5–10 weeks after DSP4 administration. Our results suggest that the administration of DSP4 did not lead to changes in spatial learning and memory when behavioural assessment was performed after a minimum of 5 weeks following DSP4. This lack of changes in spatial behaviour suggests that the role of noradrenaline regarding these functions may be limited. Future studies will therefore have to take into account the time-course of neurotransmitter alterations and behavioural changes following DSP4 administration.
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Affiliation(s)
- Joachim Hauser
- Department of Experimental Psychology, University of Regensburg, 93040 Regensburg, Germany
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Wickens JR, Hyland BI, Tripp G. Animal models to guide clinical drug development in ADHD: lost in translation? Br J Pharmacol 2012; 164:1107-28. [PMID: 21480864 DOI: 10.1111/j.1476-5381.2011.01412.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
We review strategies for developing animal models for examining and selecting compounds with potential therapeutic benefit in attention-deficit hyperactivity disorder (ADHD). ADHD is a behavioural disorder of unknown aetiology and pathophysiology. Current understanding suggests that genetic factors play an important role in the aetiology of ADHD. The involvement of dopaminergic and noradrenergic systems in the pathophysiology of ADHD is probable. We review the clinical features of ADHD including inattention, hyperactivity and impulsivity and how these are operationalized for laboratory study. Measures of temporal discounting (but not premature responding) appear to predict known drug effects well (treatment validity). Open-field measures of overactivity commonly used do not have treatment validity in human populations. A number of animal models have been proposed that simulate the symptoms of ADHD. The most commonly used are the spontaneously hypertensive rat (SHR) and the 6-hydroxydopamine-lesioned (6-OHDA) animals. To date, however, the SHR lacks treatment validity, and the effects of drugs on symptoms of impulsivity and inattention have not been studied extensively in 6-OHDA-lesioned animals. At the present stage of development, there are no in vivo models of proven effectiveness for examining and selecting compounds with potential therapeutic benefit in ADHD. However, temporal discounting is an emerging theme in theories of ADHD, and there is good evidence of increased value of delayed reward following treatment with stimulant drugs. Therefore, operant behaviour paradigms that measure the effects of drugs in situations of delayed reinforcement, whether in normal rats or selected models, show promise for the future.
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Sontag TA, Hauser J, Tucha O, Lange KW. Effects of DSP4 and methylphenidate on spatial memory performance in rats. ACTA ACUST UNITED AC 2011; 3:351-8. [PMID: 22002672 PMCID: PMC3220809 DOI: 10.1007/s12402-011-0067-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2011] [Accepted: 09/29/2011] [Indexed: 11/28/2022]
Abstract
In this experiment, we have investigated the spatial memory performance of rats following a central noradrenaline depletion induced by three different doses of the neurotoxin N-(2-chloroethyl)-N-ethyl-2-bromobenzylamine (DSP4) and following administration of three different doses of methylphenidate (MPH). The rats were required to find food pellets hidden on a holeboard. The sole administration of DSP4 induced only minor cognitive deficits. However, the treatment with MPH increased the reference memory error, the impulsivity and the motor activity of the DSP4-treated rats. Since the noradrenergic terminals in a DSP4-treated rat are significantly reduced, the administration of MPH has little effect on the noradrenergic system and increases dopaminergic rather than noradrenergic activity, resulting in an imbalance with relatively high dopaminergic and low noradrenergic activities. It is suggested that a reduction of noradrenaline and an increase of dopamine induce ADHD-related deficits and that the depletion of noradrenaline is not sufficient for an appropriate rat model of ADHD.
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Affiliation(s)
- Thomas A Sontag
- Department of Experimental Psychology, University of Regensburg, 93040, Regensburg, Germany
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Carmona S, Hoekzema E, Ramos-Quiroga JA, Richarte V, Canals C, Bosch R, Rovira M, Soliva JC, Bulbena A, Tobeña A, Casas M, Vilarroya O. Response inhibition and reward anticipation in medication-naïve adults with attention-deficit/hyperactivity disorder: a within-subject case-control neuroimaging study. Hum Brain Mapp 2011; 33:2350-61. [PMID: 21826761 DOI: 10.1002/hbm.21368] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2010] [Revised: 04/15/2011] [Accepted: 05/02/2011] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND Previous research suggests that ADHD patients are characterized by both reduced activity in the inferior frontal gyrus (IFG) during response inhibition tasks (such as the Go-NoGo task), and reduced activity in the ventral striatum during reward anticipation tasks (such as the Monetary-Incentive-Delay [MID] task). However, no prior research has applied either of these paradigms in medication-naïve adults with ADHD, nor have these been implemented in an intrasubject manner. METHODS The sample consisted of 19 medication-naïve adults with ADHD and 19 control subjects. Main group analyses were based on individually defined regions of interest: the IFG and the VStr for the Go-NoGo and the MID task respectively. In addition, we analyzed the correlation between the two measures, as well as between these measures and the clinical symptoms of ADHD. RESULTS We observed reduced bilateral VStr activity in adults with ADHD during reward anticipation. No differences were detected in IFG activation on the Go-NoGo paradigm. Correlation analyses suggest that the two tasks are independent at a neural level, but are related behaviorally in terms of the variability of the performance reaction time. Activity in the bilateral VStr but not in the IFG was associated negatively with symptoms of hyperactivity/impulsivity. CONCLUSIONS Results underline the implication of the reward system in ADHD adult pathophysiology and suggest that frontal abnormalities during response inhibition performance may not be such a pivotal aspect of the phenotype in adulthood. In addition, our findings point toward response variability as a core feature of the disorder.
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Affiliation(s)
- Susana Carmona
- Departament de Psiquiatria i Medicina Legal, Universitat Autònoma de Barcelona, Bellaterra, Spain.
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Rohlf H, Jucksch V, Gawrilow C, Huss M, Hein J, Lehmkuhl U, Salbach-Andrae H. Set shifting and working memory in adults with attention-deficit/hyperactivity disorder. J Neural Transm (Vienna) 2011; 119:95-106. [PMID: 21626411 DOI: 10.1007/s00702-011-0660-3] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2011] [Accepted: 05/14/2011] [Indexed: 11/29/2022]
Abstract
Compared to the high number of studies that investigated executive functions (EF) in children with attention-deficit/hyperactivity disorder (ADHD), a little is known about the EF performance of adults with ADHD. This study compared 37 adults with ADHD (ADHD(total)) and 32 control participants who were equivalent in age, intelligence quotient (IQ), sex, and years of education, in two domains of EF--set shifting and working memory. Additionally, the ADHD(total) group was subdivided into two subgroups: ADHD patients without comorbidity (ADHD(-), n = 19) and patients with at least one comorbid disorder (ADHD(+), n = 18). Participants fulfilled two measures for set shifting (i.e., the trail making test, TMT and a computerized card sorting test, CKV) and one measure for working memory (i.e., digit span test, DS). Compared to the control group the ADHD(total) group displayed deficits in set shifting and working memory. The differences between the groups were of medium-to-large effect size (TMT: d = 0.48; DS: d = 0.51; CKV: d = 0.74). The subgroup comparison of the ADHD(+) group and the ADHD(-) group revealed a poorer performance in general information processing speed for the ADHD(+) group. With regard to set shifting and working memory, no significant differences could be found between the two subgroups. These results suggest that the deficits of the ADHD(total) group are attributable to ADHD rather than to comorbidity. An influence of comorbidity, however, could not be completely ruled out as there was a trend of a poorer performance in the ADHD(+) group on some of the outcome measures.
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Affiliation(s)
- Helena Rohlf
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 13353 Berlin, Germany.
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Training of attention functions in children with attention deficit hyperactivity disorder. ACTA ACUST UNITED AC 2011; 3:271-83. [PMID: 21597880 PMCID: PMC3158847 DOI: 10.1007/s12402-011-0059-x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2010] [Accepted: 05/06/2011] [Indexed: 11/01/2022]
Abstract
Pharmacological treatment of children with ADHD has been shown to be successful; however, medication may not normalize attention functions. The present study was based on a neuropsychological model of attention and assessed the effect of an attention training program on attentional functioning of children with ADHD. Thirty-two children with ADHD and 16 healthy children participated in the study. Children with ADHD were randomly assigned to one of the two conditions, i.e., an attention training program which trained aspects of vigilance, selective attention and divided attention, or a visual perception training which trained perceptual skills, such as perception of figure and ground, form constancy and position in space. The training programs were applied in individual sessions, twice a week, for a period of four consecutive weeks. Healthy children did not receive any training. Alertness, vigilance, selective attention, divided attention, and flexibility were examined prior to and following the interventions. Children with ADHD were assessed and trained while on ADHD medications. Data analysis revealed that the attention training used in the present study led to significant improvements of various aspects of attention, including vigilance, divided attention, and flexibility, while the visual perception training had no specific effects. The findings indicate that attention training programs have the potential to facilitate attentional functioning in children with ADHD treated with ADHD drugs.
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Detrimental effects of gum chewing on vigilance in children with attention deficit hyperactivity disorder. Appetite 2010; 55:679-84. [DOI: 10.1016/j.appet.2010.10.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2010] [Revised: 09/07/2010] [Accepted: 10/01/2010] [Indexed: 11/20/2022]
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Valo S, Tannock R. Diagnostic Instability ofDSM–IVADHD Subtypes: Effects of Informant Source, Instrumentation, and Methods for Combining Symptom Reports. JOURNAL OF CLINICAL CHILD AND ADOLESCENT PSYCHOLOGY 2010; 39:749-60. [DOI: 10.1080/15374416.2010.517172] [Citation(s) in RCA: 92] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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