Sensitivity to moral and conventional rules in temporal lobe epilepsy.

OBJECTIVES: Sensitivity to moral and conventional rules (SMCR) is supported by bilateral brain networks and psychosocial input both of which may be altered in temporal lobe epilepsy (TLE). This study evaluated the components of SMCR in patients with TLE, aiming to clarify their preservation and link to psychopathological and cognitive aspects. METHODS: Adult patients with unilateral TLE and healthy controls were evaluated using neuropsychological tests for SMCR, memory, language, and executive functions, the Empathy Questionnaire (EQ), and the Symptom Checklist-90-R (SCL-90-R). RESULTS: The SMCR test items showed good reliability and validity, yielding the Severity and Rules factors distinct from the Executive, Lexical and Memory factors. Patients with right TLE scored worse in moral rules recognition than controls, but this difference was nullified by a significant influence for age and sex. The Severity and Rules factors related to semantic fluency and age and, respectively, TLE side and psychoticism. However, these factors did predict TLE membership. CONCLUSIONS: In adult patients with TLE, the SMCR test reflects a distinct cognitive domain. Conventional rules are well-retained, while moral reasoning may be only affected in right TLE if unfavorable demographics coexist. Although age, TLE side, semantic abilities, and psychoticism cooperate to determine SMCR, impairment of such domain is not a distinctive feature of TLE.

Profile of personality in frontal and temporal lobe epilepsy: A study using the Millon Clinical Multiaxial Inventory-III.

Personality disorders can influence and, along with cognitive deficits, compromise the quality of life of patients with epilepsy. This study evaluated personality traits and disorders in patients with frontal (FLE) or temporal lobe epilepsy (TLE) using the Millon Clinical Multiaxial Inventory-III with the aim to determine prevalent personality profiles. The results demonstrate the presence of particularly pronounced personality traits and disorders with prevalence of histrionic and obsessive-compulsive personality profiles, respectively, in FLE and TLE. These profiles may be related to different effects of pathophysiological and clinical aspects.

Diversified social cognition in temporal lobe epilepsy.

OBJECTIVES: In an integrated model of social cognition (SC), the theory of mind (ToM), the recognition of behavior in social situations (RBSS), empathy, and sensitivity to moral and conventional rules (SMCR) cooperate in generating mental representations of the interpersonal relationships. The aim of this study was to extend our knowledge of the SC of temporal lobe epilepsy (TLE) patients by characterizing its various aspects and predictors. MATERIALS AND METHODS: Fifty adult patients with TLE and 50 healthy controls were assessed using ToM, RBSS and SMCR neuropsychological tests, the Empathy Questionnaire, and the psychopathology Symptoms Check List 90R (SCL90-R). RESULTS: Patients and controls were similar in terms of occupation, income level, age, sex, marital status and the number of family members. Multivariate analysis of variance with demographic variables as the covariates showed that they were similar in SMCR and empathy. The patients, conversely, had lower ToM and RBSS scores, and higher scores on the SCL90-R psychoticism, depression, paranoid ideation, obsessive-compulsive, somatization and anxiety scales. Impaired RBSS was predicted by psychopathological symptoms, income level, schooling and the duration of epilepsy; ToM related to TLE laterality, seizure frequency and epilepsy duration. CONCLUSIONS: In adult patients with TLE, SC is simultaneously partially impaired and partially preserved, and the fact this is associated with clinical, demographic and psychological variables suggests that SC depends on the integrity of the temporal lobe and the interconnected brain regions, as well as psychosocial stimuli. This approach may contribute to clarify the neurobehavioural phenotype of TLE.

The understanding of mental states and the cognitive phenotype of frontal lobe epilepsy.

OBJECTIVE: Previous studies of frontal lobe epilepsy (FLE) have documented different impairments of theory of mind (ToM), while the study of frontal lobe (FL) lesion without seizures has produced inconsistent results. Given the role played by the FLs in ToM, we evaluated this and other functions in patients with FLE with and without FL lesions. The main objective was to clarify the salience of ToM impairment in the cognitive pattern of FLE and its capacity to discriminate these patients from healthy subjects. The effects of FL lesions on ToM were also explored. METHODS: Seventy-five adult patients with FLE (40 cases with FL lesions) were compared with 42 healthy controls. The Faux Pas Task (FPT) and other neuropsychological tests were utilized to assess ToM, reasoning, language, memory, praxis, attention, and executive abilities. RESULTS: The patients obtained lower z scores for the FPT than for other tests. The ToM, Executive, and Verbal factors discriminated patients from healthy subjects. The patients with or without FL lesion showed significant impairments in recognizing and understanding others' epistemic and affective mental states, but adequate capacity to exclude inexistent mental states was retained. In comparison with controls, the patients with FL lesions obtained lower scores for lexical, memory, praxis, attention, and executive functions, whereas those without lesion only showed attention and initiative deficits. Schooling was the major predictor of ToM, whereas the capacity to exclude inexistent mental states was related to seizure onset age and epilepsy duration. Other cognitive functions were related to schooling, age, or FLE laterality. SIGNIFICANCE: Impaired understanding of real mental states is a specific, salient, and discriminating cognitive aspect of FLE. Poor education is a risk factor for ToM deficit, whereas the clinical variables and FL lesions have no impact. These results suggest that impaired ToM may be a marker of FLE neurobehavioral phenotype.

The visuospatial pattern of temporal lobe epilepsy.

PURPOSE: Unlike temporal lobe lesions, temporal lobe epilepsy (TLE) has no definite effects on visuospatial functions. This retrospective study evaluated these functions in patients with TLE, aiming to clarify their relationships to TLE laterality and magnetic resonance imaging (MRI)-detected brain lesions. METHODS: The Raven Colored Progressive Matrices (RCPM), Attentive Matrices (AM), Trail Making Test A (TMTA), Street Completion Test (SCT), Rey Complex Figure Copying (RCFC) and Delayed Reproduction (RCFDR), and Corsi Blocks Span (CBS) and Supraspan Learning (CBSSL) were used to assess different visuospatial functions in 198 patients with TLE and 90 healthy subjects. RESULTS: In 169 patients (83 left), MRI revealed focal temporal lobe lesions [unilateral mesial temporal lobe sclerosis (MTLS) in 88 cases]. The patients with left or right TLE obtained normal scores on the RCPM, AM, TMTA, SCT, and RCFC, but their scores were significantly low on the CBS, CBSSL, and RCFDR. The patients with MTLS obtained lower scores in comparison with the controls and the patients without lesions, whereas those with other lesions obtained low scores only on the CBSSL and those without lesions performed normally. CONCLUSIONS: Temporal lobe epilepsy does not affect nonmemory visuospatial functions but significantly impairs visuosopatial memory and learning. This pattern is independent of TLE laterality, in keeping with a modality-specific memory model. On the contrary, the type of temporal lobe lesion is relevant to the severity of impairment.

Crossed obsessive-compulsive personality disorder and impaired theory of mind in temporal lobe epilepsy.

People with epilepsy often suffer psychiatric symptoms or exhibit maladaptive personality characteristics which can impact them more than seizures. This case illustrates a selective association of a Theory of Mind dysfunction, including an impaired comparison of reality and others' behavior, with an obsessive-compulsive personality disorder in a patient with left temporal lobe epilepsy and crossed cognitive functions. The patient revealed visual memory deficits and impaired interpretation of other people's behavior, mental rigidity, and a tendency to formulate inflexible judgements. Moreover, she shows impairment in understanding and sharing the emotional states of others in reference to herself (Empathic Quotient); her social relations are limited to her parents. Patients with right temporal lobe epilepsy frequently report persistent and rigid actions and thoughts, and this can have substantial psychological and social consequences for everyday life. We suggest that this could be a case of crossed cognitive functions, in particular ToM, and crossed psychobehavioral functions linked to right-hemisphere damage.

Combining drug and music therapy in patients with moderate Alzheimer's disease: a randomized study.

Alzheimer's disease (AD) can impair language, but active music therapy (AMT) and memantine (M) can improve communication. This study aimed to clarify whether adding AMT to M may improve language in comparison with drugs alone in patients with moderate AD on stable therapy with acetylcholinesterase inhibitors (AchEI). Forty-five AD patients treated with stable dose of AchEI were randomized to receive AMT plus M 20 mg/day or M 20 mg/day for 24 weeks. The Severe Impairment Battery-Language (SIB-l), SIB, Mini Mental State Examination, Neuropsychiatric Inventory (NPI), Lubben Social Network Scale, Activities of Daily Living, and Instrumental Activities of Daily Living scores at baseline and 12 and 24 weeks assessed language (primary variable) and overall cognitive, psycho-behavior, social, and functional aspects (secondary variables). The SIB-l showed a stabilization of the baseline condition in both groups, in the absence of between-group differences. The NPI depression and appetite scores significantly improved in the M-AMT group. Moreover, significantly less patients in the M-AMT group than those in the M group showed worsening of the NPI total score. Daily activities, social relationships, and overall cognitive performance did not deteriorate. In patients with moderate AD, AMT added to pharmacotherapy has no further benefits for language in comparison with pharmacotherapy alone. However, this integrated treatment can improve the psycho-behavioral profile.

Expanding the spectrum of cognitive outcomes after temporal lobe epilepsy surgery: A prospective study of theory of mind.

OBJECTIVE: Because temporal lobe epilepsy (TLE) can impair theory of mind (ToM), we examined the effects of anterior temporal lobectomy (ATL) by comparing the preoperative to postoperative ToM course with that of other cognitive functions characteristically impaired in TLE. METHODS: Eighty-five patients with left (n = 39) or right (n = 46) drug-resistant TLE and an age at epilepsy onset of >12 (n = 54) or ≤12 years (n = 31) were evaluated before and 1 year after surgery; 40 healthy controls were assessed at baseline. The participants' recognition and comprehension of faux pas (FPs) or correct rejection of nonexistent FPs was assessed using the Faux Pas task; and their language, memory, and planning were, respectively, assessed using the Boston Naming, Short Story, and Tower of London tests. RESULTS: Baseline ToM was impaired in the patients with left or right TLE in comparison with the controls, and significantly influenced by education and age at seizure onset, with more severe deficits being observed in those with less education and an age at onset of ≤12 years. After ATL, their recognition and comprehension of FPs was unchanged, whereas the rejection of nonexistent FPs improved in the patients with early seizure onset. Education, preoperative ToM, postoperative executive function, and fluid intelligence and the number of antiepileptic drugs predicted postoperative ToM. Postoperative naming and episodic memory were associated with ATL laterality and education, and planning was associated with age at seizure onset and chronological age. SIGNIFICANCE: After ATL, the components of ToM may be unchanged or slightly improved depending on cognitive reserve and age at seizure onset, thus suggesting that ATL does not further aggravate the deficits caused by TLE. Moreover, the course of ToM is distinct from that of other cognitive functions. These findings expand the spectrum of the cognitive phenotypes associated with TLE and ATL, and offer potential elements for individual prognoses.

Theory of mind and epilepsy: what clinical implications?

PURPOSE: Epilepsy can impair theory of mind (ToM), but the clinical significance of such a deficit is unknown. This study evaluated the influence of selective ToM deficits on self-appraisal, coping, and quality of life (QoL) in patients with focal epilepsy. METHODS: Data were collected from 66 patients with temporal or frontal lobe epilepsy, and from 42 healthy controls. The Faux Pas Task (FPT), Multiple Ability Self-report Questionnaire (MASQ), Coping Responses Inventory-Adult (CRI-Adult), and World Health Organization QoL 100 (WHOQoL 100) evaluated ToM, self-rated cognitive abilities, coping to stressful events, and QoL. Different tests and inventories assessed other cognitive functions, depression, and anxiety. KEY FINDINGS: Patients were impaired in the recognition and comprehension of social faux pas. The FPT scores contributed to predict the MASQ, CRI-Adult, and WHOQoL overall scores; the comprehension of others' mental states and interactions score exerted a prominent influence. SIGNIFICANCE: In patients with focal epilepsy, selective ToM deficits may have clinical implications, with specific influence on self-appraisal, coping, and overall QoL. ToM evaluation may contribute in explaining some psychobehavioral difficulties and to plan nonpharmacological treatment.

Blurring in patients with temporal lobe epilepsy: clinical, high-field imaging and ultrastructural study.

Magnetic resonance imaging-positive temporal lobe atrophy with temporo-polar grey/white matter abnormalities (usually called 'blurring') has been frequently reported in patients with temporal lobe epilepsy associated with hippocampal sclerosis. The poor distinction of grey and white matter has been attributed to various causes, including developmental cortical abnormalities, gliosis, myelin alterations, a non-specific increase in temporal lobe water content and metabolic/perfusion alterations. However, there is still no consensus regarding the genesis of these abnormalities and no histopathological proof for a structural nature of magnetic resonance imaging changes. The aim of this study was to investigate the pathological substrate of temporo-polar blurring using different methodological approaches and evaluate the possible clinical significance of the abnormalities. The study involved 32 consecutive patients with medically intractable temporal lobe epilepsy and hippocampal sclerosis who underwent surgery after a comprehensive electroclinical and imaging evaluation. They were divided into two groups on the basis of the presence/absence of temporo-polar blurring. Surgical specimens were examined neuropathologically, and selected samples from both groups underwent high-field 7 T magnetic resonance imaging and ultrastructural studies. At the clinical level, the two groups were significantly different in terms of age at epilepsy onset (earlier in the patients with blurring) and epilepsy duration (longer in the patients with blurring). Blurring was also associated with lower neuropsychological test scores, with a significant relationship to abstract reasoning. On 7 T magnetic resonance image examination, the borders between the grey and white matter were clear in all of the samples, but only those with blurring showed a dishomogeneous signal in the white matter, with patchy areas of hyperintensity mainly in the depth of the white matter. Sections from the patients with blurring that were processed for myelin staining revealed dishomogeneous staining of the white matter, which was confirmed by analyses of the corresponding semi-thin sections. Ultrastructural examinations revealed the presence of axonal degeneration and a significant reduction in the number of axons in the patients with blurring; there were no vascular alterations in either group. These data obtained using different methodological approaches provide robust evidence that temporo-polar blurring is caused by the degeneration of fibre bundles and suggest slowly evolving chronic degeneration with the redistribution of the remaining fibres. The article also discusses the correlations between the morphological findings and clinical data.

Investigating higher-order cognitive functions in temporal lobe epilepsy: cognitive estimation.

Cognitive estimation, an ability to attribute measurements to concrete things, is relevant to adaptive behavior. This study evaluated cognitive estimation in patients with temporal lobe epilepsy (TLE) with the goal of verifying its relationship to temporal lobe damage and age of seizure onset. One hundred and eight patients with drug-resistant TLE and 51 healthy controls were evaluated using the Cognitive Estimation Task (CET), which requires simple and complex estimations providing the Total and Bizarreness scores. Different tests assessed reasoning, attention, executive, visuospatial, and lexical-semantic abilities. Patients with right TLE had earlier age of seizure onset than patients with left TLE and lower education than controls. Compared with controls, both patient groups obtained worse CET Total and Bizarreness scores, but only patients with right TLE were significantly impaired. Patients with seizure onset before age 12 showed worse scores than patients with later seizure onset irrespective of the side of TLE. The CET Total and Bizarreness scores were predicted by age of seizure onset and semantic fluency; the Bizarreness score also related to education, chronological age, and visual attention. Results highlight the complexity of the cognitive pattern associated with TLE. Cognitive estimation deficit primarily reflects early age of seizure onset and semantic difficulties. An involvement of visual mental operations mediated by the right hemisphere may accentuate the deficit, while cognitive reserve may play a protective role.

Theory of mind in frontal and temporal lobe epilepsy: cognitive and neural aspects.

PURPOSE: Theory of mind (ToM) is an important prerequisite to social behavior. This study evaluated ToM in patients with temporal (TLE) or frontal lobe epilepsy (FLE) aiming to determine the cognitive aspects, severity, and pathophysiologic mechanisms of ToM impairment in focal epilepsy. METHODS: One hundred thirty-eight patients with TLE (n = 109) or FLE (n = 29) and 69 healthy subjects underwent the Faux Pas task (FPT), which evaluates the recognition and comprehension of others' mental states, and neuropsychological tests for other cognitive functions. KEY FINDINGS: Factor analysis of all test scores yielded two ToM factors (Recognizing faux pas, FP; Excluding nonexistent FP) distinct from the Control, Language, Matching, and Praxis factors. With respect to healthy subjects, both TLE and FLE patients showed correct exclusion of nonexistent FPs but significantly lower recognition and comprehension of real FPs. FLE patients were also impaired with respect to TLE patients. In the whole patient group, schooling and group membership predicted ToM impairment. In FLE patients, the comprehension of mental states was predicted by disease duration, whereas TLE patients' comprehension of affects and intentions was associated with early age of seizure onset and medial temporal lobe sclerosis (MTLS). SIGNIFICANCE: Focal epilepsy impairs advanced ToM abilities. FLE may affect online performances owing to long-lasting dysfunctions of the prefrontal areas. MTLS may provoke selective ToM deficits due to medial temporal damage, prefrontal dysfunctions, or early interference with cognitive development. Future studies are needed to determine the implications of ToM impairment on behavior and quality of life.

Self-rated and assessed cognitive functions in epilepsy: impact on quality of life.

AIM OF THE STUDY: To compare the effects of perceived and assessed cognitive functions on quality of life (QoL) in patients with epilepsy (PWE). METHODS: The study analyzed the data from a series of PWE who compiled the Quality of Life in Epilepsy-89 Inventory (QOLIE-89) and the Multiple Ability Self-Report Questionnaire (MASQ) for QoL and perceived cognitive abilities, respectively. The State-Trait Anxiety and Beck Depression inventories were used to assess mood. Neuropsychological tests evaluated abstract reasoning, attention, conceptual-motor tracking, constructional praxis, language, verbal and non-verbal memory, abstraction, category shifting, verbal fluency, and visual-spatial abilities. RESULTS: The QOLIE-89 overall score was predicted by the Mood and Attention and Executive Functions factors and MASQ scores, explaining 38, 6, and 4% of its variance, while disease duration, seizure frequency, and schooling determined 16%. The QOLIE-89 Psychosocial, Cognitive, and Physical Performance sub-domains related to mood. The Cognitive and Physical Performance factors also related to the MASQ and Attention and Executive Functions factor scores, respectively. CONCLUSIONS: In PWE, self-rated and assessed cognitive deficits may influence QoL, explaining 10% of its variance irrespective from mood and clinical variables. Treating cognitive deficits and their perception may help improve QoL.