The Biased Competition Model suggests that stimuli matching the contents of working memory increase the likelihood that memorymatching items will be attended. According to this account, the representations in working memory create an involuntary capture of attention toward memory-matching items in the visual field. This influential assumption proposed by the biased competition model has been explored in a number of studies, showing that the contents of working memory exert an automatic bias in favor of memory matching items. These studies showed that active maintenance of objects in working memory automatically shift attention toward the memory matching-object and produce a negative early lateralized event related potential (ERP), the N2pc, toward the side of visual field where the memorized item appeared. This component, the N2pc is an important tool to investigate the allocation of attention by working memory representations, especially for the activity the activity that is specific to the hemisphere which is contralateral with respect to the hemifield containing e.g. the to-be-remembered items could be measured. This characteristic of the N2pc facilitates measuring the general direction of attention with fine-grained temporal resolution. Therefore, the N2pc could be used as an index to describe the lateralization effect of memorized items on attention related studies.

Most of the patients with temporal lobe epilepsy suffer from memory decline following anterior temporal lobectomy (ATL). Studies examining memory decline following ATL show that post operative memory decline can be predicted in advance through the pre operative determination of memory lateralisation. Therefore, preoperative memory lateralisation plays a crucial role for epileptic surgery. Recent research suggests that instead of WADA test which is known as an invasive and high-risk operation, functional MRI can be used as a non-invasive and repeatable method to lateralize memory in the brain and to predict post operative memory decline. The aim of this article is to review the utility of fmri in prediction of post operative memory decline and to summarize the results of recent memory lateralisation studies using fmri.

Communication deficits resulting from aphasia can negatively impact stroke survivors’ social life. It has been reported that patients with severe non-fluent aphasia are better at singing lyrics than speaking the same words. Based on lesion studies, it is generally proposed that the right hemisphere is dominant especially for melody production. We present a 28-year-old woman with non-fluent aphasia as the result of a left hemisphere ischemic stroke involving mainly the superior division of the middle cerebral artery, and classified as having Broca’s aphasia. She was taken into melodic intonation therapy with speech therapy. Singing is accessible and enjoyable for many people with aphasia and melodic intonation therapies may facilitate recovery in such non-fluent aphasic patients.

Objective: To demonstrate the efficacy of EMDR in complex multiple psychological trauma after failed drug treatment from selective serotonin reuptake inhibitor (SSRI) in a diagnosed case of post traumatic stress disorder (PTSD). Material and method: Single participant of this case study, a sitting session judge of judicial governmental scaffold reported to this mental health tertiary care facility at his own accord with features of intense anxiety, depression, maladjustment issues and posttraumatic stress for a duration of several months. As a partial responder to full trial of SSRI he was enrolled for EMDR therapy to address his symptoms of intense anxiety, panic attacks, being overwhelmingly fearful, depressed, low self-esteem, inappropriate feelings of guilt, flashbacks, avoidance, nightmares, hyper-arousal and inability to perform as a judicial head in active war stricken area of northern Pakistan. Complete psychiatric evaluation was carried out and after the discontinuation of SSRIs he was scored on Impact of Event Scale (IES). He fulfilled the diagnostic criteria for PTSD as evaluated by the English version of the PTSD module of the Structured Clinical Interview for DSM-IV administered once before commencement of EMDR. Safe place of the client was established and 8 staged protocol of EMDR was started with him. Multiple EMDR sessions were conducted. Result: The case presented in this paper had multiple psychological trauma forms and failed drug treatment and yet it was observed that EMDR provided marked improvement in all the domains of his deficits and this was at a prompt speed as compared to cognitive behavioural therapy (CBT) which usually takes longer duration of therapy to achieve similar results. Conclusion: EMDR provides marked improvement in all domains of complex mental trauma and traumatic memories. Improvement attained was prompt and enduring as compared to other forms of established therapies and drug treatment indicating permanent changes happening at neurobiological levels of brain.

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Peripheric edema could be caused by various medical conditions as well as pharmacologic agents such as antihypertensives, nonsteroidal antiinflamatory drugs, endocrine agents and immunotherapies. Olanzapine is an atypical antipsychotic that is widely prescribed for the treatment of schizophrenia and bipolar affective disorder. Most common adverse reactions of olanzapine are weight gain, postural hypotension, constipation, dizziness, akathisia, sedation. Peripheral edema was reported as an infrequent side effect, which affected 3% of the olanzapine treated patients. In this report, we aim to draw attention of psychiatrists on this rare adverse effect by presenting a 56-year-old case, who applied to our hospital with severe depressive and obsessive-compulsive symptoms and hospitalized because of suicide risk. Before psychiatric admission, he wasn’t taking any medication. He was diagnosed as major depression with psychotic features and obsessive-compulsive disorder. He was started on olanzapine 10 mg/day, quetiapine 300 mg/day and fluoxetine 40 mg/day. Two weeks after initiation of olanzapine, he was found to have bilateral pedal edema without ulceration and temperature change but minimal redness was observed. He had no history suggestive of cardiac, renal and liver dysfunction or allergic reaction against to any drug that could explain his existing edema. Possible medical conditions which may cause edema were ruled out by laboratory tests and physical examination. Olanzapine was stopped immediately and the therapy was modified to risperidone 1 mg/day. After discontinuation of olanzapine, edema was gradually resolved within two weeks. Because olanzapine associated edema has been seen rarely, it could be overlooked by psychiatrists in comparison to its more common side effects. Although it shows self-limited and benign course, patients may feel discomfort and their compliance to treatment may decrease. Also, it may interfere with differential diagnosis of other medical conditions which may cause edema. In conclusion, we suggest that patients should be observed carefully for edema during olanzapine treatment.

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Cerebellum called as the “little brain” .The cerebellum regulates various functions like motor coordination, equilibrium and muscle tone because of its connections with other parts of the brain as well as other parts of the body. Whether the fastigial nucleus of the rat cerebellum plays any role in behavior, reference and working memory forms the focus of the present study. The fastigial nucleus as part of spino-cerebellum of Wistar albino rat was unilaterally (left side) destroyed by electrolytic lesion using stereotaxic procedures and the behavior, learning and memory were analyzed by using open field, elevated plus maze and eight arm radial mazes on 10th and also 15th day after the lesion along with controls as well as with sham operated animals. The alterations in behavior were only observed on the 10th day but not in 15th day. There was no alteration was observed in radial maze among the groups indicated that cerebellum has no role in memory process. The changes perceived in behavior on 10th day may be due the inflammation or reduced metabolism in the damaged areas followed which may recovered on 15th day as inflammation subsides and the metabolism is normalized. These results indicate that fastigial nucleus is not playing any role in either behavior or memory.

Several studies suggest that memory suppression in humans occur as an active process of executive control, mediated by regions of prefrontal cortex, which is a substrate for ovarian hormones. However the effect of ovarian hormones on this process is not known. In order to address this question, we utilized the quantitative analysis of ovarian hormones in combination with the procedure of a memory control model, the think (T) /no think (NT) paradigm in a within-subject design study. We compared the rate of memory control between the follicular (low estrogen and progesterone) and mid-luteal (high estrogen and progesterone) phases of regularly cycling healthy women. Our data demonstrate that during midluteal phase, 63.6 % of subjects are able to ‘suppress’ or actively forget (significantly less % recall below the baseline) previously learned word pairs in the ‘NT condition; i.e., not to think the target word associated with the cue word’. However during the follicular phase there was no effect of ‘NT condition’ on the active forgetting of word pairs below the baseline as assessed by the memory test applied after the T/NT procedure. Thus, our results indicate that ovarian hormones are associated with the process of memory control.