Artigos científicos, teses e dissertações
Publicados nas melhores instituições de ensino

A hypothesis to explain how the sensory cortices respond in the appropriate sensory mode

How does an area of sensory cortex recognize the specific nature of the sensory mode of the stimulus that arrives from the peripheral sensory receptor, when nerve impulses are only all-or-nothing action potentials? Work in animals has shown that an area of sensory cortex can l...

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Studies of sensory conductions. Comparison of latencies of orthodromic and antidromic sensory potentials.

Latencies of orthodromic and antidromic sensory potentials were compared in 16 normal median nerves. Peak latency was longer in the antidromic sensory response in every case. The peak latency of the antidromic sensory response depended on the distance between the recording electr...

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AUTISM: A SENSORY NATURE DISORDER? / AUTISMO: UM TRANSTORNO DE NATUREZA SENSORIAL?

The diagnosis of autism is based on a triad of impairments that includes communication problems, social impairments and repetitive and restricted patterns of behaviors, interests and activities. Although this diagnosis criterion does not make reference to sensory impairments, evi...

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Some rat sensory neurons in culture express characteristics of differentiated pain sensory cells.

Sensory neurons were dissociated from trigeminal ganglia or from dorsal root ganglia of rats, grown in culture, and examined for expression of properties of pain sensory cells. Many sensory neurons in culture are excited by low concentrations of capsaicin, reportedly a selective ...

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A model for sensory adaptations of the visual system in squint.

Sensory adaptations to squint are considered in the light of present knowledge of the visual sensory system. A model to assist our understanding of the clinical presentation of sensory adaptation is proposed. Suppression and abnormal correspondence are considered as anomalies of ...

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Abnormal sensory integration affects balance control in hemiparetic patients within the first year after stroke

OBJECTIVE: Impairments in balance can be a consequence of changes in the motor, sensory, and integrative aspects of motor control. Abnormal sensory reweighting, i.e., the ability to select the most appropriate sensory information to achieve postural stability, may contribute to b...

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"Chronic sensory demyelinating neuropathy": chronic inflammatory demyelinating polyneuropathy presenting as a pure sensory neuropathy.

The clinical electrophysiological and histological features of 10 cases of "chronic sensory demyelinating neuropathy" (CSDN) are reported. This entity is characterised by: 1) subacute or chronic progression; 2) pure sensory neuropathy; 3) high spinal fluid protein in the majority...

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Sensory Processing in Schizophrenia: Neither Simple nor Intact

This special issue focuses on the theme of sensory processing dysfunction in schizophrenia. For more than 50 years, from approximately the time of Bleuler until the early 1960s, sensory function was considered one of the few preserved functions in schizophrenia (Javitt1). Fortuna...

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Sensory processing patterns, coping strategies, and quality of life among patients with unipolar and bipolar disorders

Objective: To compare sensory processing, coping strategies, and quality of life (QoL) in unipolar and bipolar patients; to examine correlations between sensory processing and QoL; and to investigate the relative contribution of sociodemographic characteristics, sensory processi...

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Sensory processing abilities of children with ADHD

OBJECTIVE: To assess and compare the sensory processing abilities of children with Attention Deficit/Hyperactivity Disorder (ADHD) and children without disabilities, and to analyze the relationship between sensory processing difficulties and behavioural symptoms presented by ch...

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Sensory characteristics of structured guava (Psidium guajava): comparison of optimized descriptive profile, cata and sensory acceptance methods

Abstract This work aimed a sensory characteristics of structured guava elaborated with hydrocolloids agar and combinations of LA and HA gellan. The methods used were Optimized Descriptive Profile (ODP), CATA and Sensory Acceptance Tests. For the ODP, 18 semi-trained judges select...

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Large and small fibre type sensory dysfunction in patients with cancer.

Quantitative sensory testing was used to assess the prevalence of sensory dysfunction in patients with cancer, carefully screened for other risk factors for neuropathy. Large fibre type sensory function was evaluated using vibration threshold (VT) determinations while small fibre...

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Ratio between the amplitude of sensory evoked potentials at the wrist in both hands of left-handed subjects.

Maximum sensory conduction velocity, duration and amplitude of the sensory evoked potentials at the wrist on stimulating digits 1, 2, 3 and 5, were determined bilaterally in 21 left-handed subjects with an age range from 6 to 47 years. The amplitude of the sensory evoked potentia...

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Amyotrophic lateral sclerosis with sensory neuropathy: part of a multisystem disorder?

Sensory involvement is thought not to be a feature of amyotrophic lateral sclerosis (ALS). However, in the setting of a specialist motor neuron disease clinic, we have identified five patients with sporadic ALS and a sensory neuropathy for which an alternative cause could not be ...

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Findings on sensory deficits in autism: implications for understanding the disorder

Among the many lines of research related to autism, investigations of sensory dysfunction have recently gained attention. The objective of this article is to briefly review the main findings of sensory deficits in autism, raise possibilities of early identification research in th...

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Sensory conduction of the sural nerve in polyneuropathy1

Using surface electrodes, sensory nerve action potentials (SAP) have been recorded in the proximal segment (mid-calf to lateral malleolus) and the distal segment (lateral malleolus to toe 5) of the sural nerve and in the median nerve in 79 control subjects. The values obtained fo...

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When is sensorimotor stroke a lacunar syndrome?

Forty five patients with clear sensorium and no neurological deficits other than unilateral motor and sensory impairment underwent computed tomography (CT). Twenty patients had sensorimotor stroke with impairment of all sensory modalities (type 1). Eight had only impairment of no...

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Long-term memory in Aplysia modulates the total number of varicosities of single identified sensory neurons.

The morphological consequences of long-term habituation and sensitization of the gill withdrawal reflex in Aplysia california were explored by examining the total number of presynaptic varicosities of single identified sensory neurons (a critical site of plasticity for the bioche...

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A controlled trial of the retraining of the sensory function of the hand in stroke patients.

A controlled trial of retraining of the sensory function of the hand was undertaken in hemiplegic patients after the period of spontaneous recovery. Twenty hemiplegic patients with sensory deficit in the hand, two or more years after stroke, received systematic retraining three t...

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A controlled study of sensory tics in Gilles de 1a Tourette syndrome and obsessive-compulsive disorder using a structured interview.

OBJECTIVE: To determine the prevalence and characteristics of sensory tics in the Gilles de la Tourette syndrome (GTS), and a matched population of patients with obsessive-compulsive disorder (OCD) using a structured assessment. METHODS: 50 subjects each of GTS, OCD, and healthy ...

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Electrophysiological aspects of sensory conduction velocity in healthy adults. 2. Ratio between the amplitude of sensory evoked potentials at the wrist on stimulating different fingers in both hands.

The normal ratio between the amplitude of the sensory evoked potential (SEP) at the wrist on stimulating digits 1, 2, 3, and 5 was determined in 44 healthy adult subjects. The first digit had the larger amplitude, and the fifth digit the smallest SEP. The amplitude expresses the ...

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