Polyunsaturated Fatty Acids (PUFA) Status and Cognitive Function in Healthy Young Adults
The Relationship Between Serum PUFAs and Cognitive Function in Healthy Young Adults
Descripción general del estudio
Estado
Estado
Condiciones
Condiciones
Tipo de estudio
Tipo de estudio
Inscripción (Actual)
Inscripción
Contactos y Ubicaciones
Ubicaciones de estudio
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Tyne and Wear
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Newcastle upon Tyne, Tyne and Wear, Reino Unido, NE1 8ST
- Northumbria University
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Criterios de participación
Criterio de elegibilidad
Criterio de elegibilidad
Edades elegibles para estudiar
Acepta Voluntarios Saludables
Géneros elegibles para el estudio
Método de muestreo
Población de estudio
Descripción
Inclusion Criteria:
- Male/Female
- 18-35 years
- Healthy
- No herbal supplements/prescription medications (excl. contraceptive pill)
- Non smoker
- Native English speaker
Exclusion Criteria:
- BMI ≥ 30
Plan de estudios
¿Cómo está diseñado el estudio?
Detalles de diseño
¿Qué mide el estudio?
Medidas de resultado primarias
Medidas de resultado primarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
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Simple Reaction Time (Attention)
Periodo de tiempo: Single visit
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The participant was instructed to press the 'space bar' on the laptop keyboard as quickly as possible every time an upwards pointing arrow appeared on screen.
Fifty stimuli were presented with an inter-stimulus duration that varied randomly between 1 and 3.5 seconds.
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Single visit
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Choice Reaction Time (Attention)
Periodo de tiempo: Single visit
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An arrow appeared on the screen pointing to the left or to the right.
Participants responded with a left or right key press corresponding to the direction of the arrow.
There was a randomly varying inter-stimulus interval of between 1 and 3 seconds for a total of fifty stimuli.
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Single visit
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Four Choice Reaction Time (Attention)
Periodo de tiempo: Single visit
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A visual representation of the four direction arrow keys of a standard keyboard was presented on screen.
The arrows 'lit up' at random on screen until the corresponding key press was made.
In all, each arrow was the target stimulus 12 times, forming a total of 48 stimuli for this task in all.
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Single visit
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Numeric Working Memory (Working Memory)
Periodo de tiempo: Single visit
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Single visit
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Alphabetic Working Memory (Working Memory)
Periodo de tiempo: Single visit
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Five random letters (A-Z) were presented sequentially for the participant to hold in memory.
This was followed by a series of 30 probe digits (15 targets and 15 distractors) for each of which the participant indicated whether or not it had been in the original series by a simple key press.
The task consisted of 3 separate trials.
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Single visit
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Corsi Blocks Span (Spatial Working Memory)
Periodo de tiempo: Single visit
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In this task nine identical blue squares appeared on screen in non-overlapping random positions.
A set number of blocks changed colour from blue to red in a randomly generated sequence.
Participants were instructed to repeat the sequence by clicking on the blocks using the mouse and cursor.
The task was repeated five times at each level of difficulty.
The sequence span increased from 4, until the participant could no longer correctly recall the sequence, resulting in a span measure of nonverbal working memory, calculated by averaging the level of the last five correctly completed trials.
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Single visit
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3-back Task (Working Memory)
Periodo de tiempo: Single visit
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A continuous string of letters (upper and lower case; inter-stimulus interval of 2.5 seconds) was presented; 45 letters in total with 15 target pairs.
For each stimulus, participants were instructed to indicate whether this was the same letter that appeared three letters before.
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Single visit
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Immediate Word Recall (Episodic Memory)
Periodo de tiempo: Single visit
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A unique set of fifteen words is presented.
Words were selected at random from a large bank of words derived from the MRC Psycholinguistic Database matched for word length, frequency, familiarity and concreteness.
Stimulus duration was one second, as was the inter-stimulus duration.
Following word presentation, the participant was allowed 60 seconds to write down as many of the words as possible.
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Single visit
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Delayed Word Recall (Episodic Memory)
Periodo de tiempo: Single visit
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The participant was again given 60 seconds to write down as many of the words presented previously as possible.
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Single visit
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Word Recognition (Episodic Memory)
Periodo de tiempo: Single visit
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The original 15 words plus 15 distractor words were presented one at a time in a random order.
For each word the participant indicated whether or not it was included in the original list of words by pressing appropriate 'yes' and 'no' keys as quickly as possible.
Stimuli remained on screen until an appropriate response had been made.
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Single visit
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Medidas de resultado secundarias
Medidas de resultado secundarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
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Depression, Anxiety and Stress Scale (DASS)
Periodo de tiempo: Single visit-90 minutes
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The DASS is a set of three self-report scales designed to measure the negative emotional states of depression, anxiety and stress.
Each of the three DASS scales contains 14 items.
Subjects are asked to use 4-point (0-3) severity/frequency scales to rate the extent to which they have experienced each state over the past week.
Scores for Depression, Anxiety and Stress (0-42) are calculated by summing the scores for the relevant items, with higher scores indicating higher incidence of negative emotional symptoms.
A total score can be derived by adding scores from each of the subscales (0-126).
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Single visit-90 minutes
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Colaboradores e Investigadores
Patrocinador
Patrocinador
Publicaciones y enlaces útiles
Fechas de registro del estudio
Fechas importantes del estudio
Inicio del estudio
Inicio del estudio
Finalización primaria (Actual)
Finalización primaria
Finalización del estudio (Actual)
Finalización del estudio
Fechas de registro del estudio
Enviado por primera vez
Enviado por primera vez
Primero enviado que cumplió con los criterios de control de calidad
Primero enviado que cumplió con los criterios de control de calidad
Publicado por primera vez (Estimar)
Publicado por primera vez
Actualizaciones de registros de estudio
Última actualización publicada (Estimar)
Última actualización publicada
Última actualización enviada que cumplió con los criterios de control de calidad
Última actualización enviada que cumplió con los criterios de control de calidad
Última verificación
Última verificación
Más información
Términos relacionados con este estudio
Palabras clave
Términos MeSH relevantes adicionales
Otros números de identificación del estudio
Otros números de identificación del estudio
- 16N3
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