Video Experimental Relacionado
Updated: Jul 16, 2026
11:30
Brain Imaging Investigation of the Neural Correlates of Emotional Autobiographical Recollection
Published on: August 26, 2011
Los alelos comunes de Kibra están asociados con el rendimiento de la memoria humana.
Andreas Papassotiropoulos1, Dietrich A Stephan, Matthew J Huentelman
1Division of Psychiatry Research, University of Zurich, Zurich 8057, Switzerland. papas@bli.unizh.ch
Science (New York, N.Y.)
|October 21, 2006
Resumen
Los investigadores identificaron la variante del gen KIBRA asociada con el rendimiento de la memoria humana. Esta proteína cerebral juega un papel en la recuperación de la memoria, como lo demuestran los estudios de imágenes de resonancia magnética funcional en individuos cognitivamente normales.
Área de la Ciencia:
- La neurociencia es la neurociencia.
- Genética La genética.
- Psicología Cognitiva Psicología cognitiva.
Sus antecedentes:
- La memoria humana está influenciada por múltiples genes, lo que la convierte en un complejo rasgo poligénico.
- La identificación de factores genéticos específicos que contribuyen a la función de la memoria es crucial para comprender las capacidades cognitivas.
Objetivo del estudio:
- Para llevar a cabo una pantalla de todo el genoma para identificar las variantes genéticas asociadas con el rendimiento de la memoria humana.
- Para investigar el papel del gen KIBRA en la función de la memoria.
Principales métodos:
- Estudio de asociación de todo el genoma (GWAS) en tres cohortes independientes de individuos cognitivamente normales.
- Análisis de la expresión génica en los tejidos cerebrales.
- Imágenes de resonancia magnética funcional (IRMf) durante tareas de recuperación de la memoria.
Principales resultados:
- Un locus genómico específico que codifica el gen KIBRA se asoció significativamente con el rendimiento de la memoria en todas las cohortes.
- La expresión génica de KIBRA se detectó en regiones cerebrales críticas para la memoria.
- fMRI reveló diferencias dependientes del alelo KIBRA en la activación del hipocampo durante el recuerdo de la memoria.
Conclusiones:
- El gen KIBRA está implicado en el rendimiento de la memoria humana.
- KIBRA probablemente influye en la memoria a través de su papel en la función del hipocampo durante la recuperación de la memoria.
Más Videos Relacionados
Videos de Conceptos Relacionados
01:26Higher Mental Functions of Brain: Learning and Memory
Memory is one of the most vital higher mental functions of the brain. Memory is closely related to learning because it enables us to retain information and experiences from our past to use them in our present life. It also helps us to remember facts, events, and skills, such as riding a bike or swimming. There are two types of memory — declarative memory, which involves memorizing facts or events, and procedural memory, which enables us to remember how to do something like writing or playing an...
01:30Introduction to Biological Bases of Psychology
Biopsychology serves as a vital bridge connecting the intricate domains of biology and psychology, shedding light on how biological systems influence psychological phenomena. This field scrutinizes the biological substrates of behavior and mental processes, emphasizing the nervous system along with the roles of neurotransmitters, hormones, and genetics. It also incorporates evolutionary perspectives to explain the adaptive nature of mental functions.
The nervous system, the cornerstone of...
The nervous system, the cornerstone of...
01:28Human Genetics
Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
The complex relationship between genetics and psychology is observable through common biological components such...
The complex relationship between genetics and psychology is observable through common biological components such...
01:24Implicit Memories
Implicit memories, also known as non-declarative memories, are long-term memories that function outside of conscious awareness. These memories influence behavior and skills without explicit knowledge. This type of memory is evident in tasks like playing tennis, snowboarding, and texting. Implicit memory has three subsystems: procedural memory, conditioning, and priming. This type of memory is essential in various activities, from everyday tasks to specialized skills.
One key aspect of implicit...
One key aspect of implicit...
01:14Role of Cerebellum and Prefrontal Cortex in Memory
The cerebellum, while traditionally associated with motor control, also plays a crucial role in memory, particularly in procedural memory, which involves learning motor tasks that become automatic through repetition. For example, studies have shown that when the cerebellum is damaged, individuals or animals lose the ability to learn conditioned motor responses, such as the conditioned eye-blink response in classical conditioning experiments with rabbits. This study demonstrates the cerebellum's...
01:21Forgetting
Forgetting is an intrinsic aspect of human memory, characterized by the gradual loss or inaccessibility of information over time. Hermann Ebbinghaus, a pioneering psychologist, extensively studied this phenomenon and formulated the forgetting curve. This curve illustrates that memory loss occurs rapidly immediately after learning and then decelerates over time. Several mechanisms contribute to forgetting, including encoding failure, storage decay, retrieval failure, and interference.
Encoding...
Encoding...