Functional clustering of dendritic activity during decision-making.
Elife
; 82019 10 30.
Article
en En
| MEDLINE
| ID: mdl-31663507
ABSTRACT
The active properties of dendrites can support local nonlinear operations, but previous imaging and electrophysiological measurements have produced conflicting views regarding the prevalence and selectivity of local nonlinearities in vivo. We imaged calcium signals in pyramidal cell dendrites in the motor cortex of mice performing a tactile decision task. A custom microscope allowed us to image the soma and up to 300 µm of contiguous dendrite at 15 Hz, while resolving individual spines. New analysis methods were used to estimate the frequency and spatial scales of activity in dendritic branches and spines. The majority of dendritic calcium transients were coincident with global events. However, task-associated calcium signals in dendrites and spines were compartmentalized by dendritic branching and clustered within branches over approximately 10 µm. Diverse behavior-related signals were intermingled and distributed throughout the dendritic arbor, potentially supporting a large learning capacity in individual neurons.
Palabras clave
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Células Piramidales
/
Toma de Decisiones
/
Corteza Motora
/
Red Nerviosa
Tipo de estudio:
Risk_factors_studies
Límite:
Animals
Idioma:
En
Revista:
Elife
Año:
2019
Tipo del documento:
Article
País de afiliación:
Estados Unidos