Related Experiment Video
Updated: Jul 19, 2026
04:44
Inter-Brain Synchrony in Open-Ended Collaborative Learning: An fNIRS-Hyperscanning Study
Published on: July 21, 2021
Early-phase of learning enhances communication between brain hemispheres
Anita Cybulska-Klosowicz1, Malgorzata Kossut
1Department of Molecular and Cellular Neurobiology, Nencki Institute, 3 Pasteur St., 02-093 Warsaw, Poland.
The European Journal of Neuroscience
|September 22, 2006
Summary
Early in learning, whisker stimulation activates both sides of the mouse brain. As learning progresses, only the opposite brain side activates, suggesting enhanced interhemispheric communication during heightened alertness.
Area of Science:
- Neuroscience
- Somatosensory System
- Learning and Memory
Background:
- Somatosensory information typically travels contralaterally.
- Interhemispheric connections allow for interaction between brain hemispheres.
- Alertness and attention influence neuronal pathway responsiveness during learning.
Purpose of the Study:
- To investigate brain activation patterns during classical conditioning.
- To examine the role of interhemispheric interactions in early learning stages.
Main Methods:
- Functional brain mapping using [14C]2-deoxyglucose (2DG) autoradiography in mice.
- Classical conditioning paradigm involving unilateral whisker stimulation paired with unconditioned stimuli.
- Comparison of brain activity during the first and third conditioning sessions.
Main Results:
- Initial whisker stimulation led to increased 2DG uptake in the barrel cortex of both hemispheres.
- After repeated conditioning, barrel cortex activation became solely contralateral.
- Unilateral whisker stimulation during early Pavlovian conditioning activates primary sensory areas in both hemispheres.
Conclusions:
- Enhanced interhemispheric interactions occur during the early phase of conditioning, likely due to heightened alertness.
- Brain activation patterns shift from bilateral to contralateral with learning.
- Alertness plays a crucial role in modulating sensory processing and interhemispheric communication.
Related Concept Videos
01:05Cerebral Hemispheres
The human brain, a complex organ, is functionally divided into two cerebral hemispheres—left and right. These hemispheres are interconnected by a structure of paramount importance, the corpus callosum. This substantial bundle of neural fibers is not just a bridge between the hemispheres but a crucial element for the brain's comprehensive functioning. It enables efficient communication between the two hemispheres, allowing each side of the brain to control and receive sensory and motor...
01:28Lateralization
Brain lateralization refers to the division of mental processes and functions between the two hemispheres of the brain, a phenomenon that optimizes neural efficiency and underpins complex abilities in humans. This specialization allows each hemisphere to perform tasks where it has a comparative advantage, facilitating more refined cognitive capabilities across different domains.
01:10Higher Mental Functions of the Brain: Language
Language is a system of communication that allows the expression of thoughts, ideas, and feelings. The brain processes language in both hemispheres.
Language formation and comprehension take place in the dominant hemisphere. The dominant hemisphere is responsible for understanding the meaning of spoken, written, or sign language, as well as the ability to communicate. For most people, the left hemisphere is the dominant one. The right hemisphere, then, gives tone and emotional context to the...
Language formation and comprehension take place in the dominant hemisphere. The dominant hemisphere is responsible for understanding the meaning of spoken, written, or sign language, as well as the ability to communicate. For most people, the left hemisphere is the dominant one. The right hemisphere, then, gives tone and emotional context to the...
01:27Language and Cognition
Language serves as a bridge between ideas and communication, influencing how individuals perceive and interact with the world. Psychologists have long debated whether language shapes thought or vice versa. This discussion gained grip with Edward Sapir and Benjamin Lee Whorf in the 1940s, who proposed that language determines thought, a concept known as linguistic determinism. They suggested that the vocabulary and structure of a language influence how its speakers think and perceive reality.
01:22Neurons as Communicators of the Brain
Neurons, the fundamental units of the brain and nervous system, function as the primary transmitters of information throughout the body. Their ability to communicate through electrical and chemical signals is vital for every bodily function, from regulating the heartbeat to processing complex thoughts. Each neuron has three main components: the cell body (soma), dendrites, and an axon, each specialized to facilitate swift and efficient neural communication.
Cell Body
The cell body, also known...
Cell Body
The cell body, also known...
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...