Related Experiment Video
Updated: Aug 2, 2026
09:22
A Method for Remotely Silencing Neural Activity in Rodents During Discrete Phases of Learning
Published on: June 22, 2015
The second signal system as conceived by Pavlov and his disciples
1Dept. of Psychology, University of North Carolina, Charlotte 28223.
The Pavlovian Journal of Biological Science
|October 1, 1990
Summary
Ivan Pavlov proposed language as a second signal system, distinguishing between concrete reality and abstract concepts. His theories influenced Soviet psychology and neurosis research, though not modern linguistics.
Area of Science:
- Neuroscience
- Linguistics
- Psychology
Background:
- Ivan Pavlov's work on the second signal system (language) emerged in the 1930s, linked to interspecies differences and human neuroses.
- He theorized that conditional reflexes represent concrete reality, while symbolic language offers abstractions.
- Phylogenetic emergence of language in humans was attributed to its survival value.
Discussion:
- Pavlov's disciples, including Orbeli and Krasnogorskiĭ, explored language's ontogenetic development.
- Ivanov-Smolenskiĭ's research extended Pavlov's empirical studies on language function in psychopathology.
- Despite sustained interest, Pavlov did not formulate a conditioning-based theory of language acquisition.
Key Insights:
- Pavlov differentiated between direct sensory perception (conditional reflexes) and abstract thought (language).
- His conceptualization of language, while not original or influential in modern linguistics, was crucial for understanding neuroses within higher nervous activity.
- The theory had significant political implications for Soviet psychology post-WWII.
Outlook:
- Pavlov's ideas on language are primarily of historical significance in neuroscience and psychology.
- Further research could explore the historical impact of his theories on Soviet psychological and political contexts.
- Investigating the evolutionary and neurobiological underpinnings of the second signal system remains a relevant area.
Related Concept Videos
01:30Bacterial Signaling
Bacterial signaling can occur within bacteria (intracellular) or between bacteria (intercellular). At times, a group of bacteria behaves like a community. To achieve this, they engage in quorum sensing, the perception of higher cell density that causes changes in gene expression. Quorum sensing involves both extracellular and intracellular signaling. The signaling cascade starts with a molecule called an autoinducer (AI). Individual bacteria produce AIs that move out of the bacterial cell...
01:31What is a Sensory System?
Sensory systems detect stimuli—such as light and sound waves—and transduce them into neural signals that can be interpreted by the nervous system. In addition to external stimuli detected by the senses, some sensory systems detect internal stimuli—such as the proprioceptors in muscles and tendons that send feedback about limb position.
02:20Milgram's Obedience to Authority
Obedience to authority is classically demonstrated in a more famous series of social psychology experiments performed by Stanley Milgram. He was a social psychology professor at Yale who was influenced by the trial of Adolf Eichmann, a Nazi war criminal. Eichmann’s defense for the atrocities he committed was that he was “just following orders.”
01:28Behaviorism
The field of behaviorism was pioneered by figures such as Ivan Pavlov, John B. Watson, and B.F. Skinner fundamentally shifted the focus of psychology to the observable and controllable aspects of human and animal behavior. This shift marked a critical evolution in the discipline, emphasizing scientific rigor and experimental methodology.
The core premise of behaviorism is its focus on observable behavior rather than internal thoughts or feelings. This approach argues that true scientific...
The core premise of behaviorism is its focus on observable behavior rather than internal thoughts or feelings. This approach argues that true scientific...
01:18Classical Conditioning
Associative learning, a core principle in behavioral psychology, involves forming connections between events and facilitating learned responses. This concept is vividly illustrated by classical conditioning, a process extensively studied by the Russian physiologist Ivan Pavlov. Pavlov's pioneering research on dogs' digestive systems led to the discovery that behaviors can be learned through association, laying the groundwork for classical conditioning.
Ivan Pavlov observed that dogs salivated...
Ivan Pavlov observed that dogs salivated...
01:23Principles of Classical Conditioning
Classical conditioning, as described by Ivan Pavlov, is a foundational concept in associative learning, where a neutral stimulus becomes capable of eliciting a conditioned response through association with an unconditioned stimulus. The process of acquisition, where this learning occurs, and the subsequent phenomena of contiguity, contingency, generalization, discrimination, extinction, and spontaneous recovery are crucial for a comprehensive understanding of classical conditioning.
During the...
During the...