Role of the lateral and medial hypothalamus in the reproduction of the motoric reaction which is a signal during the development of classical conditioned reflexes

• Published in: Neuroscience and behavioral physiology 1992-01, Vol.22 (1), p.17-25
• Main Authors: Davydova, E K, Grigor'yan, G A
• Format: Article
• Language: English
• Subjects: Aggression - physiology; Animals; Conditioning, Classical - physiology; Digestive System Physiological Phenomena; Dogs; Electric Stimulation; Electrodes, Implanted; Hypothalamic Area, Lateral - physiology; Hypothalamus, Middle - physiology; Motor Cortex - physiology; Motor Neurons - physiology; Photic Stimulation
• ISSN: 0097-0549; 1573-899X
• DOI: 10.1007/BF01186663

It has been demonstrated in experiments on three dogs that test electrostimulation of the lateral hypothalamus reproduces the motoric reaction which is the signal stimulus during the development of classical alimentary CR (83%) and does not reproduce it during the development of classical defensive CR (93%). The test electrostimulation of the medial divisions of the hypothalamus, like the electrostimulation of the LH, reproduces the "signal" motoric reaction, but in a smaller percent of cases (62%), during the development of classical alimentary CR, and does not reproduce it during the development of classical defensive CR. The reproduction of the signal motoric reaction during the electrostimulation of the LH is associated with the activation of a backward conditioned connection from the motivational structures of the hypothalamus to the representation of the signal stimulus in the motor cortex.