Organization by sensory modality in the reticular formation of the rat
| Autor: | S. Walden Miller, M. Virginia Parker, Philip M. Groves, George V. Rebec |
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| Rok vydání: | 1973 |
| Předmět: |
Male
Inferior colliculus Biology Reticular formation Mesencephalon Physical Stimulation medicine Animals Molecular Biology Neurons Trigeminal nerve Brain Mapping Reticular Formation General Neuroscience Superior colliculus Lateral lemniscus Paramedian pontine reticular formation Anatomy Rats medicine.anatomical_structure Acoustic Stimulation Touch Reticular connective tissue Neurology (clinical) Reticular activating system Neuroscience Photic Stimulation Brain Stem Developmental Biology |
| Zdroj: | Brain Research. 54:207-224 |
| ISSN: | 0006-8993 |
| DOI: | 10.1016/0006-8993(73)90045-0 |
| Popis: | The activity of 304 neurons in the reticular formation of the rat, extending from the anterior border of the superior colliculus to the entrance of the eighth cranial nerve, was recorded using extracellular microelectrodes. Approximately one-half of the neurons in our sample did not respond to sensory stimulation (auditory, visual or tactile stimuli), while others responded to visual, auditory or tactile stimuli singly or in various combinations. Cells responding to visual stimulation were located in the anterior mesencephalic reticukar formation, below the superior colliculus. Cells responsive to auditory stimulation were located in the region adjacent to the inferior colliculus and nucleus of the lateral lemniscus, while cells responsive to tactile stimulation were evenly distributed throughout the reticular formation. Receptive fields of tactile cells were quite large. Cells having receptive fields confined to the anterior, middle or posterior third of the body surface were distributed within the reticular formation according to a regional somatotopic organization. Cells responding to the anterior third of the body were located in the anterior reticular formation or the extreme posterior reticular formation at the level of the nucleus of the trigeminal nerve. Cells responding to the middle third of the body surface were located in the posterior mesencephalic and anterior pontine reticular formation, and cells responding to the posterior third of the body were located in the posterior aspect of the reticular formation. Cells responsive to more than one modality were distributed primarily in the mesencephalon. These distributions of sensory responses were discussed in terms of the known anatomical distributions of reticular afferents. |
| Databáze: | OpenAIRE |
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