What is the discriminative pathway?

What is the discriminative pathway?

Fine touch (or discriminative touch) is a sensory modality that allows a subject to sense and localize touch. The posterior column–medial lemniscus pathway is the pathway responsible for the sending of fine touch information to the cerebral cortex of the brain.

What is the pathway for a sensory neuron?

Sensory pathways consist of the chain of neurons, from receptor organ to cerebral cortex, that are responsible for the perception of sensations. Somatosensory stimuli activate a chain of neurons starting with the peripheral first-order (1°) afferent and ending in the cerebral cortex (e.g., Figure 4.1).

What are the two pathways the sensory impulse will take?

The dorsal column system (sometimes referred to as the dorsal column–medial lemniscus) and the spinothalamic tract are two major pathways that bring sensory information to the brain (Figure 14.5. 1).

Which of the following is an example of a sensory pathway?

Which of the following is an example of a sensory pathway? The anterior and posterior spinocerebellar tracts are both sensory pathways that convey nerve impulses from the limbs and trunk into the cerebellum. Hence, the correct option is (b), spinocerebellar.

How does sensory information arrive at the brain?

Sensory circuits (sight, touch, hearing, smell, taste) bring information to the nervous system, whereas motor circuits send information to muscles and glands. The simplest circuit is a reflex, in which sensory stimulus directly triggers an immediate motor response.

Which are examples of sensory modality?

The basic sensory modalities include: light, sound, taste, temperature, pressure, and smell.

What are the major characteristics of any sensory modality?

A sensory modality (also called a stimulus modality) is an aspect of a stimulus or what is perceived after a stimulus. The term sensory modality is often used interchangeably with sense. The basic sensory modalities include: light, sound, taste, temperature, pressure, and smell.

What is the function of the somatic sensory pathway?

The somatic senses are senses that have to do with the experience of touch. Somatosensory pathways relay information between the brain and nerves in the skin and organs. Ascending pathways, also called afferent pathways, send somatosensory information from the body up to the brain through a series of afferent nerves.