Definition

1. Noun:
   • A neuroanatomical structure: In neuroanatomy, the putamen is a round structure located in the forebrain. It is a major component of the basal ganglia, a group of nuclei important for motor control, procedural learning, and other functions.
   • A specific part of the lentiform nucleus: The putamen is the larger, outer, and reddish-gray portion of the lentiform (or lenticular) nucleus. The smaller, inner part is the globus pallidus.

Examples of Usage

• Noun:
  • The putamen, along with the caudate nucleus, forms the dorsal striatum.
  • Degeneration of cells in the putamen is associated with certain movement disorders.
  • The MRI scan showed a lesion in the right putamen.

Advanced Usage

• In scientific literature: The term is used precisely in neuroscience, neurology, and neuropsychology contexts to describe anatomy, function, or pathology.
  • The study focused on dopamine receptor density in the human putamen.

Variants and Related Words

• Lentiform nucleus / Lenticular nucleus: The combined structure consisting of the putamen and the globus pallidus.
• Striatum: A major structure of the basal ganglia, comprising the caudate nucleus and the putamen.
• Basal ganglia: The group of subcortical nuclei that includes the putamen, caudate nucleus, globus pallidus, substantia nigra, and subthalamic nucleus.

Synonyms

• Dorsal striatum (in part): When combined with the caudate nucleus.
• Neostriatum: An older term sometimes used synonymously with the striatum (caudate + putamen).

Notes on Different Meanings

• Botanical Meaning: In botanical contexts, "putamen" (plural: ) refers to the hard, stony endocarp (shell) of a drupe, such as the pit of a peach or cherry. This is a distinct, specialized meaning from a different field of study.
  • The putamen of the peach must be removed before processing.

Noun

1. the outer reddish part of the lenticular nucleus