A term describing mental events (such as thoughts) of which one is temporarily unaware but which can be recalled under the right circumstances.
A state of being partially conscious, or the condition in which mental processes occur and outside objects and events are perceived with the mind nearly or quite unconscious of them. Such subconscious impressions or events may be forgotten at the time but may nevertheless exert a continued in?uence over the conscious mind, or may at a subsequent time come fully into consciousness. Much importance is attached to the in?uence of painful or unpleasant experiences which, although forgotten, continue to in?uence the mind; these may be a factor in the development of anxiety states. This injurious in?uence may be reduced when the subconscious impressions come fully into consciousness and are then remembered and clearly seen in their relative importance.
adj. 1. describing mental processes of which a person is not aware. 2. (in psychoanalysis) denoting the part of the mind that includes memories, motives, and intentions that are momentarily not present in consciousness but can more or less readily be recalled to awareness. Compare unconscious.
A state of UNCONSCIOUSNESS or a description of mental activities of which an individual is unaware. The term is also used in PSYCHOANALYSIS to characterise that section of a person’s mind in which memories and motives reside. They are normally inaccessible, protected by inbuilt mental resistance. This contrasts with the subconscious, where a person’s memories and motives – while temporarily suppressed – can usually be recalled.... unconscious
Grey matter near the base of the cerebral hemispheres, consisting of the corpus striatum (caudate nucleus and lenticular nucleus [globus pallidus and putamen]), claustrum, and amygdaloid nucleus (see BRAIN). The basal ganglia are involved in the subconscious regulation of voluntary movement, and disorders in this region cause DYSKINESIA.... basal ganglion
A description used by psychoanalysts of the subconscious attraction of a child for its parent of the opposite sex. This is accompanied by a wish to get rid of the parent of the same sex. The origin of the phrase lies in the Greek story in which Oedipus kills his father without realising who he is, then marries his mother. It has been suggested that the arrest of psychological development at the Oedipal stage may cause NEUROSIS and sexual dysfunction.... oedipus complex
several large masses of grey matter embedded deep within the white matter of the *cerebrum (see illustration). They include the caudate and lenticular nuclei (together known as the corpus striatum) and the amygdaloid nucleus. The lenticular nucleus consists of the putamen and globus pallidus. The basal ganglia have complex neural connections with both the cerebral cortex and thalamus: they are involved with the regulation of voluntary movements at a subconscious level. Diseases of the basal ganglia cause a range of disorders predominantly affecting movement, the commonest being *parkinsonism.... basal ganglia
The major organ of the nervous system, located in the cranium (skull). The brain receives, sorts, and interprets sensations from the nerves that extend from the central nervous system (brain and spinal cord) to the rest of the body; it initiates and coordinates nerve signals involved in activities such as speech, movement, thought, and emotion.
An adult brain weighs about 1.4 kg and has 3 main structures: the largest part, the cerebrum, consisting of left and right hemispheres; the brainstem; and the cerebellum. Each hemisphere in the
cerebrum has an outer layer called the cortex, consisting of grey matter, which is rich in nerve-cell bodies and is the main region for conscious thought, sensation, and movement. Beneath the cortex are tracts of nerve fibres called white matter, and, deeper within the hemispheres, the basal ganglia. The surface of each hemisphere is divided by fissures (sulci) and folds (gyri) into distinct lobes (occipital, frontal, parietal, and temporal lobes), named after the skull bones that overlie them. A thick band of nerve fibres called the corpus callosum connects the hemispheres.
The cerebrum encloses a central group of structures that includes the thalami and the hypothalamus, which has close connections with the pituitary gland. Encircling the thalami is a complex of nerve centres called the limbic system. These structures act as links between parts of the cerebrum and the brainstem lying beneath the thalami.
The brainstem is concerned mainly with the control of vital functions such as breathing and blood pressure. The cerebellum at the back of the brain controls balance, posture, and muscular coordination. Both of these regions operate at a subconscious level.
The brain and spinal cord are encased in 3 layers of membranes, known as meninges.
Cerebrospinal fluid circulates between the layers and within the 4 main brain cavities called ventricles.
This fluid helps to nourish and cushion the brain.
The brain receives about 20 per cent of the blood from the heart’s output.... brain