movement /move·ment/ (mldbomacv´ment)
movement(s),
movement
Patient discussion about masticatory mandibular movements.
1. an act of changing position.
2. defecation.
ameboid movement movement like that of an ameba, accomplished by protrusion of cytoplasm of the cell.
associated movement
1. movement of parts which act together, as the eyes.
2. synkinesis.
bowel movement defecation (def. 2).
brownian movement the random zigzag or dancing movement of minute solute particles suspended in a solvent, due to bombardment by rapidly moving solvent molecules.
rapid eye movement (REM) the rapid conjugate movement of the eyes that occurs during REM sleep (see under sleep ).
vermicular movement peristalsis.
move·ment (m v m nt)n. 1. The act or an instance of moving; a change in place or position. 2. An evacuation of the bowels; defecation. |
movement(s),
n a change of place or of position of a body.
movement, Bennett,
n.pr the bodily lateral movement or lateral shift of the mandible resulting from the movements of the condyles along the lateral inclines of the mandibular fossae during lateral jaw movement.
movement, bodily,
n movement of a tooth so that the crown and root apex move the same amount in the same direction, thus maintaining the same axial inclination; opposed to tipping movement.
movement, border,
n an extreme muscular movement limited by bone, ligaments, or other soft tissues.
movement, free mandibular,
n mandibular movement made without tooth interference. An uninhibited movement of the mandible.
movement, hinge,
n an opening or closing movement of the mandible on the hinge axis. A movement around a single axis.
movement, lateral,
n a movement of a body to one side of its established position.
movement, mandibular,
n any movement of the lower jaw.
movement, mandibular gliding,
n side-to-side, protrusive, and intermediate movement of the mandible, occurring when the teeth or other occluding surfaces are in contact.
movement, nonfunctional mandibular,
n movement of the mandible for other than the accepted range of functional movements; i.e., movements dictated by tension, emotion, or aggression. Also, mandibular movements may be misused to hold objects in either indulgent or work habits. These nonfunctional movements may result in a variety of pathologic manifestations.
movement, opening mandibular,
n the movement of the mandible executed during jaw separation.
movement, posterior border,
n a movement of the mandible occurring while the mandible is in its most posterior relation to the maxillae. This movement occurs in the vertical plane from the level of occlusal contact to the level of maximal opening of the jaws.
movement, tipping,
n the movement of a tooth in any direction while its apex remains in almost the original position.
movement, tooth,
n temporary or permanent deviation of a tooth from its normally fixed position in the dental arch. Also, mobility of teeth. When teeth exhibit mobility patterns, movement may be buccolingual, mesiodistal, occlusoapical, or rotational. Movement of teeth into different positions in the dental arch may be produced by repositioning them mesially, distally, buccally, lingually, or occlusally.
movement, translatory,
n the motion of a body at any instant when all points within the body are moving at the same velocity and in the same direction.
movements, functional mandibular,
n all natural, proper, or characteristic movements of the mandible made during speaking, chewing, yawning, swallowing, and other associated movements.
movements, intermediary (intermediate movement),
n all mandibular movements between the extremes of mandibular excursions.
movements, jaw,
n all changes in position of which the mandible is capable.
movements, masticatory mandibular,
n the translatory and rotary movements of the mandible that are used in the course of chewing food.
movement
an act of moving; motion.
movement abnormality
includes involuntary movement, lack of flexion or rigidity, hyper- or hypometric.
active movement
movement produced by the animal's own muscles.
ameboid movement
movement like that of an ameba, accomplished by protrusion of cytoplasm of the cell.
associated movement
movement of parts that act together, such as the eyes.
brownian movement
continuous movement of particles suspended within a liquid.
conjugate movement
two parts moving synchronously in the same direction, e.g. the eyes.
disjunctive movement
two parts moving synchronously but in opposite directions.
involuntary movement
a movement which the animal is unable to prevent.
molecular movement
the peculiar, rapid, oscillatory movement of fine particles suspended in a fluid medium.
passive movement
a movement of the body or of the extremities of an animal performed by a person without voluntary motion on the part of the animal.
purposeful movement
see voluntary movement (below).
vermicular m's
the wormlike movements of the intestines in peristalsis.
voluntary movement
performed out of the will of the animal; an intentional purposeful movement.
movement
1. Change or apparent change in position. 2. The act of moving.
movement after-effect See waterfall after-effect.against m. 1. Apparent movement of an object seen through a lens in a direction opposite to that in which the lens is moved. This occurs when looking through a plus lens. 2. See retinoscope. See with movement.
alpha movement A form of apparent movement perceived when different sizes of an object are presented in an alternating sequence with an interstimulus interval of about 60 ms, the object appears to expand and contract.
apparent movement The perception of movement induced by stationary separated objects, when the objects are presented rapidly on and off, one after another with a brief time interval between the two stimuli. The illusion of apparent movement is generally attributed to the stimulation of motion-sensitive neurons in area MT (V5) of the visual cortex. Examples: alpha movement, beta movement, gamma movement, phi movement, stroboscopic movements. Syn. apparent motion.
autokinetic movement See autokinetic visual illusion.
beta movement A form of apparent movement perceived when two or more separated stationary objects are presented in rapid sequence with an interstimulus interval of between 40 ms and 60 ms, the object appears to move continuously from one position to the other. Beta movement is the basis of smooth, continuous motion perception in cinematography in which frames are commonly presented at a rate of 24 frames per second (or about 42 ms time interval). Syn. optimum movement. See stroboscopic movements.
compensatory eye movement's See static eye reflex.
conjugate eye movement's See version.
cyclofusional eye movement's See cyclofusion.
disjugate eye movement's See disjunctive movements.
disjunctive eye movement's Movements of the two eyes in which the eyes move in opposite directions, as in convergence or divergence. Syn. disconjugate movements; disjugate eye movements. See vergence.
eye movement's The act or process of a change in position of the globe of the eye. See electrooculogram; motor fusion; vestibulo-ocular reflex; vergence; version.
fixation movement's Involuntary movements of the eye occurring when actually fixating an object. Three types of movements have been observed: the drifts, the micronystagmus (tremors) and the saccades (or microsaccades). These movements are too subtle to be seen by direct observation. The drifts are characterized by a small amplitude (1-7 minutes of arc) and a low frequency (2-5 Hz). The micronystagmus movements are characterized by a very small amplitude (5-25 seconds of arc) and a higher frequency (30-100 Hz) and the saccadic movements by a small amplitude (1-20 minutes of arc) and low frequency (0.1-1 Hz). Syn. involuntary eye movements; miniature eye movements; physiological nystagmus (Fig. M13). See saccadic eye movement; stabilized retinal image.
following movement See pursuit movement.
fusional movement See fusional movements.
gamma movement A form of apparent movement that is perceived when a single stimulus is presented in an alternating sequence with an interstimulus interval of about 60 ms under high and low illumination, the object appears to expand and contract.
optimum movement See beta movement.
optokinetic movement See nystagmus.
phi movement Illusion of movement created when one object disappears and an identical object appears in a neighbouring region of the same plane. If the time interval between the two sources is between 0.06 s and 0.2 s, the observer will see an apparent movement of the source, which appears to jump from the first to the second position without the perception of continuity. Hence it is considered as a partial illusion of movement. Some observers also see each source flickering depending on the rate of alternation. The phi phenomenon has been applied to test patients with convergent and divergent strabismus. This is the phi phenomenon test of Verhoeff: two light sources, separated by the angle of strabismus, are placed in front of the patient, as in a major amblyoscope. The two foveas are stimulated with a short time interval between stimulations and patients with normal retinal correspondence do not see a movement whereas those with abnormal retinal correspondence do. Syn. phi phenomenon. See stroboscopic movements; abnormal retinal correspondence; movement threshold.
pursuit movement Movement of an eye fixating a moving object. The fixation can remain locked on the target as long as the movement is smooth and the velocity below about 40º/s. Abnormal pursuit eye movements could be due to ocular motor nerve palsy, cerebellar disease, internuclear ophthalmoplegia, systemic medication, etc. Syn. following movement. See motility test.
rapid eye movement's (REM) Fast eye movements that occur periodically during sleep and are associated with dreaming.
saccadic eye movement A short rapid and abrupt movement of the eye as occurring in reading a line of printed words or in fixating from one point to another. The peak velocity of a saccade of 10º amplitude can exceed 400º/s and be completed in 40 ms. Syn. saccade. See antisaccade; hypermetria; fixation movements; reading.
scissors movement 1. Apparent change in the angle between two lines seen through a rotating astigmatic lens. 2. See retinoscope.
stroboscopic movement's Apparent movements as produced by a stroboscope. If the frequency of stroboscopic illumination is less than the rotation of a moving object it appears to rotate slowly but if the frequency is increased above that of the moving object it appears to rotate slowly in the opposite direction to its real rotation. (If the moving object is rotating at x rotations per second when the frequency is a full multiple of x, one sees the object motionless.) Beta and phi movements are types of stroboscopic movements. See stroboscope.
movement threshold See movement threshold.
torsional movement See torsion.
vergence movement's See disjunctive movements.
with movement 1. Apparent movement of an object seen through a lens in the same direction as that in which the lens is moved. This occurs when looking through a minus lens. 2. See retinoscope. See against movement.
movement after-effect See waterfall after-effect.against m. 1. Apparent movement of an object seen through a lens in a direction opposite to that in which the lens is moved. This occurs when looking through a plus lens. 2. See retinoscope. See with movement.
alpha movement A form of apparent movement perceived when different sizes of an object are presented in an alternating sequence with an interstimulus interval of about 60 ms, the object appears to expand and contract.
apparent movement The perception of movement induced by stationary separated objects, when the objects are presented rapidly on and off, one after another with a brief time interval between the two stimuli. The illusion of apparent movement is generally attributed to the stimulation of motion-sensitive neurons in area MT (V5) of the visual cortex. Examples: alpha movement, beta movement, gamma movement, phi movement, stroboscopic movements. Syn. apparent motion.
autokinetic movement See autokinetic visual illusion.
beta movement A form of apparent movement perceived when two or more separated stationary objects are presented in rapid sequence with an interstimulus interval of between 40 ms and 60 ms, the object appears to move continuously from one position to the other. Beta movement is the basis of smooth, continuous motion perception in cinematography in which frames are commonly presented at a rate of 24 frames per second (or about 42 ms time interval). Syn. optimum movement. See stroboscopic movements.
compensatory eye movement's See static eye reflex.
conjugate eye movement's See version.
cyclofusional eye movement's See cyclofusion.
disjugate eye movement's See disjunctive movements.
disjunctive eye movement's Movements of the two eyes in which the eyes move in opposite directions, as in convergence or divergence. Syn. disconjugate movements; disjugate eye movements. See vergence.
eye movement's The act or process of a change in position of the globe of the eye. See electrooculogram; motor fusion; vestibulo-ocular reflex; vergence; version.
fixation movement's Involuntary movements of the eye occurring when actually fixating an object. Three types of movements have been observed: the drifts, the micronystagmus (tremors) and the saccades (or microsaccades). These movements are too subtle to be seen by direct observation. The drifts are characterized by a small amplitude (1-7 minutes of arc) and a low frequency (2-5 Hz). The micronystagmus movements are characterized by a very small amplitude (5-25 seconds of arc) and a higher frequency (30-100 Hz) and the saccadic movements by a small amplitude (1-20 minutes of arc) and low frequency (0.1-1 Hz). Syn. involuntary eye movements; miniature eye movements; physiological nystagmus (Fig. M13). See saccadic eye movement; stabilized retinal image.
following movement See pursuit movement.
fusional movement See fusional movements.
gamma movement A form of apparent movement that is perceived when a single stimulus is presented in an alternating sequence with an interstimulus interval of about 60 ms under high and low illumination, the object appears to expand and contract.
optimum movement See beta movement.
optokinetic movement See nystagmus.
phi movement Illusion of movement created when one object disappears and an identical object appears in a neighbouring region of the same plane. If the time interval between the two sources is between 0.06 s and 0.2 s, the observer will see an apparent movement of the source, which appears to jump from the first to the second position without the perception of continuity. Hence it is considered as a partial illusion of movement. Some observers also see each source flickering depending on the rate of alternation. The phi phenomenon has been applied to test patients with convergent and divergent strabismus. This is the phi phenomenon test of Verhoeff: two light sources, separated by the angle of strabismus, are placed in front of the patient, as in a major amblyoscope. The two foveas are stimulated with a short time interval between stimulations and patients with normal retinal correspondence do not see a movement whereas those with abnormal retinal correspondence do. Syn. phi phenomenon. See stroboscopic movements; abnormal retinal correspondence; movement threshold.
pursuit movement Movement of an eye fixating a moving object. The fixation can remain locked on the target as long as the movement is smooth and the velocity below about 40º/s. Abnormal pursuit eye movements could be due to ocular motor nerve palsy, cerebellar disease, internuclear ophthalmoplegia, systemic medication, etc. Syn. following movement. See motility test.
rapid eye movement's (REM) Fast eye movements that occur periodically during sleep and are associated with dreaming.
saccadic eye movement A short rapid and abrupt movement of the eye as occurring in reading a line of printed words or in fixating from one point to another. The peak velocity of a saccade of 10º amplitude can exceed 400º/s and be completed in 40 ms. Syn. saccade. See antisaccade; hypermetria; fixation movements; reading.
scissors movement 1. Apparent change in the angle between two lines seen through a rotating astigmatic lens. 2. See retinoscope.
stroboscopic movement's Apparent movements as produced by a stroboscope. If the frequency of stroboscopic illumination is less than the rotation of a moving object it appears to rotate slowly but if the frequency is increased above that of the moving object it appears to rotate slowly in the opposite direction to its real rotation. (If the moving object is rotating at x rotations per second when the frequency is a full multiple of x, one sees the object motionless.) Beta and phi movements are types of stroboscopic movements. See stroboscope.
movement threshold See movement threshold.
torsional movement See torsion.
vergence movement's See disjunctive movements.
with movement 1. Apparent movement of an object seen through a lens in the same direction as that in which the lens is moved. This occurs when looking through a minus lens. 2. See retinoscope. See against movement.
)
Fig. M13 Diagram of the movements of the optical image on the retina produced by the miniature involuntary eye movements of the eye (tremors, drifts and saccades) during fixation of a stationary object for a period of about 10 seconds
movement
Vox populi 1. The act of moving; motion. See Ballistic movement, Circus movement, Closed chain movement, Extraocular movement, Fetal movement, Intraocular movement, Line movement, Paradoxical movement 2. Bowel movement, defecation 3.
A group of similarly minded individuals with an agenda. See Antiabortion movement, Health food movement, Outcomes movement, Popular health movement, Right-to-die movement.
Patient discussion about masticatory mandibular movements.
Q. What is Dyspraxia? My 5 year old son has been diagnosed with Dyspraxia. What is it? Does it have a cure?
A. Dyspraxia usually means that you son will have a hard time to learn and retain physical activities, and will also be hesitant and awkward in their performance. These are some of the symptoms you might notice in him now, before he reaches school age. The child is late in reaching milestones e.g. rolling over, sitting, standing, walking, and speaking. May not be able to run, hop, jump, or catch or kick a ball although their peers can do so, has difficulty in keeping friends; or judging how to behave in company. Has little understanding of concepts such as 'in', 'on', 'in front of' etc. Has difficulty in walking up and down stairs. Poor at dressing. Slow and hesitant in most actions. Appears not to be able to learn anything instinctively but must be taught skills. Falls over frequently. Poor pencil grip. Cannot do jigsaws or shape sorting games. Artwork is very immature. There is no cure for Dyspraxia, however your son can be taught to do everything by the appropriate specialists.
Q. Can pregnancy cause an increase in bowel movements? After very long years now I am 7 wks pregnant with my first child and I have noticed that I'm having more frequent bowel movements during this pregnancy. They are neither loose nor hard out of the ordinary. My husband is little bit afraid of what’s happening with me. I too fear of it. I don’t want to loose him. Has anyone else experienced this, and is this normal? Can pregnancy cause an increase in bowel movements?
A. It is nothing to worry maria. It’s a usual happening during pregnancy. Here I am 13 weeks pregnant with my second child and I too experience frequent bowel movements (2-4/day). It feels as if I am not gaining any weight b/c everything that goes in goes right out. I know this is okay. Here we can get an expert's opinion on this. So don’t worry and comfort your loving and caring husband. My best wishes for your healthy first baby.
Q. If the baby movement is quick, will it be harmful …..? Hi to all here…….I am 24 and 3 week pregnant. I am so happy because pregnancy is vital in every women’s life. I am curious to know when I could feel the baby movement and how it will be. If the baby movement is quick, will it be harmful …..?
A. Congrats! I am glad to note that you are enjoying pregnancy which many are not. I hope you would get a happy child too. It is around and after 4th month you could feel the baby movement. My baby moved in 4th month end and now I am carrying second one and I felt it at the start of 4thmonth. Initially you could feel the small force applied by the baby. It won’t be frequent now but after 26 weeks the movement will become frequent and is a good sign. If there is no movement you need to be cautious and consult the doctor immedieately without any delay as it may be an alarming sign of any defect. I felt the movement after having food and my baby also kicked me a lot during those times . It made to think that that I am nourishing someone inside, my cute little angel!. It’s a very pleasant experience; you will feel it and wait till your 4 month.
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