Word Finder - stimuli

definition

Any external phenomenon that has an influence on a system, by triggering or modifying an internal phenomenon.

example

an economic stimulus

definition

Something external that elicits or influences a physiological or psychological activity or response.

definition

Anything effectively impinging upon any of the sensory apparatuses of a living organism, including physical phenomena both internal and external to the body.

definition

Anything that induces a person to take action.

In point of fact, many stimuli are beneath the " threshold " of a man's consciousness.

The threshold-value of the stimuli adequate for the various senses may be extraordinarily lowered.

By the rules of induction from concomitant variations, we are logically bound to infer the realistic conclusion that outer physical stimuli cause inner sensations of sensible effects.

Breath holding spells are episodes of brief, involuntary cessations of breathing that occur in children in response to stimuli such as anger, frustration, fear, or injury.

They are the power Of receiving impressions or stimuli from the exterior, and of communicating with each other, with the view of co-ordinating a suitable response.

Most children with these disorders seem to have a biological vulnerability to stress, making them more susceptible to environmental stimuli than the rest of the population.

By means of vibrations or shocks transmitted through the - Sub water, or by displacements in the balance or position of the animal, the otoliths are caused to impinge against the bristles of the sensory cells, now on one side, now on the other, causing shocks or stimuli which are transmitted by the basal nerve-fibre to the central nervous system.

It is easy to realize how such a rhythm can be modified by the reception of stimuli, and can consequently serve as the basis for the movement of the stimulated organ.

The second is Fechner's method; it consists of recording the changes in feeling-tone produced in a subject by bringing him in contact with a series of conditions, objects or stimuli graduated according to a scientific plan and presented singly in pairs or in groups.

Stimuli applied generally, not unilaterally, in most cases induce increased divisibility of the cells of the part.

Among stimuli acting unilaterally, perhaps none has proved more interesting, in late times, than what is known as Chemiotaxis.

One end of the body, through contact, during locomotion, with fresh tracts of medium and other forms of stimuli, has become more specialized than the rest, and here the nervous system and sense-organs are more densely aggregated than elsewhere, forming a means of controlling locomotion and of correlating the activities of the inner organs with the varying stimuli that impinge upon the body.

His definitely expressed view was that psychical activity is " nothing but a radiation through the cells of the grey substance of the brain of a motion set up by external stimuli."

From antiquity men had applied themselves to determine the relations between the physical stimuli and the socalled " quality " of sensations.

But what was new was the application of this doctrine to the relations between the stimuli and the socalled " intensity " of sensations.

He agrees with Fechner that physical process of nerve and psychical process of mind are really the same psychophysical process as appearing on the one hand to an observer and on the other hand to one's own consciousness; and that physical phenomena only produce physical phenomena, so that those materialists and realists are wrong who say that physical stimuli produce sensations.

He accepts Fechner's extension of Weber's law of the external stimuli of sense, while judiciously remarking that " the physiological interpretation is entirely hypothetical."

Certain it is that in the course of the waking day a great number of stimuli play on the sense organs, and through these produce disintegration of the living molecules of the central nervous system.

The long-continued incitement to catabolism of the waking day thus of itself predisposes the nerve cells towards rebound into the opposite phase; the increased catabolism due to the day's stimuli induces increase of anabolism, and though recuperation goes on to a large extent during the day itself, the recuperative process is slower than, and lags behind, the disintegrative.

This theory of complementary colours as due to the polarity in the qualitative action of the retina is followed by some criticism of Newton and the seven colours, by an attempt to explain some facts noted by Goethe, and by some reference to the external stimuli which cause colour.

On the contrary, a belief that conduct necessarily results upon the presence of certain motives, and that upon the application of certain incentives, whether of pain or pleasure, upon the presence of certain stimuli whether in the shape of rewards or punishments, actions of a certain character will necessarily ensue, would seem to vindicate the rationality of ordinary penal legislation, if its aim be deterrent or reformatory, to a far greater extent than is possible upon the libertarian hypothesis.

All four types of stimuli activated the superior temporal gyrus.

Though stimuli are composite, sensations are not.

We are attempting to identify which areas of the brain are greatly affected by aversive stimuli.

Many children do well on the auditory word discrimination subtest of TAPS, which uses auditory stimuli, but perform poorly on the G-F-W Test of Auditory Discrimination, which uses visual stimuli.

It is not capable of responding to stimuli in its environment.

Stimuli that may provoke a reaction include surgery, especially gastrointestinal surgery; a change to a low fat diet, which includes an increased number of wheat-based foods; severe emotional stress; or a viral infection.

This standardized test scores responses to 33 specific neurological stimuli to estimate the infant's neural development.

Dubowitz exam-Standardized test that scores responses to 33 specific neurological stimuli to estimate an infant's neural development and, hence, gestational age.

Remember that autistic children may be hypersensitive to certain sensory stimuli.

The first step for you may be considering your creativity as a thing that needs to be nurtured and given appropriate stimuli.

It is evident in the body's response to threats and potentially harmful stimuli.

This bending part has been proved to be insensitive to the stimuli.

It cannot then be excited to contract by any agent, though the inexcitable period is more brief for strong than for weak stimuli.

The axons of the motor neurons are, inasmuch as they are nerve fibres in nerve trunks, easily accessible to artificial stimuli.

Heidenhain's view is that the cortical centres of the hemisphere are inhibited by peculiar conditions attaching to the initiatory sense stimuli.

Stimuli that activate the immune system and lead to the induction of strong immune responses are called adjuvants.

I am currently using grating and plaid stimuli to investigate the spatial frequency tuning of the motion aftereffect.

Consistent with neuropsychological findings, both types of fearful stimuli activated the amygdala.

Animal and human studies implicate the amygdala in conditioning to aversive stimuli and orbitofrontal cortex in reversal learning.

Airway response to stimuli There are three phases to the asthmatic response of an atopic asthmatic following exposure to an allergen.

In order to resolve stimulus equivalence, stimuli can be combined into classes whenever a unique behavior is required.

The transduction of mechanical stimuli into afferent neuronal firing is still poorly understood.

We have a large collection of mouse mutants with well-characterised auditory defects but only a superficial study of their physiological responses to various stimuli.

So it can act as an area that produces a warning mechanism for potentially noxious stimuli.

I also think business people are far too parochial in their intake of stimuli that could help them innovate.

Sensitivity to stimuli of first and second order motion was measured, using a two alternative forced choice preferential looking procedure.

Physical, visual and auditory stimuli can have powerful subconscious learning effects.

There is, however, very great delicacy of perception or appreciation on the part of the sense organ, stimuli being responded to which are quite incapable of impressing themselves upon the most highly differentiated animal.

Special Cell-Modifications for the Reception of Stimuli.In studying the physiology of movement in plants certain modifications of cell-structure have been observed which appear to have been developed for the reception of the stimuli by which the response to light, gravity and contact are brought about.