In perceptual extinction, neglect patients:

Question

BlackTom AI · Accepted Answer

Question under consideration: In perceptual extinction, neglect patients:
Option 1: Show impairment in responding to two weak, near-threshold visual stimuli. This is not the typical description of perceptual extinction. Extinction concerns failure to perceive the contralesional stimulus when a competing stimulus is present on the ipsilesional side, rather than a general deficit to two weak stimuli across the field. So this option misstates the bilateral stimulus interaction and the typical salience considerations.
Option 2: Show impairment in responding to two strong stimuli. This aligns with the idea that extinction emerges when two stimuli are presented simultaneously on opposite sides; the contralesional stimulus may be impaired to report despite being perceptible when presented alone, especially under conditions of attention competition. By emphasizing simultaneous bilateral strong stimuli, this option captures the core phenomenon described in extinction literature, where the presence of a bilateral stimulus pair reveals the lesion through failure to report the contralesional item.
Option 3: Show impairment in responding to a weak stimulus presented in the left visual field. This describes a unilateral deficit rather than extinction, which requires competition between stimuli across hemispheres. A single left-field weak stimulus does not invoke the extinction mechanism, since there is no competing ipsilesional stimulus to suppress awareness of the contralesional item.
Option 4: Show impairment in responding to a strong stimulus presented in the right visual field. This is also a unilateral deficit description and does not address the bilateral-stimulus competition central to extinction. Extinction hinges on the interaction between a left (contralesional) and a right (ipsilesional) stimulus, not on a single-field unilateral strong stimulus.
In summary, extinction is best characterized by the interplay of bilateral stimulation leading to failure to report the contralesional item when both stimuli are presented together, which is most consistent with option 2 in this set.

PSYC20007_2025_SM2 Week 8: Object-Based Attention & the Cognitive Neuropsychology of Attention

In perceptual extinction, neglect patients:

View Explanation

Log in for full answers

Similar Questions

In a consumer society, many adults channel creativity into buying things

Economic stress and unpredictable times have resulted in a booming industry for self-help products

People born without creativity never can develop it

A product has a selling price of $20, a contribution margin ratio of 40% and fixed cost of $120,000. To make a profit of $30,000. The number of units that must be sold is: Type the number without $ and a comma. Eg: 20000

Which of the following statement regarding cost is correct:

Under the assumptions used in cost-volume-profit analysis, as the activity increases:

The CVP and break-even analysis are supported by a range of important assumptions. Which of the following is not an assumption of the CVP:

The break-even point is that at which:

More Practical Tools for Students Powered by AI Study Helper

Homework AI Solver

Stylized AI Paper Writer

Plagiarism Checker Assistant

Citation AI Academic Writing Tool

In-Class Translation Assistant

AI Note Generator

AI Quiz Answers

Past Exam Questions from University Test Bank

Smart Practice Assistant

Adaptive Practice

Making Your Study Simpler