CAJ | 학술논문

采用"双选"的心理物理学方法,研究了训练后的大棕蝠(Eptesicus fuscus)在背景干扰的条件下探测半圆形目标的能力.半圆形目标系以静止、旋转、摆动或不同组合的旋转与摆动呈现于蝙蝠.在测试室,蝙蝠-目标间距从30 cm开始,依次递增10 cm直至110 cm为止.当蝙蝠-目标间距小于80 cm时,目标回声的强度总是大于背景干扰声.由旋转目标反射的回声强度则依正弦波调制.结果发现:蝙蝠对目标的正确探测率随蝙蝠-目标间距的增加而降低;在每一特定间距,对移动目标的正确探测率均高于对静止目标的正确探测率.
채용"쌍선"적심리물이학방법,연구료훈련후적대종복(Eptesicus fuscus)재배경간우적조건하탐측반원형목표적능력.반원형목표계이정지、선전、파동혹불동조합적선전여파동정현우편복.재측시실,편복-목표간거종30 cm개시,의차체증10 cm직지110 cm위지.당편복-목표간거소우80 cm시,목표회성적강도총시대우배경간우성.유선전목표반사적회성강도칙의정현파조제.결과발현:편복대목표적정학탐측솔수편복-목표간거적증가이강저;재매일특정간거,대이동목표적정학탐측솔균고우대정지목표적정학탐측솔.
Using a two-choice psychophysical procedure, we studied the detection of a semicircular target under background noise interference by trained Eptesicus fuscus. The target was presented under conditions of either stationary, revolving, oscillating or different combinations of oscillation and revolution at a bat-to-target distance of 10 cm increments from 30 to 110 cm inside a test chamber. During the test, the amplitude of the target echo was always larger than that of the background noise at a bat-to-target distance up to 80 cm. The echo amplitude from a revolving target was sinusoidally modulated between a maximal and minimal value. The percent correct response of target detection by these bats decreased with increasing bat-to-target distance. However, the percent correct response was always higher for a moving target than for a stationary one at each bat-to-target distance tested .